Ken Griffin
PSIX

Ken Griffin’s Power Solutions International PSIX Stock Holding History

Ken Griffin’s Portfolio PSIX Stock Details PSIX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.39M Sell
39,300
-16,700
-30% -$1.19M ﹤0.01% 5713
2025
Q4 		$3.2M Sell
56,000
-1,800
-3% -$128K ﹤0.01% 5054
2025
Q3 		$5.68M Buy
+57,800
New +$5.13M ﹤0.01% 4133

Other funds holding PSIX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
SA
Situational Awareness San Francisco, California $13.7B AUM 334.5% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
BB
Busey Bank Urbana, Illinois $3.68B AUM 26.6% 1-Year Est. Return
SG Americas Securities
SG Americas Securities New York $179B AUM 65.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Ken Griffin's PSIX Position: Q1 2026 in Review

Ken Griffin increased its Power Solutions International (PSIX) stake by 71% in Q1 2026, buying an estimated $829K and bringing the position to 27,959 shares worth $1.7M. The position accounts for ﹤0.01% of the portfolio, ranked #6444.

Ken Griffin first reported a position in PSIX in Q2 2014 and has held it in 9 quarters since. The position peaked at $8.22M in Q3 2025. 201 funds tracked by Wall St. Rank hold PSIX as of Q1 2026.

  • Ken Griffin held 27,959 shares of Power Solutions International worth $1.7M as of Q1 2026.
  • Ken Griffin bought 11,626 Power Solutions International shares in Q1 2026, an estimated $829K.
  • Power Solutions International made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #6444 holding.
  • Ken Griffin first reported a position in Power Solutions International in Q2 2014 and has held it in 9 quarters since.
  • Ken Griffin's Power Solutions International position peaked at $8.22M in Q3 2025.
  • 201 funds tracked by Wall St. Rank held Power Solutions International as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.