Citadel Advisors 13F, Q1 2026
Ken Griffin · quarter ending 31 March 2026 · filed 15 May 2026 · SEC CIK 1423053
Common stock only: shares the fund reported owning at the quarter end, valued as filed. The filing also lists 6,851 put and call lines, reported at the value of the underlying shares; they are not ownership and are not in these totals.
Largest positions, Q1 2026
The 25 largest of 6,006 positions. Weights are against the whole filed book. Changes are in shares held, against the Q4 2025 filing.
| Company | Ticker | Value | % of book | vs Q4 2025 |
|---|---|---|---|---|
| NVIDIA CORPORATION | NVDA | $3.26B | 2.3% | -13% shares |
| ISHARES TR | IVV | $2.65B | 1.9% | +5364% shares |
| AMAZON COM INC | AMZN | $1.69B | 1.2% | -43% shares |
| MICRON TECHNOLOGY INC | MU | $1.55B | 1.1% | +51% shares |
| STATE STR SPDR DOW JONES IND | DIA | $1.55B | 1.1% | -30% shares |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | $1.36B | 1.0% | +35% shares |
| APPLE INC | AAPL | $1.32B | 0.9% | -6% shares |
| META PLATFORMS INC | META | $1.05B | 0.7% | +129% shares |
| BROADCOM INC | AVGO | $1.01B | 0.7% | -16% shares |
| MICROSOFT CORP | MSFT | $976.55M | 0.7% | -19% shares |
| ALPHABET INC | GOOGL | $816.69M | 0.6% | -3% shares |
| WARNER BROS DISCOVERY INC | WBD | $806.79M | 0.6% | +149% shares |
| TESLA INC | TSLA | $777.82M | 0.6% | +135% shares |
| NORFOLK SOUTHN CORP | NSC | $752.05M | 0.5% | +3% shares |
| JPMORGAN CHASE & CO | JPM | $715.45M | 0.5% | +87% shares |
| WESTERN DIGITAL CORP | WDC 3 11/15/28 | $696.71M | 0.5% | +7% shares |
| ALPHABET INC | GOOG | $689.63M | 0.5% | +4% shares |
| BLACKROCK INC | BLK | $676.19M | 0.5% | +74% shares |
| INTUITIVE SURGICAL INC | ISRG | $625.11M | 0.4% | +30% shares |
| ELECTRONIC ARTS INC | EA | $593.32M | 0.4% | +203% shares |
| MARRIOTT INTL INC NEW | MAR | $572.75M | 0.4% | +3% shares |
| BERKSHIRE HATHAWAY INC DEL | BRK/B | $571.93M | 0.4% | +14% shares |
| MASTERCARD INCORPORATED | MA | $562.45M | 0.4% | +516% shares |
| CONSTELLATION BRANDS INC | STZ | $556.40M | 0.4% | +377% shares |
| GILEAD SCIENCES INC | GILD | $555.00M | 0.4% | +2% shares |
What changed since Q4 2025
Against the Q4 2025 filing, Citadel Advisors opened 1,520 new positions, added to 2,202, trimmed 2,126, left 158 unchanged and exited 1,384. Every position is compared, matched on its CUSIP; a change of 2% or less in shares counts as unchanged.
New positions
- ASTRAZENECA PLC$368.76M
- IEF$327.48M
- PNFP$281.09M
- ECHO 3.875 11/30/30$196.87M
- SLV$152.97M
- FPS$131.54M
- MANE$115.29M
- INDV$108.94M
and 1,512 more
Exited
- STX 3.5 06/01/28was $335.95M
- CYBERARK SOFTWARE LTDwas $304.71M
- SOXLwas $127.81M
- PINNACLE FINL PARTNERS INCwas $122.96M
- TEVAwas $120.09M
- RNAGBPwas $114.86M
- ASCENDIS PHARMA A/Swas $110.78M
- INDIVIOR PLCwas $109.86M
and 1,376 more
Other quarters
Source: SEC Form 13F-HR, accession 0001104659-26-062477, filed by CITADEL ADVISORS LLC. Values are as filed and cover US-listed positions only; a 13F does not show short positions or holdings outside the US. A 13F may be filed up to 45 days after the quarter ends, so the fund may have traded since. Educational information, not financial advice.