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RTW Investments’s Repligen RGEN Stock Holding History

RTW Investments’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 		$169M Buy
1,240,637
+34,637
+3% +$4.26M 1.45% 25
2026
Q1 		$142M Buy
1,206,000
+142,000
+13% +$19.8M 1.41% 23
2025
Q4 		$174M Buy
+1,064,000
New +$167M 1.75% 17

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
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
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

RTW Investments's RGEN Position: Q2 2026 in Review

RTW Investments increased its Repligen (RGEN) stake by 2.9% in Q2 2026, buying an estimated $4.26M and bringing the position to 1,240,637 shares worth $169M. The position accounts for 1.45% of the portfolio, ranked #25.

RTW Investments first reported a position in RGEN in Q4 2025 and has held it in 3 quarters since. The position peaked at $174M in Q4 2025. 480 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • RTW Investments held 1,240,637 shares of Repligen worth $169M as of Q2 2026.
  • RTW Investments bought 34,637 Repligen shares in Q2 2026, an estimated $4.26M.
  • Repligen made up 1.45% of RTW Investments's portfolio in Q2 2026, its #25 holding.
  • RTW Investments first reported a position in Repligen in Q4 2025 and has held it in 3 quarters since.
  • RTW Investments's Repligen position peaked at $174M in Q4 2025.
  • 480 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on RTW Investments's 13F filing for Q2 2026, filed 14 Aug 2026.