How We Invest

13F FILER • KEN GRIFFIN

Citadel Advisors

Ken Griffin — CITADEL ADVISORS LLC

No writing by this manager has been read and indexed yet, so this page carries the filings only. Holdings come straight from the Form 13F-HR on EDGAR.

13575

Positions

$875.1B

Reported Value

22.7%

In Top 10

—

Claims Indexed

Largest reported positions

CITADEL ADVISORS LLC • CIK 0001423053 • 2026-06-30 • FILED 2026-08-14

WHAT CHANGED THIS QUARTER

In its Q2 2026 13F, filed Aug 14, 2026, Citadel Advisors reported 13,575 positions worth $171.8B in US-listed stock. With 13,575 positions and only 22.7% in the ten largest, this is a diffuse book, where single lines are inventory rather than convictions.

It opened 2,668 new positions, and exited 1,950, the largest stock exits being Ishares Tr ($327.5M last quarter), Coterra Energy Inc ($216.4M last quarter) and Clearwater Analytics Hldgs I ($199.6M last quarter).

Among positions it already held, the biggest increase by share count was Ishares Tr (+335%).

Largest reported positions, quarter ended 2026-06-30
IssuerValueWeightShares QoQ
STATE STR SPDR S&P 500 ETF T (Call)$35.7B4.1%+77%
INVESCO QQQ TR (Put)$26.6B3.0%+1%
INVESCO QQQ TR (Call)$23.5B2.7%+64%
STATE STR SPDR S&P 500 ETF T (Put)$23.3B2.7%-16%
MICRON TECHNOLOGY INC (Put)$22.2B2.5%+15%
MICRON TECHNOLOGY INC (Call)$16.3B1.9%+37%
TESLA INC (Call)$13.7B1.6%-11%
ISHARES TR$13.2B1.5%+335%
NVIDIA CORPORATION (Call)$12.2B1.4%-9%
SANDISK CORP (Put)$11.7B1.3%+109%
VANECK ETF TRUST (Put)$11.6B1.3%+284%
SANDISK CORP (Call)$10.3B1.2%+29%
MICROSOFT CORP (Call)$9.7B1.1%+37%
TESLA INC (Put)$9.6B1.1%-10%
ADVANCED MICRO DEVICES INC (Put)$9.4B1.1%+26%
NVIDIA CORPORATION (Put)$9.2B1.1%-11%
APPLE INC (Call)$9.0B1.0%-2%
ADVANCED MICRO DEVICES INC (Call)$9.0B1.0%+11%
META PLATFORMS INC (Call)$8.7B1.0%+16%
ISHARES TR (Put)$7.8B0.9%+23%

20 of 13,575 positions. 80.1% of reported value is options, where the figure is the notional value of the underlying rather than money spent. $2.4B of the reported value is Section 13(f) debt — convertible notes and the like — which the form covers alongside equities. A 13F covers long US-listed positions at a quarter end only — no shorts, leverage, cash, ordinary bonds or private holdings — and is 45 days old on publication.

EXITS

  • Ishares Tr$327.5M last quarter
  • Coterra Energy Inc$216.4M last quarter
  • Clearwater Analytics Hldgs I$199.6M last quarter
  • Terns Pharmaceuticals Inc$169.7M last quarter
  • Globus Med Inc$169.4M last quarter

QUESTIONS PEOPLE ASK

What are Citadel Advisors' largest holdings?

OPEN
As of Jun 30, 2026, the largest stock position is Ishares Tr (1.5%). With 13,575 positions and only 22.7% in the ten largest, this is a diffuse book, where single lines are inventory rather than convictions.

How big is Citadel Advisors' 13F portfolio?

OPEN
The Q2 2026 13F, filed Aug 14, 2026, reports 13,575 positions worth $875.1B. The ten largest make up 22.7% of it. 80.1% of that value is options, reported at the notional value of the underlying rather than money spent.

What did Citadel Advisors buy and sell in Q2 2026?

OPEN
It opened 2,668 new positions, and exited 1,950, the largest stock exits being Ishares Tr ($327.5M last quarter), Coterra Energy Inc ($216.4M last quarter) and Clearwater Analytics Hldgs I ($199.6M last quarter). Among positions it already held, the biggest increase by share count was Ishares Tr (+335%).

When is Citadel Advisors' next 13F due?

OPEN
The Q3 2026 13F is due Nov 16, 2026. Forty-five days after the quarter ends is November 14, 2026 (Saturday), so the deadline moves to the next business day. Ken Griffin's filing usually lands close to the deadline.

Filers with overlapping books