§ 13F · FUND PROFILE
Citadel Advisors.
Citadel Advisors is a multi-strategy hedge fund founded by Ken Griffin, known for its tactical macro approach and sophisticated quantitative trading strategies across global markets. The fund maintains an extensive portfolio of over 15,000 positions with significant exposure to major ETFs like SPY and QQQ, reflecting its systematic and diversified investment methodology.
AUM · $657.1B (13F)Positions · 15551Turnover · 43% · Q1Filed · May 15, 2026
CONCENTRATION
22%
Top 10 holdings
NEW BUYS
+1324
+$4.0B deployed
EXITS
0
No exits
SECTOR SHIFT
MEDIA → OTHER
-1pp · +0pp
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 15, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | SPY | STATE STR SPDR S&P 500 ETF T | 37.15M | $24.2B | 3.9% | +12% |
| 2 | QQQ | INVESCO QQQ TR | 35.59M | $20.5B | 3.3% | −7% |
| 3 | SPY | STATE STR SPDR S&P 500 ETF T | 26.91M | $17.5B | 2.8% | — |
| 4 | TSLA | TESLA INC | 36.36M | $13.5B | 2.2% | −17% |
| 5 | NVDA | NVIDIA CORPORATION | 66.84M | $11.7B | 1.9% | −11% |
| 6 | QQQ | INVESCO QQQ TR | 19.33M | $11.2B | 1.8% | — |
| 7 | TSLA | TESLA INC | 25.40M | $9.4B | 1.5% | — |
| 8 | GLD | SPDR GOLD TR | 21.77M | $9.4B | 1.5% | +9% |
| 9 | NVDA | NVIDIA CORPORATION | 51.66M | $9.0B | 1.5% | — |
| 10 | AAPL | APPLE INC | 31.78M | $8.1B | 1.3% | −8% |
§ 02 · SECTOR ALLOCATION
Where the money is
Other32.1% (±0)
Technology12.2% (−1pp)
Semiconductors11.4% (±0)
Media7.3% (−1pp)
Retail5.2% (−1pp)
Financial Services4.4%
§ 03 · THE CITADEL SIGNAL
AC read
Citadel Advisors' latest 13F filing reveals the hallmarks of a highly sophisticated quantitative trading operation, with the fund's $657.1 trillion in assets under management spread across an extraordinary 15,551 positions. The fund's extreme diversification is evident in its Herfindahl-Hirschman Index of just 0.007, indicating that no single position dominates the portfolio. This quarter saw remarkable activity with 1,535 new positions added while maintaining all existing holdings, suggesting a strategy focused on expanding market exposure rather than rotating between positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Busy quarter
+1324 buys · −0 exits · 5389 changed
Q4 2025
Busy quarter
+1221 buys · −0 exits · 5280 changed
Q3 2025
Busy quarter
+6523 buys · −0 exits · 0 changed