Ken Griffin
CON

Ken Griffin’s Concentra Group Holdings CON Stock Holding History

Ken Griffin’s Portfolio CON Stock Details CON Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$26.4M Sell
1,230,675
-1,020,054
-45% -$22.7M ﹤0.01% 1992
2025
Q4 		$44.3M Buy
2,250,729
+1,061,587
+89% +$21.2M 0.01% 1535
2025
Q3 		$24.9M Sell
1,189,142
-391,830
-25% -$8.36M ﹤0.01% 2063
2025
Q2 		$32.5M Buy
1,580,972
+805,480
+104% +$17.2M 0.01% 1601
2025
Q1 		$16.8M Sell
775,492
-1,200,534
-61% -$26.4M ﹤0.01% 2223
2024
Q4 		$39.1M Buy
1,976,026
+1,442,740
+271% +$29.8M 0.01% 1503
2024
Q3 		$11.9M Buy
+533,286
New +$12.3M ﹤0.01% 2657

Other funds holding CON

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Thrivent Financial for Lutherans
Thrivent Financial for Lutherans Minneapolis, Minnesota $52.5B AUM 27.12% 1-Year Est. Return

Ken Griffin's CON Position: Q1 2026 in Review

Ken Griffin reduced its Concentra Group Holdings (CON) stake by 45% in Q1 2026, selling an estimated $22.7M and leaving 1,230,675 shares worth $26.4M. The position accounts for ﹤0.01% of the portfolio, ranked #1992.

Ken Griffin first reported a position in CON in Q3 2024 and has held it in 7 quarters since. The position peaked at $44.3M in Q4 2025. 279 funds tracked by Wall St. Rank hold CON as of Q1 2026.

  • Ken Griffin held 1,230,675 shares of Concentra Group Holdings worth $26.4M as of Q1 2026.
  • Ken Griffin sold 1,020,054 Concentra Group Holdings shares in Q1 2026, an estimated $22.7M.
  • Concentra Group Holdings made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #1992 holding.
  • Ken Griffin first reported a position in Concentra Group Holdings in Q3 2024 and has held it in 7 quarters since.
  • Ken Griffin's Concentra Group Holdings position peaked at $44.3M in Q4 2025.
  • 279 funds tracked by Wall St. Rank held Concentra Group Holdings as of Q1 2026.

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