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Hedge fund, long-only 13F filer

Citadel Advisors

Citadel Advisors is the multi-strategy investment firm Ken Griffin founded in 1990, running equities, fixed income and macro, credit, commodities and quantitative strategies. Its books are heavily hedged with options, which inflates the notional value a 13F discloses. It discloses US-listed long equity (and some options) positions each quarter on SEC Form 13F — bonds, cash, private businesses and non-US holdings are not in that filing.

174.1BUSDreported value
13,572positions
+33.0BUSDon the prior filing
SPYlargest holding, 4.1%

What does Citadel Advisors hold?

STATE STR SPDR S&P 500 ETF T (SPY) is the largest disclosed position, at 4.1% or 35.7B USD. The 15 largest positions, listed below, make up 28% of the 174.1B USD portfolio.

SEC EDGAR Form 13F-HR, quarter ended 30 June 2026

Top holdings by reported value
PositionValueWeightSharesLast quarter
SPYSTATE STR SPDR S&P 500 ETF T, call option35.7B USD4.1%47.7MAdded
QQQINVESCO QQQ TR, put option26.6B USD3.0%36.1MHeld
QQQINVESCO QQQ TR, call option23.5B USD2.7%31.9MAdded
SPYSTATE STR SPDR S&P 500 ETF T, put option23.3B USD2.7%31.2MHeld
MUMICRON TECHNOLOGY INC, put option22.2B USD2.5%19.3MHeld
MUMICRON TECHNOLOGY INC, call option16.3B USD1.9%14.2MAdded
TSLATESLA INC, call option13.7B USD1.6%32.6MHeld
IVVISHARES TR13.2B USD1.5%17.7MAdded
NVDANVIDIA CORPORATION, call option12.2B USD1.4%60.9MHeld
SNDKSANDISK CORP, put option11.7B USD1.3%5.2MAdded
SMHVANECK ETF TRUST, put option11.6B USD1.3%17.6MAdded
SNDKSANDISK CORP, call option10.3B USD1.2%4.5MAdded
MSFTMICROSOFT CORP, call option9.7B USD1.1%26.0MAdded
TSLATESLA INC, put option9.6B USD1.1%22.8MHeld
AMDADVANCED MICRO DEVICES INC, put option9.4B USD1.1%16.1MAdded

Rows sharing a company name are separate securities of the same issuer — different share classes or option positions, as filed.

References
  1. SEC EDGAR Form 13F-HR, quarterly, up to 45 days delayed. Filings are public records. Ticker mapping via SEC public files and OpenFIGI.
  2. Finazon prior-day close, indicative (IEX-derived, not the official close), some closes dollar-rounded at the source
Citadel Advisors holdings — the largest positions in its latest 13F · The Distributed