Altimeter Capital Management, LP — Quarter-over-Quarter 13F Allocation Shifts Q1 2026
In Q1 2026, Altimeter Capital Management, LP initiated 2 new positions, increased allocation to 6 existing positions, trimmed 4 positions, and exited 7 positions entirely. The fund's 13F equity book declined from $6.66B to $5.70B (-14.4% QoQ) . All deltas are sourced from sequential SEC Form 13F-HR filings; share-count changes reflect explicit trading activity, while weight changes can also include price movement. This page lists every position change reported — the portfolio overview shows a summary of the top shifts.
Net Portfolio Value Change
- $6.66BPrior quarter
- $5.70BCurrent quarter
- $-0.96BNet delta
- -14.4%% change
New Position Initiations Q1 2026
Securities disclosed for the first time in Q1 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Allocation Weight | History |
|---|---|---|---|
| ARM HOLDINGS PLC | ARM | 4.55% | History → |
| AXON ENTERPRISE, INC. | AXON | 1.11% | History → |
Largest Allocation Increases Q1 2026
Largest portfolio-weight increases in existing positions. Share-count delta is shown separately so price-only re-weighting can be distinguished from active adds.
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| BROADCOM INC | AVGO | +0.20% | +108.83% | Holders → |
| UBER TECHNOLOGIES INC | UBER | +3.21% | +42.64% | History → |
| COREWEAVE INC | CRWV | +2.66% | +40.02% | History → |
| NVIDIA CORPORATION | NVDA | +5.89% | +15.26% | History → |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | +2.54% | +12.01% | History → |
| META PLATFORMS INC | META | +1.32% | +5.85% | History → |
Largest Allocation Reductions Q1 2026
Largest portfolio-weight decreases in existing positions (positions kept open at a lower allocation).
| Company | Ticker | Δ Weight | Δ Shares | History |
|---|---|---|---|---|
| ROBINHOOD MKTS INC | HOOD | -1.10% | -30.43% | Holders → |
| MICROSOFT CORP | MSFT | -1.59% | -7.34% | History → |
| AMAZON COM INC | AMZN | -0.04% | -5.69% | History → |
| SNOWFLAKE INC | SNOW | -1.58% | -5.00% | History → |
Exited Positions Q1 2026
Positions present in the prior 13F-HR filing that no longer appear in Q1 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| COUPANG INC | CPNG | 5.55% |
| CONFLUENT INC | SYN_20717M103 | 3.15% |
| ALPHABET INC | GOOGL | 2.44% |
| ZILLOW GROUP INC | Z | 2.24% |
| MERCADOLIBRE INC | MELI | 2.07% |
| SHOPIFY INC | SHOP | 1.38% |
| BLOOM ENERGY | BE | 0.34% |
Methodology & FAQ
How Altimeter Capital Management, LP Quarterly Changes Are Computed
Each row above is computed by joining the most recent 13F-HR filing for Altimeter Capital Management, LP against the immediately preceding quarterly filing for the same fund. Portfolio weights are normalized to exclude listed options for comparability. A complete description of the methodology — including how confidential treatment filings are handled and why share count rather than weight is the cleaner trading signal — is documented in the Methodology.
Which positions did Altimeter Capital Management, LP initiate in Q1 2026?
Altimeter Capital Management, LP established 2 new positions in Q1 2026: ARM HOLDINGS PLC (ARM, 4.55%), AXON ENTERPRISE, INC. (AXON, 1.11%).
Which existing positions saw the largest allocation increases for Altimeter Capital Management, LP in Q1 2026?
The largest portfolio-weight increases in existing positions were: BROADCOM INC (AVGO, +0.20% weight, +108.83% shares), UBER TECHNOLOGIES INC (UBER, +3.21% weight, +42.64% shares), COREWEAVE INC (CRWV, +2.66% weight, +40.02% shares), NVIDIA CORPORATION (NVDA, +5.89% weight, +15.26% shares), TAIWAN SEMICONDUCTOR MANUFAC (TSM, +2.54% weight, +12.01% shares), META PLATFORMS INC (META, +1.32% weight, +5.85% shares).
Which positions did Altimeter Capital Management, LP fully exit in Q1 2026?
Altimeter Capital Management, LP fully exited 7 positions in Q1 2026: COUPANG INC (CPNG, last-reported weight 5.55%), CONFLUENT INC (SYN_20717M103, last-reported weight 3.15%), ALPHABET INC (GOOGL, last-reported weight 2.44%), ZILLOW GROUP INC (Z, last-reported weight 2.24%), MERCADOLIBRE INC (MELI, last-reported weight 2.07%), SHOPIFY INC (SHOP, last-reported weight 1.38%), BLOOM ENERGY (BE, last-reported weight 0.34%).
Which existing positions saw the largest allocation reductions for Altimeter Capital Management, LP in Q1 2026?
The largest portfolio-weight reductions in positions kept open were: ROBINHOOD MKTS INC (HOOD, -1.10% weight, -30.43% shares), MICROSOFT CORP (MSFT, -1.59% weight, -7.34% shares), AMAZON COM INC (AMZN, -0.04% weight, -5.69% shares), SNOWFLAKE INC (SNOW, -1.58% weight, -5.00% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity.