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Super Investors Altimeter Capital Management, LP
AC

Altimeter Capital Management, LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$9.83B
Positions
20
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (53 quarters reported)

$14B $560M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$560M in Q2 2013 → $9.83B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Nvidia Corporation 19.2% Added 0.8% 9,413,589 $1.88B
Cerebras Systems Inc 16.2% New 7,225,037 $1.6B
Meta Platforms Inc 7.8% Trimmed 31% 1,354,990 $763M
TS Taiwan Semiconductor Mfg Ltd 6.9% Added 4.7% 1,429,355 $683M
Coreweave Inc 6.2% Added 35% 6,073,695 $605M
Arm Holdings PLC 5.9% Trimmed 4.3% 1,641,972 $582M
Amazon Com Inc 5.9% Added 16% 2,425,351 $578M
Uber Technologies Inc 5.4% Trimmed 7.5% 7,372,440 $532M
Snowflake Inc 5.0% Unchanged 1,926,250 $490M
Microsoft Corp 4.8% Added 7.1% 1,268,082 $473M
Qualcomm Inc 3.5% New 1,882,490 $348M
SE Space Exploration Techn Corp 3.1% New 1,776,485 $304M
Micron Technology Inc 2.5% New 209,520 $242M
AM Applied Matls Inc 1.9% New 261,950 $189M
Kla Corp 1.8% New 578,230 $174M
Lam Research Corp 1.7% New 394,080 $171M
RM Robinhood Mkts Inc 0.9% Unchanged 899,691 $90.2M
Alphabet Inc 0.6% New 175,180 $62.6M
Synopsys Inc 0.6% New 140,343 $62.6M
Grab Holdings Limited 0.0% New 3,502,000 $151K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Cerebras Systems Inc New +7,225,037 +$1.6B 16.2%
Qualcomm Inc New +1,882,490 +$348M 3.5%
Meta Platforms Inc Trimmed −598,383 −$337M 7.8%
SE Space Exploration Techn Corp New +1,776,485 +$304M 3.1%
Micron Technology Inc New +209,520 +$242M 2.5%
AM Applied Matls Inc New +261,950 +$189M 1.9%
Kla Corp New +578,230 +$174M 1.8%
Lam Research Corp New +394,080 +$171M 1.7%
Coreweave Inc Added +1,574,620 +$157M 6.2%
Amazon Com Inc Added +335,793 +$80M 5.9%

Showing the 10 largest of 21 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Coupang Inc Exited −15,676,794 −$370M —
Arm Holdings PLC New +1,715,440 +$260M 4.6%
Nvidia Corporation Added +1,236,266 +$216M 28.6%
C Confluent Inc Exited −6,933,250 −$210M —
Uber Technologies Inc Added +2,382,980 +$171M 10.1%
Alphabet Inc Exited −519,290 −$163M —
Zillow Group Inc Exited −2,187,421 −$149M —
Mercadolibre Inc Exited −68,480 −$138M —
Coreweave Inc Added +1,285,845 +$99.6M 6.1%
Shopify Inc Exited −570,210 −$91.8M —

Showing the 10 largest of 19 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Broadcom Inc Trimmed −712,647 −$247M 0.2%
Coreweave Inc New +3,213,230 +$230M 3.5%
Pdd Holdings Inc Exited −1,371,680 −$181M —
AG Alibaba Group Hldg Ltd Exited −969,100 −$173M —
Arm Holdings PLC Exited −1,098,139 −$155M —
RM Robinhood Mkts Inc Trimmed −1,303,583 −$147M 2.2%
Coupang Inc Added +5,652,210 +$133M 5.6%
C Confluent Inc Trimmed −4,348,543 −$131M 3.1%
Synopsys Inc Exited −258,280 −$127M —
Maplebear Inc Exited −3,324,951 −$122M —

Showing the 10 largest of 23 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Broadcom Inc New +744,776 +$246M 3.2%
Pdd Holdings Inc New +1,371,680 +$181M 2.4%
AG Alibaba Group Hldg Ltd New +969,100 +$173M 2.3%
Amazon Com Inc Added +702,611 +$154M 6.3%
Synopsys Inc New +258,280 +$127M 1.7%
Samsara Inc Exited −2,990,578 −$119M —
Datadog Inc Exited −881,730 −$118M —
Nvidia Corporation Trimmed −607,262 −$113M 18.8%
Coreweave Inc Exited −649,536 −$106M —
RM Robinhood Mkts Inc Trimmed −648,582 −$92.9M 4.9%

Showing the 10 largest of 25 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
IQ Invesco Qqq Tr Exited −988,000 −$463M —
Coreweave Inc Trimmed −2,350,000 −$383M 1.5%
TS Taiwan Semiconductor Mfg Ltd New +867,209 +$196M 2.8%
Nvidia Corporation Added +1,101,683 +$174M 18.8%
FE Flutter Entmt PLC Exited −568,410 −$126M —
Arm Holdings PLC Added +757,608 +$123M 2.2%
Coupang Inc Added +3,991,253 +$120M 4.9%
Samsara Inc New +2,990,578 +$119M 1.7%
Datadog Inc New +881,730 +$118M 1.7%
Mercadolibre Inc Added +43,239 +$113M 1.8%

Showing the 10 largest of 24 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
IQ Invesco Qqq Tr New +988,000 +$463M 9.3%
Snowflake Inc Trimmed −2,030,926 −$297M 8.7%
Alphabet Inc Exited −867,305 −$164M —
Tesla Inc Exited −355,130 −$143M —
RM Robinhood Mkts Inc New +2,885,714 +$120M 2.4%
Coreweave Inc New +2,999,536 +$111M 2.2%
TS Taiwan Semiconductor Mfg Ltd Exited −504,380 −$99.6M —
Salesforce Inc Exited −271,725 −$90.8M —
Nvidia Corporation Trimmed −695,292 −$75.4M 15.6%
AG Alibaba Group Hldg Ltd New +540,370 +$71.5M 1.4%

Showing the 10 largest of 28 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
Snowflake Inc Trimmed −3,669,649 −$567M 13.9%
Uber Technologies Inc Trimmed −7,747,808 −$467M 6.1%
Microsoft Corp Trimmed −592,420 −$250M 7.6%
Meta Platforms Inc Trimmed −421,815 −$247M 19.4%
KT Kraneshares Trust Exited −5,671,010 −$193M —
Tesla Inc Trimmed −307,270 −$124M 2.6%
Maplebear Inc New +2,537,618 +$105M 1.9%
FE Flutter Entmt PLC New +380,315 +$98.3M 1.8%
Broadcom Inc Exited −396,895 −$68.5M —
Twilio Inc New +582,915 +$63M 1.1%

Showing the 10 largest of 27 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
Pdd Holdings Inc Exited −1,714,185 −$228M —
KT Kraneshares Trust New +5,671,010 +$193M 2.9%
Tesla Inc New +662,400 +$173M 2.6%
AN Amphenol Corp New Exited −2,025,300 −$136M —
Snowflake Inc Trimmed −902,787 −$104M 14.7%
Amazon Com Inc Trimmed −532,040 −$99.1M 2.5%
TS Taiwan Semiconductor Mfg Ltd New +519,290 +$90.2M 1.3%
Broadcom Inc New +396,895 +$68.5M 1.0%
Dell Technologies Inc Exited −493,940 −$68.1M —
Apple Inc Exited −271,370 −$57.2M —

Showing the 10 largest of 26 changes.

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