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SEC Form 13F · Institutional holdings

Citadel Advisors (Ken Griffin) — 13F portfolio holdings

Citadel Advisors (Ken Griffin) reported 13,575 equity positions with a combined reported value of $875.10B in its Q2 2026 Form 13F filing. The ten largest of those positions account for 22.7%of the filing’s reported value.

Most recent period on file: 30 Jun 2026 (Q2 2026) · 9 quarters on file · 13F is due 45 days after quarter end

Reported value
$875.10B
13F positions, Q2 2026
Positions
13,575
Distinct holdings in the filing
Top 10 share
22.7%
Broadly distributed
Quarters on file
9
Through Q2 2026

Ten largest reported positions

Top 10 of 13,575 positions by reported value · Q2 2026
Ten largest reported positions held by Citadel Advisors (Ken Griffin) as of 30 Jun 2026
#SecurityCUSIPClassReported valueSharesWeight
1STATE STR SPDR S&P 500 ETF T78462F103TR UNIT$35.66B47.75M4.07%
2INVESCO QQQ TR46090E103UNIT SER 1$26.55B36.06M3.03%
3INVESCO QQQ TR46090E103UNIT SER 1$23.49B31.90M2.68%
4STATE STR SPDR S&P 500 ETF T78462F103TR UNIT$23.27B31.15M2.66%
5MICRON TECHNOLOGY INC595112103COM$22.25B19.28M2.54%
6MICRON TECHNOLOGY INC595112103COM$16.34B14.16M1.87%
7TESLA INC88160R101COM$13.70B32.56M1.57%
8ISHARES TR464287200CORE S&P500 ETF$13.24B17.68M1.51%
9NVIDIA CORPORATION67066G104COM$12.19B60.90M1.39%
10SANDISK CORP80004C200COM$11.72B5.16M1.34%

The full 13,575-position filing, quarter-over-quarter position changes, concentration analysis and cross-fund security search are in the Fund Tracker dashboard.

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Filing periods on file

9 quarters

Rock Group holds Citadel Advisors (Ken Griffin)’s 13F filings for Q2 2026, Q1 2026, Q4 2025, Q3 2025, Q2 2025, Q1 2025, Q4 2024, Q3 2024, Q2 2024. Period-over-period comparison — positions added, exited and resized — is available in the dashboard.

Other institutions

Browse all 13F filers on file, or read the Fund Tracker documentation for what Form 13F does and does not disclose.

Source. Derived from SEC Form 13F-HR filings retrieved from EDGAR. Rock Group is not affiliated with, endorsed by, or acting on behalf of any institution or fund named on this page.

Timing. A 13F reports holdings as of the quarter end and is due 45 days later, so a position shown here can be several months old. It is a point-in-time snapshot and does not show trades made after the quarter closed. Filers may also amend earlier filings, which restates history — a figure that changes between visits is an amendment, not an error.

Not advice. This page is published for research and informational purposes only. It is not investment advice, not an offer or solicitation to buy or sell any security, and not a recommendation of any institution, fund or strategy. Figures are provided without warranty of accuracy or completeness — verify against the original filing before relying on any of them.