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Osterweis Capital Management’s Repligen RGEN Stock Holding History

Osterweis Capital 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 		$10.9M Buy
92,220
+37,585
+69% +$5.25M 0.56% 56
2025
Q4 		$8.95M Sell
54,635
-18,295
-25% -$2.87M 0.38% 68
2025
Q3 		$9.75M Buy
+72,930
New +$8.86M 0.44% 64
2025
Q2 		– Sell
-72,765
Closed -$9.26M – 399
2025
Q1 		$9.26M Buy
72,765
+11,080
+18% +$1.71M 0.46% 67
2024
Q4 		$8.88M Buy
61,685
+8,240
+15% +$1.18M 0.41% 73
2024
Q3 		$7.95M Buy
53,445
+17,410
+48% +$2.5M 0.4% 76
2024
Q2 		$4.54M Buy
+36,035
New +$5.65M 0.23% 84

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

Osterweis Capital Management's RGEN Position: Q1 2026 in Review

Osterweis Capital Management increased its Repligen (RGEN) stake by 69% in Q1 2026, buying an estimated $5.25M and bringing the position to 92,220 shares worth $10.9M. The position accounts for 0.56% of the portfolio, ranked #56.

Osterweis Capital Management first reported a position in RGEN in Q2 2024 and has held it in 7 quarters since. 441 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • Osterweis Capital Management held 92,220 shares of Repligen worth $10.9M as of Q1 2026.
  • Osterweis Capital Management bought 37,585 Repligen shares in Q1 2026, an estimated $5.25M.
  • Repligen made up 0.56% of Osterweis Capital Management's portfolio in Q1 2026, its #56 holding.
  • Osterweis Capital Management first reported a position in Repligen in Q2 2024 and has held it in 7 quarters since.
  • 441 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on Osterweis Capital Management's 13F filing for Q1 2026, filed 15 May 2026.