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Avidity Partners Management’s Repligen RGEN Stock Holding History

Avidity Partners Management’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
Q1 		$18.4M Buy
155,600
+105,300
+209% +$14.7M 1.96% 9
2025
Q4 		$8.24M Buy
50,300
+27,000
+116% +$4.23M 2.38% 10
2025
Q3 		$3.11M Sell
23,300
-83,200
-78% -$10.1M 0.71% 31
2025
Q2 		$13.2M Buy
+106,500
New +$13.6M 2.64% 12

Other funds holding RGEN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
UCFA
United Capital Financial Advisors Irving, Texas $16.3B AUM 16.34% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
MC
Maverick Capital Dallas, Texas $8.67B AUM 48.76% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

Avidity Partners Management's RGEN Position: Q1 2026 in Review

Avidity Partners Management increased its Repligen (RGEN) stake by 209% in Q1 2026, buying an estimated $14.7M and bringing the position to 155,600 shares worth $18.4M. The position accounts for 1.96% of the portfolio, ranked #9.

Avidity Partners Management first reported a position in RGEN in Q2 2025 and has held it in 4 quarters since. 441 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • Avidity Partners Management held 155,600 shares of Repligen worth $18.4M as of Q1 2026.
  • Avidity Partners Management bought 105,300 Repligen shares in Q1 2026, an estimated $14.7M.
  • Repligen made up 1.96% of Avidity Partners Management's portfolio in Q1 2026, its #9 holding.
  • Avidity Partners Management first reported a position in Repligen in Q2 2025 and has held it in 4 quarters since.
  • 441 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on Avidity Partners Management's 13F filing for Q1 2026, filed 13 May 2026.