13-F holdings, Q2 2026
Altimeter Capital Management, LP
A 13-F is the report large US investment managers file with the SEC each quarter, listing the stocks they held at quarter end.
- Reported value
- $9.8B
- Positions
- 20
- Filed
- Data as of
These holdings are as of , 134 days ago.
13-Fs for Q3 2026 are due by .
See this manager's Holder IQ and how the book overlaps yours
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Top holdings
- NVDA$1.9B9,413,589 shares19.2% of the book
- CBRS$1.6B7,225,037 shares16.2% of the book
- META$763.3M1,354,990 shares7.8% of the book
- TSM$682.6M1,429,355 shares6.9% of the book
- CRWV$604.6M6,073,695 shares6.2% of the book
- ARM$582.2M1,641,972 shares5.9% of the book
- AMZN$578.1M2,425,351 shares5.9% of the book
- UBER$532M7,372,440 shares5.4% of the book
- SNOW$490.2M1,926,250 shares5% of the book
- MSFT$473M1,268,082 shares4.8% of the book
What changed this quarter
7 new positions and 2 sold out, against Q1 2026. Added and trimmed positions use the change in split-adjusted shares at the Q2 2026 implied price; full exits use their Q1 2026 reported value, not sale proceeds.
Largest buys
- QCOM
QUALCOMM INC
+$347.9M
New
Your stake and evidence for QCOM
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
A position newly appears in the Q2 2026 book.
Displayed change: +$347.9M. The current book reports 1,882,490 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A new position uses its current quarter's reported dollar value; this is not the amount spent buying it.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: 347865327 USD. Current reported shares: 1882490. Prior shares on current basis: not recorded.
- MU
MICRON TECHNOLOGY INC
+$241.8M
New
Your stake and evidence for MU
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
A position newly appears in the Q2 2026 book.
Displayed change: +$241.8M. The current book reports 209,520 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A new position uses its current quarter's reported dollar value; this is not the amount spent buying it.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: 241846841 USD. Current reported shares: 209520. Prior shares on current basis: not recorded.
- AMAT
APPLIED MATLS INC
+$189.4M
New
Your stake and evidence for AMAT
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
A position newly appears in the Q2 2026 book.
Displayed change: +$189.4M. The current book reports 261,950 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A new position uses its current quarter's reported dollar value; this is not the amount spent buying it.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: 189389850 USD. Current reported shares: 261950. Prior shares on current basis: not recorded.
- KLAC
KLA CORP
+$174.5M
New
Your stake and evidence for KLAC
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
A position newly appears in the Q2 2026 book.
Displayed change: +$174.5M. The current book reports 578,230 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A new position uses its current quarter's reported dollar value; this is not the amount spent buying it.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: 174457773 USD. Current reported shares: 578230. Prior shares on current basis: not recorded.
- LRCX
LAM RESEARCH CORP
+$170.8M
New
Your stake and evidence for LRCX
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
A position newly appears in the Q2 2026 book.
Displayed change: +$170.8M. The current book reports 394,080 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A new position uses its current quarter's reported dollar value; this is not the amount spent buying it.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: 170766686 USD. Current reported shares: 394080. Prior shares on current basis: not recorded.
Largest sells
- META
META PLATFORMS INC
−$337.1M
-30.6% shares
Your stake and evidence for META
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
Reported shares decreased between Q1 2026 and Q2 2026.
Displayed change: −$337.1M. The current book reports 1,354,990 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
For an added or trimmed position, subtract split-adjusted prior shares from current shares, then multiply by the current book's reported value per share; this is not the execution price.
1,354,990 current shares − 1,953,373 prior shares on the same basis = -598,383 shares.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: -337063160.4674529 USD. Current reported shares: 1354990. Prior shares on current basis: 1953373.
- AXON
AXON ENTERPRISE INC
−$63.3M
Sold out, was 1.1% of the book
Your stake and evidence for AXON
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
The position reported in Q1 2026 is absent from the comparable Q2 2026 book.
Displayed change: −$63.3M. This was 1.1% of the prior book.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A full exit is shown as the negative of its prior reported value, not sale proceeds or a value at today's price.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: -63273000 USD. Current reported shares: not recorded. Prior shares on current basis: 148986.
- UBER
UBER TECHNOLOGIES INC
−$43.2M
-7.5% shares
Your stake and evidence for UBER
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
Reported shares decreased between Q1 2026 and Q2 2026.
Displayed change: −$43.2M. The current book reports 7,372,440 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
For an added or trimmed position, subtract split-adjusted prior shares from current shares, then multiply by the current book's reported value per share; this is not the execution price.
7,372,440 current shares − 7,971,772 prior shares on the same basis = -599,332 shares.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: -43247797.16877615 USD. Current reported shares: 7372440. Prior shares on current basis: 7971772.
- ARM
ARM HOLDINGS PLC
−$26M
-4.3% shares
Your stake and evidence for ARM
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
Reported shares decreased between Q1 2026 and Q2 2026.
Displayed change: −$26M. The current book reports 1,641,972 shares.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
For an added or trimmed position, subtract split-adjusted prior shares from current shares, then multiply by the current book's reported value per share; this is not the execution price.
1,641,972 current shares − 1,715,440 prior shares on the same basis = -73,468 shares.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: -26049548.75821025 USD. Current reported shares: 1641972. Prior shares on current basis: 1715440.
- AVGO
BROADCOM INC
−$20.8M
Sold out, was 0.36% of the book
Your stake and evidence for AVGO
What it means for you
This public view does not read your holdings or watchlist; open the member view to check your stake.
Use this to decide what to research, rather than as an instruction to copy a trade.
What happened
The position reported in Q1 2026 is absent from the comparable Q2 2026 book.
Displayed change: −$20.8M. This was 0.36% of the prior book.
Why it can matter
A change between quarter-end disclosures can prompt a question about the manager's exposure. It does not reveal the trade date, the execution price or why the position changed; a full exit is not proof of a bearish decision.
How we got this
A full exit is shown as the negative of its prior reported value, not sale proceeds or a value at today's price.
Comparable books exclude identified CUSIP, share-basis and new-security events from trades. Exit-size bands describe prior book weight, not the manager's intent.
Where the data comes from
SEC 13F quarter-end holdings for Q1 2026 and Q2 2026; these delayed disclosures omit shorts and many other assets.
Current source filed .
Technical details
Reported dollar change: -20766000 USD. Current reported shares: not recorded. Prior shares on current basis: 67094.
What was sold out, by size
- 2 real positions, 0.25% of the book or more
Not counted as trades: CBRS (newly listed or spun off), SPCX (newly listed or spun off), GRABW (new CUSIP).
All of this comes from the filer's public SEC filings. A 13-F shows long positions in US-listed securities at quarter end and can leave out short positions, cash and non-US holdings, so it is not the whole portfolio. This is filing data, not investment advice.