Altimeter Capital Management, LLC

Hedge Fund • Long/Short

Altimeter Capital Management, LLC is a Long/Short Hedge Fund based in Boston, MA led by Bradley Thomas Gerstner, reporting $12.7B in AUM as of Q3 2025 with 58% Technology concentration, 82% concentrated in top 10 holdings, 19% allocation to NVDA, and 58% technology allocation.

CEOBradley Thomas Gerstner

Portfolio Value: $7.6B
Positions: 23
Top Holding: NVDA at 18.81%
Last Reported: Q3 2025

AddressOne International Place, Suite 4610, Boston, MA, 02110, United States

Top Holdings

Largest long holdings in Altimeter Capital Management, LLC's portfolio (81.9% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 Nvidia NVDA	Semiconductors Technology	$1.4B	18.81%	-$113.3M Sold	0.03% 7.6M shares	Q4 2022 Held for 2y 11m
2 Meta Platforms, Inc. META	Internet Content & Information Communication Services	$1.4B	18.07%	-$8.3M Sold	0.07% 1.9M shares	Q1 2018 Held for 7y 8m
3 Microsoft MSFT	Software - Infrastructure Technology	$601.9M	7.94%	+$53.9M Bought	0.02% 1.2M shares	Q1 2018 Held for 7y 8m
4 Snowflake SNOW	Software - Application Technology	$547.7M	7.22%	-$89.6M Sold	0.72% 2.4M shares	Q3 2020 Held for 5y 2m
5 Uber Technologies UBER	Software - Application Technology	$547.5M	7.22%	-$35.7M Sold	0.27% 5.6M shares	Q2 2019 Held for 6y 5m
6 Amazon AMZN	Specialty Retail Consumer Cyclical	$475.9M	6.28%	+$154.3M Bought	0.02% 2.2M shares	Q2 2023 Held for 2y 5m
7 Robinhood Markets, Inc. HOOD	Software - Infrastructure Technology	$371.8M	4.90%	-$92.9M Sold	0.29% 2.6M shares	Q1 2025 Held for 8 months
8 Coupang CPNG	Specialty Retail Consumer Cyclical	$322.8M	4.26%	-$45.3M Sold	0.55% 10.0M shares	Q1 2024 Held for 1y 8m
9 Taiwan Semiconductor Manufacturing Company TSM	Semiconductors Technology	$298.5M	3.94%	+$56.3M Bought	— 1.1M shares	Q3 2024 Held for 1y 2m
10 Broadcom Inc. AVGO	Semiconductors Technology	$245.7M	3.24%	+$245.7M Bought	0.02% 744.8K shares	Q3 2025 Held for 2 months

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Altimeter Capital Management, LLC's latest filing

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Market Value

$7.6B

Prior: $6.9B

Q/Q Change

+9.4%

+$651.3M

Net Flows % of MV

-5.42%

Turnover Ratio

13.38%

New Purchases

4 stocks

$183.0M

Added To

4 stocks

+$287.7M

Sold Out Of

3 stocks

$343.3M

Reduced Holdings

10 stocks

-$538.3M

Increased Positions

Position	Shares Δ	Change
1 Synopsys SNPS	New	0 → 258.3K +$127.4M
2 GEMI Gemini Space Station, Inc. Class A Common Stock GEMI	New	0 → 1.6M +$38.3M
3 PTRN Pattern Group Inc. Series A Common Stock PTRN	New	0 → 721.4K +$9.9M
4 NTSK Netskope, Inc. Class A Common Stock NTSK	New	0 → 325.0K +$7.4M
5 Amazon AMZN	+47.96%	1.5M → 2.2M +$154.3M

Decreased Positions

Position	Shares Δ	Change
1 Samsara IOT	Sold	3.0M → 0 −$119.0M
2 Datadog, Inc. DDOG	Sold	881.7K → 0 −$118.4M
3 CoreWeave, Inc. CRWV	Sold	649.5K → 0 −$105.9M
4 Confluent CFLT	-27.46%	15.6M → 11.3M −$84.6M
5 Maplebear Inc. CART	-21.15%	4.2M → 3.3M −$32.8M