Smart Money · Holder IQ
84.7 / 100
Above median holder quality (percentile 99.1 this quarter). Tracked high-scoring holders are adding shares.
ATRA
Atara Biotherapeutics IncNASDAQ
$7.93-3.65%
Close Nov 12, 2026
Reading stored signals…
Healthcare • Biotechnology
Factor tilt: Micro-Cap Growth
People-network credibilityUncalibrated
No reporting owner has a RED or GREEN connection distinguishable from zero in this publication.
Show all 12 reporting owners
- Brian N. CherryDirector — as filedRED 0 · GREEN 0 · Net 0
- Gregory Austin CiongoliDirector · 10% reporting owner · Other reporting role — as filedRED 0 · GREEN 0 · Net 0
- Matthew K. FustDirector — as filedRED 0 · GREEN 0 · Net 0
- Yanina Grant-HuertaChief Accounting Officer — as filedRED 0 · GREEN 0 · Net 0
- Jeremy GreenDirector — as filedRED 0 · GREEN 0 · Net 0
- William K. HeidenDirector — as filedRED 0.000001 · GREEN 0 · Net -0.000001
- James HuangDirector · 10% reporting owner — as filedRED 0 · GREEN 0 · Net 0
- AnhCo NguyenPresident and CEO · Director — as filedRED 0 · GREEN 0 · Net 0
- Redmile Group, LLCDirector — as filedRED 0 · GREEN 0 · Net 0
- Kevin G. SarneyInterim CFO — as filedRED 0 · GREEN 0 · Net 0
- EcoR1 Capital, LLC10% reporting owner — as filedRED 0 · GREEN 0 · Net 0
- Panacea Innovation Ltd10% reporting owner — as filedRED 0 · GREEN 0 · Net 0
How this is measured
A connection is distinguishable from zero here only when its RED or GREEN published interval has a lower bound above zero. A person with an admitted finding is always listed first, even with a zero score. Connections are then ordered by the larger of RED and GREEN. A zero tied with other owners is not given a percentile.
RED measures graph connections to people with admitted adjudications; GREEN measures connections to repeat value creators and stewards of qualifying compounders and long-term shareholder-return leaders. Net is GREEN minus RED on a −1 to 1 scale, not a probability or expected return. Connections alone do not establish conduct. These measures are separate from insider trading performance and Company Quality Grade.
The publication is uncalibrated. Its intervals are published bands, not a claim of calibrated confidence or a tested forecast.
Admitted findings are published guilty pleas, convictions and litigated SEC judgments or orders. Settlements and open cases are not findings. A positive net does not erase an admitted finding. Absence of a finding is not a clearance or a complete regulatory-history search.
Reporting owners who filed from after Oct 9, 2025 through Oct 9, 2026: a 12-month window ending at the publication date. This can include former officers and directors; it is not a verified roster of today's employees.
Link an account to see your stake, watchlist and past holdings. use the cited filings to check the reported role and evidence alongside your investment thesis. A connection alone does not tell you to increase or reduce a holding.
Medians across all 12 scored reporting owners at this company as of Oct 9, 2026: RED 0, GREEN 0, net 0. Highest RED: 0.000001; highest GREEN: 0.
- Issuer CIK
- 0001604464
- Publication as of
- Oct 9, 2026; known by Oct 9, 2026
- Retrieved
- Nov 13, 2026; a new publication can take up to six hours to appear here
- RED source refresh state
- fresh within 8d
- Method
- epg.signed_credibility.raw-uncalibrated.v1
- Population identity
- sha256:733e7e30f755f296f1d478ccb2c8674cb0adf04ebbe89319e08bc8255dddb9c5
- Graph identity
- c6521b138848011b775d9a6dfb7ac59989b2082fdc729ef4f41456a4e2037f60
- Source
- SEC Forms 3, 4 and 5 for roles; the Midas Edge API's active immutable people-network publication for credibility and admitted findings. GREEN seed evidence can include vendor price histories. No portfolio or account data is sent to this product.
Brian N. Cherry · SEC CIK 0001290922
Read the Form 4 filed Sep 4, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: d8d4ff307ea7e72ee466a0143c1f926263fea3d5072cb7c4e758376e9f784d89
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Gregory Austin Ciongoli · SEC CIK 0002023732
Read the Form 4 filed Jun 11, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: fb2ddf899ec61b90a008610f06b5a5cbb6118120bab7c40a7a47180bc35a0567
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Matthew K. Fust · SEC CIK 0001397266
Read the Form 4 filed Jun 11, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 960df90c9322cf3796967f3deaaa767100de8685a0aff44d3444e33ad06ab59d
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Yanina Grant-Huerta · SEC CIK 0002064348
Read the Form 4 filed May 20, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 4b3532e4eb6fb67a45433a6fe435e5bdce252685d1b6c951af5abb50365fa2c9
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Jeremy Green · SEC CIK 0001650527
Read the Form 4 filed Jul 24, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 6c834d0965bd653cf3f40059e2ee9b495ec8384a8ce8bed99421c067fa0c235f
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
William K. Heiden · SEC CIK 0001214939
Read the Form 4 filed Jun 11, 2026Published intervals: RED 0 to 0.020001; GREEN 0 to 0.02; net -0.040001 to 0.039999.
Score identity: 524874bd1e8f0bb06ffc35748d9c9b9836002feda96ebcfe876a56eaf8340447
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
James Huang · SEC CIK 0001573160
Read the Form 4 filed May 11, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 67c335b203bb29b92401d2735437518f07ea2c0d1bb64aeea47ee249763a0a0e
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
AnhCo Nguyen · SEC CIK 0001977970
Read the Form 4 filed Aug 26, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 3ad6649753ee896fb084c0135dcf69bea82de4dc4271e361d1472688b650c689
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Redmile Group, LLC · SEC CIK 0001425738
Read the Form 4 filed Jul 24, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 168163f9379f75ec939fc6295eedb3c6fc3ec85c94ffd1f7e56c43f6c8e566cf
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Kevin G. Sarney · SEC CIK 0001431136
Read the Form 3 filed Jul 6, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: 723c8108c89129312c5a15fcc2fe96f76cc9c955cde5e57579cdcb9354e99139
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
EcoR1 Capital, LLC · SEC CIK 0001587114
Read the Form 4 filed May 11, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: b810df9fbf65d8aceea9562fcbec2ec6316586c1d16983332343986417583f49
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Panacea Innovation Ltd · SEC CIK 0002010692
Read the Form 4 filed May 11, 2026Published intervals: RED 0 to 0.02; GREEN 0 to 0.02; net -0.04 to 0.04.
Score identity: bfb67bd0d138be71b213028c7bd1b0e0414844254edfc1665b82c9bd8ff75e58
Calibration versions: RED affine-identity-unfitted.v1; GREEN affine-identity-unfitted.v1
Read the insider context evidence
What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
Stored recent-activity label: neutral. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
- Market cap
- $71.45M
- 1 month
- -17.1%
- 3 months
- -2.0%
- 1 year
- -36.9%
- 52-week range
- $4.18$18.09
More market facts
- Dividend
- No dividends on record
- Short interest
- 6.4% of float296.7K shares · settled Oct 30, 2026 · -15.3% since Oct 15, 2026 · FINRA
Fundamentals · trailing 12 months to Jun 30, 2026
- Revenue
- $6.19M
- Net income
- -$16.69M
- Free cash flow
- -$21.9M
- Book value
- —
- Total debt
- $9.88M
- P/E
- —
- Price / sales
- 11.5×
- Price / book
- —
- FCF yield
- -30.6%
- Net margin
- -269.4%
Trailing twelve-month statements · as of Nov 12, 2026
End-of-day close from stored market data, not a live quote.
About Atara Biotherapeutics Inc
Atara Biotherapeutics, Inc. engages in the development of transformative therapies for patients with cancer and autoimmune disease in the United States and internationally.
Read more
Its lead product includes Tab-cel (tabelecleucel), a T-cell immunotherapy program that is in Phase 3 clinical trials for the treatment of epstein-barr virus (EBV) with post-transplant lymphoproliferative disease, as well as other EBV-driven diseases. It also develops ATA3219, an allogeneic CAR T targeting CD19 intended to target B-cell malignancies and autoimmune diseases. The company has research collaboration agreements with Memorial Sloan Kettering Cancer Center, and Council of the Queensland Institute of Medical Research. Atara Biotherapeutics, Inc. was incorporated in 2012 and is headquartered in Thousand Oaks, California.
- Website
- atarabio.com
- Headquarters
- Thousand Oaks, CA, United States
- Employees
- 10
- Listed
- Oct 16, 2014
- Fiscal year ends
- December
Company profile stored Oct 28, 2026.
Quarterly results
The last 8 fiscal quarters from the latest stored normalized financial statements. These may include restatements. Year over year compares the same quarter a year earlier.
| Quarter | Revenue | YoY | Gross margin | Op. income | Net income |
|---|---|---|---|---|---|
| Jun 2026filed Aug 12, 2026 | $630.0K | -96.4% | 69.7% | -$4.7M | -$4.8M |
| Mar 2026filed May 12, 2026 | $516.0K | -99.5% | 76.0% | -$3.4M | -$4.1M |
| Dec 2025filed Mar 16, 2026 | $1.6M | -95.1% | 93.5% | -$2.6M | -$3.4M |
| Sep 2025filed Nov 12, 2025 | $3.5M | -91.4% | 96.7% | -$3.6M | -$4.3M |
| Jun 2025filed Aug 11, 2025 | $17.6M | -38.6% | 96.8% | $3.2M | $2.4M |
| Mar 2025filed May 15, 2025 | $98.1M | +258.8% | 79.2% | $38.8M | $38.0M |
| Dec 2024filed Mar 7, 2025 | $32.8M | +670.3% | 79.3% | -$12.2M | -$12.7M |
| Sep 2024filed Nov 12, 2024 | $40.2M | +1,779.8% | 81.1% | -$21.8M | -$21.9M |
Balance sheet · cash, debt and near-term obligations
What resources sit beside the obligations? These are balances at each fiscal quarter end, not cash earned during the quarter. Amounts are in USD, the reporting currency.
As of
- Reported cash
- $3.2M
- Reported total debt
- $9.9M
- Current assets
- $13.5M
- Current liabilities
- $6.8M
Vendor filing date:
As of
- Reported cash
- $8.4M
- Reported total debt
- $10.1M
- Current assets
- $12.2M
- Current liabilities
- $5.6M
Vendor filing date:
As of
- Reported cash
- $8.5M
- Reported total debt
- $52.8M
- Current assets
- $12.2M
- Current liabilities
- $14.9M
Vendor filing date:
As of
- Reported cash
- $5.7M
- Reported total debt
- $58.6M
- Current assets
- $18.4M
- Current liabilities
- $18.1M
Vendor filing date:
Link an account to see your stake, watchlist and past holdings. Compare cash and debt across dates when reviewing its reliance on financing. Current assets can include receivables and inventory; current liabilities include bills as well as borrowings. They are not all spendable cash or all debt. These figures alone do not establish the ability to repay.
Source: the latest stored normalized balance sheets, matched to the same security and fiscal end as these income periods. They may include restatements and are not an originally-filed or knowledge-time history. No net debt, coverage ratio or replacement balance is calculated. Read the SEC guide to financial statements for the distinction between balances and cash flows.
Short-interest history
Reported short positions, stored float percentages and adjusted prices over the same period.
Shares short
Share of float
Adjusted close · USD
Settlement records · 137 observations
Settlement Oct 30, 2026
296,651 shares short
-53,609 shares (-15.3%) vs Oct 15, 2026
6.4% of the stored float. Published Nov 10, 2026.
Settlement Oct 15, 2026
350,260 shares short
+28,468 shares (+8.8%) vs Sep 30, 2026
7.6% of the stored float. Published Oct 26, 2026.
Settlement Sep 30, 2026
321,792 shares short
-82,478 shares (-20.4%) vs Sep 15, 2026
7% of the stored float. Published Oct 9, 2026.
Settlement Sep 15, 2026
404,270 shares short
-23,165 shares (-5.4%) vs Aug 31, 2026
Published Sep 24, 2026.
Settlement Aug 31, 2026
427,435 shares short
-49,833 shares (-10.4%) vs Aug 14, 2026
Published Sep 10, 2026.
Settlement Aug 14, 2026
477,268 shares short
-59,629 shares (-11.1%) vs Jul 31, 2026
Published Aug 25, 2026.
Settlement Jul 31, 2026
536,897 shares short
-40,738 shares (-7.1%) vs Jul 15, 2026
Published Aug 11, 2026.
Settlement Jul 15, 2026
577,635 shares short
+216,115 shares (+59.8%) vs Jun 30, 2026
Published Jul 24, 2026.
Settlement Jun 30, 2026
361,520 shares short
-130,885 shares (-26.6%) vs Jun 15, 2026
Published Jul 10, 2026.
Settlement Jun 15, 2026
492,405 shares short
+8,014 shares (+1.7%) vs May 29, 2026
Published Jun 25, 2026.
Settlement May 29, 2026
484,391 shares short
-62,079 shares (-11.4%) vs May 15, 2026
Published Jun 9, 2026.
Settlement May 15, 2026
546,470 shares short
+240,377 shares (+78.5%) vs Apr 30, 2026
Published May 27, 2026.
Settlement Apr 30, 2026
306,093 shares short
-11,860 shares (-3.7%) vs Apr 15, 2026
6.5% of the stored float. Published May 11, 2026.
Settlement Apr 15, 2026
317,953 shares short
-9,113 shares (-2.8%) vs Mar 31, 2026
6.7% of the stored float. Published Apr 24, 2026.
Settlement Mar 31, 2026
327,066 shares short
+13,776 shares (+4.4%) vs Mar 13, 2026
6.9% of the stored float. Published Apr 10, 2026.
Settlement Mar 13, 2026
313,290 shares short
-17,234 shares (-5.2%) vs Feb 27, 2026
6.6% of the stored float. Published Mar 24, 2026.
Settlement Feb 27, 2026
330,524 shares short
+121,237 shares (+57.9%) vs Feb 13, 2026
7% of the stored float. Published Mar 10, 2026.
Settlement Feb 13, 2026
209,287 shares short
-73,238 shares (-25.9%) vs Jan 30, 2026
4.4% of the stored float. Published Feb 25, 2026.
Settlement Jan 30, 2026
282,525 shares short
-734,091 shares (-72.2%) vs Jan 15, 2026
6% of the stored float. Published Feb 10, 2026.
Settlement Jan 15, 2026
1,016,616 shares short
+847,415 shares (+500.8%) vs Dec 31, 2025
21.5% of the stored float. Published Jan 27, 2026.
Settlement Dec 31, 2025
169,201 shares short
+2,345 shares (+1.4%) vs Dec 15, 2025
3.6% of the stored float. Published Jan 12, 2026.
Settlement Dec 15, 2025
166,856 shares short
+2,143 shares (+1.3%) vs Nov 28, 2025
3.5% of the stored float. Published Dec 24, 2025.
Settlement Nov 28, 2025
164,713 shares short
-12,064 shares (-6.8%) vs Nov 14, 2025
3.5% of the stored float. Published Dec 9, 2025.
Settlement Nov 14, 2025
176,777 shares short
+8,228 shares (+4.9%) vs Oct 31, 2025
3.7% of the stored float. Published Nov 25, 2025.
Settlement Oct 31, 2025
168,549 shares short
+39,700 shares (+30.8%) vs Oct 15, 2025
3.6% of the stored float. Published Nov 11, 2025.
Settlement Oct 15, 2025
128,849 shares short
-20,741 shares (-13.9%) vs Sep 30, 2025
2.7% of the stored float. Published Oct 24, 2025.
Settlement Sep 30, 2025
149,590 shares short
-11,917 shares (-7.4%) vs Sep 15, 2025
3.2% of the stored float. Published Oct 9, 2025.
Settlement Sep 15, 2025
161,507 shares short
-12,318 shares (-7.1%) vs Aug 29, 2025
3.4% of the stored float. Published Sep 24, 2025.
Settlement Aug 29, 2025
173,825 shares short
-22,390 shares (-11.4%) vs Aug 15, 2025
3.7% of the stored float. Published Sep 10, 2025.
Settlement Aug 15, 2025
196,215 shares short
-14,426 shares (-6.8%) vs Jul 31, 2025
4.1% of the stored float. Published Aug 26, 2025.
Settlement Jul 31, 2025
210,641 shares short
-57,395 shares (-21.4%) vs Jul 15, 2025
4.4% of the stored float. Published Aug 11, 2025.
Settlement Jul 15, 2025
268,036 shares short
+1,389 shares (+0.5%) vs Jun 30, 2025
5.7% of the stored float. Published Jul 24, 2025.
Settlement Jun 30, 2025
266,647 shares short
-19,127 shares (-6.7%) vs Jun 13, 2025
5.6% of the stored float. Published Jul 10, 2025.
Settlement Jun 13, 2025
285,774 shares short
-81,631 shares (-22.2%) vs May 30, 2025
6% of the stored float. Published Jun 25, 2025.
Settlement May 30, 2025
367,405 shares short
-45,452 shares (-11%) vs May 15, 2025
7.8% of the stored float. Published Jun 10, 2025.
Settlement May 15, 2025
412,857 shares short
-109,282 shares (-20.9%) vs Apr 30, 2025
8.7% of the stored float. Published May 27, 2025.
Settlement Apr 30, 2025
522,139 shares short
-140,049 shares (-21.1%) vs Apr 15, 2025
11% of the stored float. Published May 9, 2025.
Settlement Apr 15, 2025
662,188 shares short
-4,597 shares (-0.7%) vs Mar 31, 2025
14% of the stored float. Published Apr 25, 2025.
Settlement Mar 31, 2025
666,785 shares short
-56,479 shares (-7.8%) vs Mar 14, 2025
14.1% of the stored float. Published Apr 9, 2025.
Settlement Mar 14, 2025
723,264 shares short
+8,180 shares (+1.1%) vs Feb 28, 2025
15.3% of the stored float. Published Mar 25, 2025.
Settlement Feb 28, 2025
715,084 shares short
+40,456 shares (+6%) vs Feb 14, 2025
15.1% of the stored float. Published Mar 11, 2025.
Settlement Feb 14, 2025
674,628 shares short
-31,837 shares (-4.5%) vs Jan 31, 2025
14.2% of the stored float. Published Feb 26, 2025.
Settlement Jan 31, 2025
706,465 shares short
+158,705 shares (+29%) vs Jan 15, 2025
14.9% of the stored float. Published Feb 11, 2025.
Settlement Jan 15, 2025
547,760 shares short
+14,144 shares (+2.7%) vs Dec 31, 2024
11.6% of the stored float. Published Jan 27, 2025.
Settlement Dec 31, 2024
533,616 shares short
-17,849 shares (-3.2%) vs Dec 13, 2024
11.3% of the stored float. Published Jan 10, 2025.
Settlement Dec 13, 2024
551,465 shares short
+7,513 shares (+1.4%) vs Nov 29, 2024
11.6% of the stored float. Published Dec 24, 2024.
Settlement Nov 29, 2024
543,952 shares short
+24,424 shares (+4.7%) vs Nov 15, 2024
11.5% of the stored float. Published Dec 10, 2024.
Settlement Nov 15, 2024
519,528 shares short
-116,752 shares (-18.3%) vs Oct 31, 2024
11% of the stored float. Published Nov 26, 2024.
Settlement Oct 31, 2024
636,280 shares short
-2,875 shares (-0.4%) vs Oct 15, 2024
13.4% of the stored float. Published Nov 11, 2024.
Settlement Oct 15, 2024
639,155 shares short
+112,776 shares (+21.4%) vs Sep 30, 2024
13.5% of the stored float. Published Oct 24, 2024.
Settlement Sep 30, 2024
526,379 shares short
+63,420 shares (+13.7%) vs Sep 13, 2024
11.1% of the stored float. Published Oct 9, 2024.
Settlement Sep 13, 2024
462,959 shares short
+52,506 shares (+12.8%) vs Aug 30, 2024
9.8% of the stored float. Published Sep 24, 2024.
Settlement Aug 30, 2024
410,453 shares short
+32,000 shares (+8.5%) vs Aug 15, 2024
8.7% of the stored float. Published Sep 11, 2024.
Settlement Aug 15, 2024
378,453 shares short
+17,925 shares (+5%) vs Jul 31, 2024
8% of the stored float. Published Aug 26, 2024.
Settlement Jul 31, 2024
360,528 shares short
-179,458 shares (-33.2%) vs Jul 15, 2024
7.6% of the stored float. Published Aug 9, 2024.
Settlement Jul 15, 2024
539,986 shares short
-35,302 shares (-6.1%) vs Jun 28, 2024
11.4% of the stored float. Published Jul 24, 2024.
Settlement Jun 28, 2024
575,288 shares short
12.1% of the stored float. Published Jul 10, 2024.
Settlement Jun 14, 2024
10,776,110 shares short
-494,538 shares (-4.4%) vs May 31, 2024
Published Jun 26, 2024.
Settlement May 31, 2024
11,270,648 shares short
-344,457 shares (-3%) vs May 15, 2024
Published Jun 11, 2024.
Settlement May 15, 2024
11,615,105 shares short
-263,778 shares (-2.2%) vs Apr 30, 2024
Published May 24, 2024.
Settlement Apr 30, 2024
11,878,883 shares short
+432,836 shares (+3.8%) vs Apr 15, 2024
Published May 9, 2024.
Settlement Apr 15, 2024
11,446,047 shares short
+218,449 shares (+1.9%) vs Mar 28, 2024
Published Apr 24, 2024.
Settlement Mar 28, 2024
11,227,598 shares short
+199,820 shares (+1.8%) vs Mar 15, 2024
Published Apr 9, 2024.
Settlement Mar 15, 2024
11,027,778 shares short
+883,304 shares (+8.7%) vs Feb 29, 2024
Published Mar 26, 2024.
Settlement Feb 29, 2024
10,144,474 shares short
-728,479 shares (-6.7%) vs Feb 15, 2024
Published Mar 11, 2024.
Settlement Feb 15, 2024
10,872,953 shares short
+3,343,622 shares (+44.4%) vs Jan 31, 2024
Published Feb 27, 2024.
Settlement Jan 31, 2024
7,529,331 shares short
+199,007 shares (+2.7%) vs Jan 12, 2024
Published Feb 9, 2024.
Settlement Jan 12, 2024
7,330,324 shares short
-1,855,231 shares (-20.2%) vs Dec 29, 2023
Published Jan 24, 2024.
Settlement Dec 29, 2023
9,185,555 shares short
-941,690 shares (-9.3%) vs Dec 15, 2023
Published Jan 10, 2024.
Settlement Dec 15, 2023
10,127,245 shares short
-987,126 shares (-8.9%) vs Nov 30, 2023
Published Dec 26, 2023.
Settlement Nov 30, 2023
11,114,371 shares short
+2,951,927 shares (+36.2%) vs Nov 15, 2023
Published Dec 11, 2023.
Settlement Nov 15, 2023
8,162,444 shares short
-4,323,769 shares (-34.6%) vs Oct 31, 2023
Published Nov 24, 2023.
Settlement Oct 31, 2023
12,486,213 shares short
+215,634 shares (+1.8%) vs Oct 13, 2023
Published Nov 9, 2023.
Settlement Oct 13, 2023
12,270,579 shares short
+730,249 shares (+6.3%) vs Sep 29, 2023
Published Oct 24, 2023.
Settlement Sep 29, 2023
11,540,330 shares short
-126,439 shares (-1.1%) vs Sep 15, 2023
Published Oct 10, 2023.
Settlement Sep 15, 2023
11,666,769 shares short
+139,542 shares (+1.2%) vs Aug 31, 2023
Published Sep 26, 2023.
Settlement Aug 31, 2023
11,527,227 shares short
-664,103 shares (-5.4%) vs Aug 15, 2023
Published Sep 11, 2023.
Settlement Aug 15, 2023
12,191,330 shares short
-759,394 shares (-5.9%) vs Jul 31, 2023
Published Aug 24, 2023.
Settlement Jul 31, 2023
12,950,724 shares short
+330,069 shares (+2.6%) vs Jul 14, 2023
Published Aug 9, 2023.
Settlement Jul 14, 2023
12,620,655 shares short
+919,511 shares (+7.9%) vs Jun 30, 2023
Published Jul 25, 2023.
Settlement Jun 30, 2023
11,701,144 shares short
-1,503,664 shares (-11.4%) vs Jun 15, 2023
Published Jul 11, 2023.
Settlement Jun 15, 2023
13,204,808 shares short
+584,972 shares (+4.6%) vs May 31, 2023
Published Jun 26, 2023.
Settlement May 31, 2023
12,619,836 shares short
-1,559,448 shares (-11%) vs May 15, 2023
Published Jun 9, 2023.
Settlement May 15, 2023
14,179,284 shares short
-3,615,090 shares (-20.3%) vs Apr 28, 2023
Published May 24, 2023.
Settlement Apr 28, 2023
17,794,374 shares short
-1,418,128 shares (-7.4%) vs Apr 14, 2023
Published May 9, 2023.
Settlement Apr 14, 2023
19,212,502 shares short
-749,254 shares (-3.8%) vs Mar 31, 2023
Published Apr 25, 2023.
Settlement Mar 31, 2023
19,961,756 shares short
+3,261,073 shares (+19.5%) vs Mar 15, 2023
Published Apr 11, 2023.
Settlement Mar 15, 2023
16,700,683 shares short
+2,631,968 shares (+18.7%) vs Feb 28, 2023
Published Mar 24, 2023.
Settlement Feb 28, 2023
14,068,715 shares short
+63,103 shares (+0.5%) vs Feb 15, 2023
Published Mar 9, 2023.
Settlement Feb 15, 2023
14,005,612 shares short
-181,094 shares (-1.3%) vs Jan 31, 2023
Published Feb 24, 2023.
Settlement Jan 31, 2023
14,186,706 shares short
+559,063 shares (+4.1%) vs Jan 13, 2023
Published Feb 9, 2023.
Settlement Jan 13, 2023
13,627,643 shares short
+616,608 shares (+4.7%) vs Dec 30, 2022
Published Jan 24, 2023.
Settlement Dec 30, 2022
13,011,035 shares short
+624,150 shares (+5%) vs Dec 15, 2022
Published Jan 10, 2023.
Settlement Dec 15, 2022
12,386,885 shares short
+142,366 shares (+1.2%) vs Nov 30, 2022
Published Dec 26, 2022.
Settlement Nov 30, 2022
12,244,519 shares short
+190,881 shares (+1.6%) vs Nov 15, 2022
Published Dec 9, 2022.
Settlement Nov 15, 2022
12,053,638 shares short
+133,309 shares (+1.1%) vs Oct 31, 2022
Published Nov 24, 2022.
Settlement Oct 31, 2022
11,920,329 shares short
+18,990 shares (+0.2%) vs Oct 14, 2022
Published Nov 9, 2022.
Settlement Oct 14, 2022
11,901,339 shares short
-416,913 shares (-3.4%) vs Sep 30, 2022
Published Oct 25, 2022.
Settlement Sep 30, 2022
12,318,252 shares short
-26,839 shares (-0.2%) vs Sep 15, 2022
Published Oct 11, 2022.
Settlement Sep 15, 2022
12,345,091 shares short
+1,132,971 shares (+10.1%) vs Aug 31, 2022
Published Sep 26, 2022.
Settlement Aug 31, 2022
11,212,120 shares short
-67,908 shares (-0.6%) vs Aug 15, 2022
Published Sep 9, 2022.
Settlement Aug 15, 2022
11,280,028 shares short
+744,267 shares (+7.1%) vs Jul 29, 2022
Published Aug 24, 2022.
Settlement Jul 29, 2022
10,535,761 shares short
+2,493,190 shares (+31%) vs Jul 15, 2022
Published Aug 9, 2022.
Settlement Jul 15, 2022
8,042,571 shares short
-2,658,995 shares (-24.8%) vs Jun 30, 2022
Published Jul 26, 2022.
Settlement Jun 30, 2022
10,701,566 shares short
-571,190 shares (-5.1%) vs Jun 15, 2022
Published Jul 11, 2022.
Settlement Jun 15, 2022
11,272,756 shares short
-455,976 shares (-3.9%) vs May 31, 2022
Published Jun 24, 2022.
Settlement May 31, 2022
11,728,732 shares short
+708,776 shares (+6.4%) vs May 13, 2022
Published Jun 9, 2022.
Settlement May 13, 2022
11,019,956 shares short
-774,782 shares (-6.6%) vs Apr 29, 2022
Published May 24, 2022.
Settlement Apr 29, 2022
11,794,738 shares short
+2,069,138 shares (+21.3%) vs Mar 31, 2022
Published May 10, 2022.
Settlement Mar 31, 2022
9,725,600 shares short
+988,756 shares (+11.3%) vs Mar 15, 2022
Published Apr 11, 2022.
Settlement Mar 15, 2022
8,736,844 shares short
+1,485,296 shares (+20.5%) vs Feb 28, 2022
Published Mar 24, 2022.
Settlement Feb 28, 2022
7,251,548 shares short
+183,915 shares (+2.6%) vs Feb 15, 2022
Published Mar 9, 2022.
Settlement Feb 15, 2022
7,067,633 shares short
+98,773 shares (+1.4%) vs Jan 31, 2022
149.2% of the stored float. Published Feb 24, 2022.
Settlement Jan 31, 2022
6,968,860 shares short
+1,025,398 shares (+17.3%) vs Jan 14, 2022
147.1% of the stored float. Published Feb 9, 2022.
Settlement Jan 14, 2022
5,943,462 shares short
-3,480,611 shares (-36.9%) vs Dec 31, 2021
125.5% of the stored float. Published Jan 25, 2022.
Settlement Dec 31, 2021
9,424,073 shares short
+318,261 shares (+3.5%) vs Dec 15, 2021
Published Jan 11, 2022.
Settlement Dec 15, 2021
9,105,812 shares short
+410,932 shares (+4.7%) vs Nov 30, 2021
Published Dec 24, 2021.
Settlement Nov 30, 2021
8,694,880 shares short
-291,767 shares (-3.2%) vs Nov 15, 2021
Published Dec 9, 2021.
Settlement Nov 15, 2021
8,986,647 shares short
-1,848,241 shares (-17.1%) vs Oct 29, 2021
Published Nov 24, 2021.
Settlement Oct 29, 2021
10,834,888 shares short
-136,908 shares (-1.2%) vs Oct 15, 2021
Published Nov 9, 2021.
Settlement Oct 15, 2021
10,971,796 shares short
-746,536 shares (-6.4%) vs Sep 30, 2021
Published Oct 26, 2021.
Settlement Sep 30, 2021
11,718,332 shares short
-760,947 shares (-6.1%) vs Sep 15, 2021
Published Oct 11, 2021.
Settlement Sep 15, 2021
12,479,279 shares short
+258,979 shares (+2.1%) vs Aug 31, 2021
Published Sep 24, 2021.
Settlement Aug 31, 2021
12,220,300 shares short
-560,641 shares (-4.4%) vs Aug 13, 2021
Published Sep 9, 2021.
Settlement Aug 13, 2021
12,780,941 shares short
-277,659 shares (-2.1%) vs Jul 30, 2021
Published Aug 24, 2021.
Settlement Jul 30, 2021
13,058,600 shares short
+973,499 shares (+8.1%) vs Jul 15, 2021
Published Aug 10, 2021.
Settlement Jul 15, 2021
12,085,101 shares short
+427,831 shares (+3.7%) vs Jun 30, 2021
Published Jul 26, 2021.
Settlement Jun 30, 2021
11,657,270 shares short
-976,283 shares (-7.7%) vs Jun 15, 2021
Published Jul 9, 2021.
Settlement Jun 15, 2021
12,633,553 shares short
-148,233 shares (-1.2%) vs May 14, 2021
Published Jun 24, 2021.
Settlement May 14, 2021
12,781,786 shares short
+637,635 shares (+5.3%) vs Apr 30, 2021
Published May 25, 2021.
Settlement Apr 30, 2021
12,144,151 shares short
-355,163 shares (-2.8%) vs Apr 15, 2021
Published May 11, 2021.
Settlement Apr 15, 2021
12,499,314 shares short
-616,596 shares (-4.7%) vs Mar 31, 2021
Published Apr 26, 2021.
Settlement Mar 31, 2021
13,115,910 shares short
+1,405,364 shares (+12%) vs Mar 15, 2021
Published Apr 9, 2021.
Settlement Mar 15, 2021
11,710,546 shares short
+606,733 shares (+5.5%) vs Feb 26, 2021
Published Mar 24, 2021.
Settlement Feb 26, 2021
11,103,813 shares short
-719,991 shares (-6.1%) vs Jan 29, 2021
Published Mar 9, 2021.
Settlement Jan 29, 2021
11,823,804 shares short
+559,253 shares (+5%) vs Jan 15, 2021
Published Feb 9, 2021.
Settlement Jan 15, 2021
11,264,551 shares short
Published Jan 26, 2021.
Change = this settlement’s shares short − the previous recorded settlement’s shares short; percentage change divides by that earlier count. A zero earlier count has no percentage change. Split-spanning counts are left uncompared. Float percentages use the stored settlement observation, not today’s float.
Source: stored FINRA equity short-interest records. Adjusted prices exclude a reused ticker’s earlier issuer. FINRA data and reporting dates · How to read short interest
Dividends and stock splits
Through Nov 13, 2026
Recorded amounts and dates, not confirmation of cash received.
View all 1 split
| Ex-date | Event | Recorded detail |
|---|---|---|
| Jun 20, 2024 | Reverse split | 1 for 25Each 25 pre-split shares become 1 post-split share. |
Cash bars retain the event's recorded currency and share basis. The yield line divides recorded cash in the preceding 365 days, adjusted for intervening splits, by a verified raw close in the same currency. Special dividends are included. Future ex-dates are excluded from yield. A split changes share count, not investment value. For long shares, past entitlement depends on when you held them; short shares can create a dividend payment obligation.
Source: recorded cash-dividend and split events.
Portfolio context
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Sign inMarket context
Smart money context
Holder IQ: HIGH
10 smart-money holders: institutions with a high Holder IQ
Q2 2026, filed Sep 22, 2026
Insider context
Sentiment: neutral
Last trade: buy 70 days ago
Read the insider context evidence
What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
Stored recent-activity label: neutral. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
Red flags: 1
Largest 13-F holders · Q2 2026
35 filers reported a long position in ATRA for Q2 2026. 13-F holdings are filed up to 45 days after the quarter ends.
The top 10 hold
95.4%
of the 4.5M shares 13-F filers reported
Moves vs Q1 2026
7 added1 trimmed
2 unchanged
Net shares held
+94.2%
across the 10 holders with a comparable Q1 2026 book
| Rank | Holder | Value | Shares | Shares vs Q1 2026 |
|---|---|---|---|---|
| 1 | EcoR1 Capital, LLC | $17.8M · 1.6M shares | 1.6M | +1,458.3% |
| 2 | Adage Capital Partners GP, L.L.C. | $9.8M · 850K shares | 850K | +21.4% |
| 3 | Point72 Asset Management, L.P. | $7.9M · 687.7K shares | 687.7K | +254% |
| 4 | Redmile Group, LLC | $5.1M · 441.7K shares | 441.7K | Unchanged |
| 5 | Vanguard Capital Management LLC | $2.8M · 247K shares | 247K | +13.4% |
| 6 | Mackenzie Financial Corp | $2.7M · 233.2K shares | 233.2K | -25.6% |
| 7 | BlackRock, Inc. | $969.5K · 84.5K shares | 84.5K | +6.9% |
| 8 | Geode Capital Management, LLC | $862.9K · 75.1K shares | 75.1K | +13.6% |
| 9 | Staley Capital Advisers Inc | $574K · 50K shares | 50K | Unchanged |
| 10 | Vanguard Fiduciary Trust Co | $494.1K · 43K shares | 43K | +28% |
Sign in to see each holder’s Holder IQ, factor-adjusted Holder IQ and rank, and compare these holders with all scored filers. Available on every plan.
Sign in5% holder filings (13D / 13G)
Holders of more than 5% of ATRA file with the SEC within days. A 13D holder may seek to influence the company; a 13G holder is passive. Each holder’s latest filing from the last three years.
| Filed | Holder | % of class |
|---|---|---|
| Aug 14, 2026 | Point72 Asset Management, L.P.13G · passive · amended | 7.6% |
| Jul 24, 2026 | Redmile Group, LLC13D · activist · amended | 9.9% |
| May 13, 2026 | Adage Capital Management LP13G · passive | 8.56% |
| May 7, 2026 | EcoR1 Capital, LLC13G · passive · amended | 17.4% |
Moves the factor model did not explain
How much of ATRA’s move accompanied the market and its measured style leanings, and how much was left? The residual is unexplained by this fitted model. It does not establish a cause, skill or future alpha.
- Market
- -0.88%
- Style leanings
- -8.30%
- Unexplained residual
- -8.64%
- Stock move
- -17.82%
Window contributions are percentage points of starting stock value. The market bar is the fitted common intercept, not an index return. Market + styles + residual = stock move; opposite signs can offset. Source: daily_returns, dated security_factor_exposures × barra_factor_returns, and stored security_specific_returns; 2026-10-15–2026-11-12, model v1.2.0. Returns are dimensionless on the USD listing; no currency conversion.
Link an account with dated transactions to see what share of your own holding’s move since its purchase-date close was unexplained, with long and short positions distinguished. Your private holdings never enter this public chart.
Dated model observations (20)
Daily percentage returns, not window contributions. Source: the same dated warehouse rows and model v1.2.0; observed 2026-11-13T16:02:55.174Z. Absent sessions are never interpolated; missing or failed inputs stay unavailable.
| Date | Stock | Market | Styles | Residual |
|---|---|---|---|---|
| -4.87% | -1.05% | -5.66% | +1.84% | |
| -2.40% | +0.36% | +0.38% | -3.13% | |
| +2.23% | +0.43% | +0.71% | +1.09% | |
| +2.07% | +0.49% | +1.88% | -0.30% | |
| +0.86% | -1.09% | -6.77% | +8.72% | |
| -8.91% | -0.46% | -0.50% | -7.95% | |
| -2.79% | +0.50% | +0.65% | -3.95% | |
| -0.60% | +0.68% | +2.28% | -3.56% | |
| +4.34% | +0.37% | +2.02% | +1.95% | |
| -1.50% | -0.46% | +3.02% | -4.06% | |
| -6.10% | -1.77% | -6.84% | +2.52% | |
| +5.87% | -0.24% | -1.03% | +7.13% | |
| -3.30% | +0.35% | +4.07% | -7.71% | |
| +2.07% | +1.75% | -1.89% | +2.22% | |
| -4.90% | -3.95% | -7.26% | +6.31% | |
| -1.13% | +0.71% | +5.11% | -6.95% | |
| +3.94% | +2.42% | +4.72% | -3.20% | |
| -0.98% | -0.29% | -1.33% | +0.65% | |
| +1.60% | +1.19% | +0.87% | -0.46% | |
| -3.65% | -0.45% | -2.14% | -1.05% |
How this split is calculated
Each day uses that day’s fitted market intercept and style exposures multiplied by that day’s published factor returns. Their sum plus the independently stored residual must reconcile to the stock return. Window effects are weighted by stock wealth at each day’s start and added; the stock return compounds. Every expected US market session must be present and pass source, identity, model and numerical checks. This retrospective fit is an explanation of measured returns, not evidence of causation or an investable forecast. The window ends at the latest published model session, which can lag the market; today’s unfinished session is excluded.
What insiders reported owning
Reading dated filing evidence…
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