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Lee Ainslie’s Repligen RGEN Stock Holding History

Lee Ainslie’s Portfolio RGEN Stock Details RGEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$271M Buy
1,984,554
+465,749
+31% +$57.2M 2.39% 16
2026
Q1 		$179M Buy
+1,518,805
New +$212M 2.06% 22
2021
Q2 		– Sell
-1,140
Closed -$222K – 816
2021
Q1 		$222K Buy
+1,140
New +$234K ﹤0.01% 481

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UCFA
United Capital Financial Advisors Irving, Texas $18.2B AUM 22.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Lee Ainslie's RGEN Position: Q2 2026 in Review

Lee Ainslie increased its Repligen (RGEN) stake by 31% in Q2 2026, buying an estimated $57.2M and bringing the position to 1,984,554 shares worth $271M. The position accounts for 2.39% of the portfolio, ranked #16.

Lee Ainslie first reported a position in RGEN in Q1 2021 and has held it in 3 quarters since. 476 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • Lee Ainslie held 1,984,554 shares of Repligen worth $271M as of Q2 2026.
  • Lee Ainslie bought 465,749 Repligen shares in Q2 2026, an estimated $57.2M.
  • Repligen made up 2.39% of Lee Ainslie's portfolio in Q2 2026, its #16 holding.
  • Lee Ainslie first reported a position in Repligen in Q1 2021 and has held it in 3 quarters since.
  • 476 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Maverick Capital's 13F filing for Q2 2026, filed 14 Aug 2026.