Ken Griffin's portfolio
Citadel Advisors · SEC CIK 1423053
Multi-strategy, quantitative, market-neutral.
This filing is 94 days old. Citadel Advisors keeps roughly 62% of its positions in a typical quarter, so about 61% of this book is likely still intact today.
How half-life is computedSnapshot half-life is the number of days after the period end at which half of this specific fund's reported book is expected to have changed, measured from its own past filings. It is a decay estimate, not knowledge of current positions.
Largest holdings, as filed
Top 10 of 6,354 positions. Weights are against the whole filed book. 13F filings cover US-listed holdings only.
| Company | Ticker | Value | % of book | Freshness |
|---|---|---|---|---|
| ISHARES TR | IVV | $13.24B | 7.6% | |
| AMAZON COM INC | AMZN | $2.59B | 1.5% | |
| NVIDIA CORPORATION | NVDA | $2.36B | 1.4% | |
| APPLE INC | AAPL | $2.11B | 1.2% | |
| MICROSOFT CORP | MSFT | $1.41B | 0.8% | |
| ELECTRONIC ARTS INC | EA | $1.21B | 0.7% | |
| WARNER BROS DISCOVERY INC | WBD | $1.19B | 0.7% | |
| ELI LILLY & CO | LLY | $1.13B | 0.7% | |
| BROADCOM INC | AVGO | $1.10B | 0.6% | |
| ALPHABET INC | GOOGL | $1.07B | 0.6% |
Freshness: how likely each position is still held today, from this fund's own turnover history, each position's tenure and the filing's age. Hover a bar for the numbers. Method.
What changed last quarter
Between Q1 2026 and Q2 2026, the largest add was IVV (shares up 335%), now $13.24B; the largest trim was NVDA (shares down 37%); NVDA, IVV, MU no longer appear among the previous quarter's largest positions. All of it computed from the two filings, nothing inferred.
Biggest buys, Q2 2026
Common questions
What are Ken Griffin's biggest holdings?
As of the Q2 2026 13F, the largest reported positions at Citadel Advisors are IVV (7.6% of the book), AMZN (1.5% of the book), NVDA (1.4% of the book).
How big is Citadel Advisors's portfolio?
The latest 13F reports $174.22B across 6,354 US-listed positions. 13F filings cover US-listed holdings only, so non-US positions and shorts are not included.
Does Ken Griffin still hold these positions?
Unknown for certain: a 13F may be filed up to 45 days after quarter end. Based on Citadel Advisors's own filing history, the fund keeps roughly 62% of positions in a typical quarter, so at 94 days since the period end roughly 61% of this book is likely intact. The snapshot half-life for this fund is about 133 days.
What did Ken Griffin buy and sell last quarter?
Between Q1 2026 and Q2 2026, the largest add was IVV (shares up 335%), now $13.24B; the largest trim was NVDA (shares down 37%); NVDA, IVV, MU no longer appear among the previous quarter's largest positions. All of it computed from the two filings, nothing inferred.
Funds with overlapping books
Every 13F we hold, quarter by quarter
Each filing has its own page: the whole book as filed that quarter and what changed from the filing before.
Inside the app: the full book for Citadel Advisors, quarter on quarter buys and sells, consensus across 140+ funds and copy-to-watchlist.
Source: SEC EDGAR 13F filings. Values are as filed and cover US-listed positions only. A 13F may be filed up to 45 days after the quarter ends, so positions can change before the filing is even public; the freshness figures above quantify that lag instead of hiding it. Educational information, not financial advice.