What Ken Griffin Bought and Sold in Q2 2026

As of the Q2 2026 13F, filed 14 August 2026

Citadel Advisors LLC, led by Ken Griffin, significantly increased its call option position in the STATE STR SPDR S&P 500 ETF T during the second quarter of 2026, adding 20.7 million shares, a 76.7% increase, making it the largest reported position at 4.07% of the reported total. This 13F-HR filing, covering the period ending June 30, 2026, and filed on August 14, 2026, reports a total value of $875.10 billion across 13575 positions. It is important to note that this filing combines Citadel Advisors (the hedge fund) with Citadel Securities GP LLC, its market-making arm, meaning positions may represent market-making inventory or hedges rather than investment views. Furthermore, 77.21% of the reported total is option notional, not stock ownership, comprising 3693 put options and 4134 call options.

Notable Buys

Among the largest increases and new positions by share count, Citadel Advisors LLC added 20.7 million shares (+76.7%) to its call option position in STATE STR SPDR S&P 500 ETF T, which represents 4.07% of the reported total. The fund also increased its position in ISHARES TR by 13.6 million shares (+335.3%), accounting for 1.51% of the reported total. A put option position against VANECK ETF TRUST saw an increase of 13.0 million shares (+284.4%), representing 1.32% of the reported total. Another put option position against ISHARES TR was increased by 12.7 million shares (+67.6%), making up 0.31% of the reported total. The fund added 12.4 million shares (+63.6%) to its call option position in INVESCO QQQ TR, which is 2.68% of the reported total. A call option position in MSFT increased by 7.0 million shares (+37%), representing 1.11% of the reported total, while a put option position against MSFT increased by 6.4 million shares (+60.5%), making up 0.72% of the reported total. Finally, a call option position in INTC saw an increase of 5.9 million shares (+31.9%), accounting for 0.39% of the reported total.

Notable Sells

Significant reductions and exited positions by share count include a put option position against NFLX, which was reduced by 11.1 million shares (-26.9%), representing 0.25% of the reported total. A call option position in SPDR GOLD TR was reduced by 8.6 million shares (-39.4%), accounting for 0.56% of the reported total. The fund reduced its position in NVDA by 6.8 million shares (-36.7%), which is 0.27% of the reported total. A put option position against STATE STR SPDR S&P 500 ETF T was reduced by 6.0 million shares (-16.2%), representing 2.66% of the reported total. A call option position in NVDA was reduced by 6.0 million shares (-9%), making up 1.39% of the reported total, and a put option position against NVDA was reduced by 5.8 million shares (-11.2%), representing 1.05% of the reported total. A put option position against SPDR GOLD TR was reduced by 4.2 million shares (-33.8%), accounting for 0.34% of the reported total. Lastly, a call option position in TSLA was reduced by 3.8 million shares (-10.5%), representing 1.57% of the reported total.

Portfolio Concentration

The largest reported positions in the filing indicate a concentration in certain areas. The call option position in STATE STR SPDR S&P 500 ETF T represents 4.07% of the reported total. A put option position against INVESCO QQQ TR accounts for 3.03% of the reported total. Another call option position in INVESCO QQQ TR makes up 2.68% of the reported total. A put option position against STATE STR SPDR S&P 500 ETF T is 2.66% of the reported total. A put option position against MU represents 2.54% of the reported total, and a call option position in MU accounts for 1.87% of the reported total. These figures cover only the largest 60 positions, which represent 49.84% of the reported value, and do not reflect the entire portfolio of 13575 positions.

A 13F filing provides a snapshot of institutional investment managers' equity holdings at the end of a calendar quarter, with the report filed 45 days after the quarter's end.