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Ken Griffin portfolio: holdings and latest trades

The stocks Citadel Advisors reported in its latest 13F filing, for Q2 2026: 6354 positions worth about $174.2B, what was bought and sold in the quarter, and who Griffin is.

Data updated August 14, 2026 (13F for Q2 2026)

13F portfolio value
$174.2B
Positions
6354
Top 10 holdings
16%
Change in value vs previous quarter
+23.5%

Ken Griffin top holdings (Q2 2026)

#Stock% of portfolioValueLast quarter
1IVV iShares Core S&P 500 ETF7.6%$13.2BAdded 335%
2AMZN Amazon.Com Inc1.5%$2.6BAdded 34%
3NVDA Nvidia Corp1.4%$2.4BTrimmed 37%
4AAPL Apple Inc1.2%$2.1BAdded 40%
5MSFT Microsoft Corp0.8%$1.4BAdded 43%
6WBD Warner Bros Discovery Inc0.7%$1.2BAdded 52%
7LLY Eli Lilly & Co0.7%$1.1BAdded 291%
8AVGO Broadcom Inc0.6%$1.1BTrimmed 11%
9GOOGL Alphabet Inc-Cl A0.6%$1.1BAdded 5%
10BLK Blackrock Inc0.6%$1.1BAdded 56%
11AMD Advanced Micro Devices0.5%$929MAdded 155%
12GOOG Alphabet Inc-Cl C0.5%$899MAdded 6%
13SPCX Space Exploration Techn-Cl A0.5%$876MNew
14ABBV Abbvie Inc0.5%$798MAdded 547%
15AMAT Applied Materials Inc0.4%$782MTrimmed 16%
16ABT Abbott Laboratories0.4%$780MAdded 349%
17KLAC Kla Corp0.4%$767MAdded 571%
18HWM Howmet Aerospace Inc0.4%$758MAdded 177%
19MA Mastercard Inc - A0.4%$754MAdded 30%
20JPM Jpmorgan Chase & Co0.4%$725MTrimmed 9%
21ORCL Oracle Corp0.4%$697MAdded 107%
22MU Micron Technology Inc0.4%$693MTrimmed 87%
23ORLY O'Reilly Automotive Inc0.4%$646MAdded 45%
24KO Coca-Cola Co/The0.4%$638MAdded 22%
25NFLX Netflix Inc0.4%$631MAdded 412%
26META Meta Platforms Inc-Class A0.4%$631MTrimmed 39%
27WMT Walmart Inc0.4%$624MAdded 353%
28LRCX Lam Research Corp0.4%$616MAdded 28%
29TXN Texas Instruments Inc0.4%$613MAdded 459%
30UAL United Airlines Holdings Inc0.3%$589MAdded 6%

Showing the 30 largest of 6354 positions.

What Griffin bought and sold in Q2 2026

Bought or added

  • IVV iShares Core S&P 500 ETFAdded 335%
  • SPCX Space Exploration Techn-Cl ANew
  • LLY Eli Lilly & CoAdded 291%
  • ABBV Abbvie IncAdded 547%
  • AMZN Amazon.Com IncAdded 34%
  • KLAC Kla CorpAdded 571%
  • — Seagate Technology Hldngs PlAdded 582%
  • — Electronic Arts IncAdded 103%
  • ABT Abbott LaboratoriesAdded 349%
  • AAPL Apple IncAdded 40%

Sold or reduced

  • MU Micron Technology IncTrimmed 87%
  • TSM Taiwan Semiconductor-Sp ADRTrimmed 87%
  • DIA Ss SPDR Dow Jones Indus AvgTrimmed 92%
  • NVDA Nvidia CorpTrimmed 37%
  • SNDK Sandisk CorpTrimmed 89%
  • — Western Digital Corp (Notes)Sold out
  • MAR Marriott International -Cl ATrimmed 89%
  • GE General ElectricTrimmed 72%
  • CAH Cardinal Health IncTrimmed 92%
  • MS Morgan StanleyTrimmed 81%

Changes in number of shares against the 13F for the previous quarter (Q1 2026), largest first.

Who is Ken Griffin

Role
Founder and CEO of Citadel
Fund
Citadel Advisors, founded 1990
Investment style
Multi-strategy hedge fund: thousands of positions, many of them hedged.
Known for
Trading from his Harvard dorm room in 1987

Ken Griffin began trading convertible bonds from his Harvard dorm room in 1987 and founded Citadel in 1990. It grew into one of the largest and most profitable hedge funds in the world, alongside the separate market maker Citadel Securities.

Citadel runs many independent strategies, so its 13F lists thousands of long positions and options that are often hedged elsewhere: it shows activity rather than a single view.

  • •Trading from his Harvard dorm room in 1987
  • •One of the largest multi-strategy hedge funds
  • •Citadel Securities, a major market maker

How to read 13F data

A 13F filing lists the US-listed stocks, ETFs and some options a manager held at the end of a quarter. It is filed up to 45 days after the quarter ends, so positions may have changed since. It does not show short positions, bonds, cash, foreign-listed shares or private investments, so for many funds it is only part of the picture.

Questions

What stocks does Ken Griffin own?

According to the 13F filing of Citadel Advisors for Q2 2026 (period ending June 30, 2026), the largest holdings were iShares Core S&P 500 ETF (IVV) 7.6%, Amazon.Com Inc (AMZN) 1.5%, Nvidia Corp (NVDA) 1.4%, Apple Inc (AAPL) 1.2%, Microsoft Corp (MSFT) 0.8%, out of 6354 positions worth about $174.2B.

What did Griffin buy and sell last quarter?

New or larger positions in Q2 2026: IVV, SPCX, LLY, ABBV, AMZN, KLAC. Sold or reduced: MU, TSM, DIA, NVDA, SNDK, Western Digital Corp (Notes). Changes are measured in shares against the previous quarter’s filing.

How up to date is Citadel Advisors’s portfolio?

13F filings are due within 45 days after each quarter ends. This page shows the filing made on August 14, 2026 for the quarter ended June 30, 2026; the fund may have traded since.

What does a 13F filing leave out?

A 13F filing lists the US-listed stocks, ETFs and some options a manager held at the end of a quarter. It is filed up to 45 days after the quarter ends, so positions may have changed since. It does not show short positions, bonds, cash, foreign-listed shares or private investments, so for many funds it is only part of the picture.

Other famous investors

Source: SEC Form 13F-HR filings via EDGAR. Holdings are as reported by the manager for the quarter shown and may have changed since. Educational content, not investment advice: MEDGE Capital does not recommend buying or selling any security. Risk disclaimer.