BAMCO Inc
RGEN icon

BAMCO Inc’s Repligen RGEN Stock Holding History

BAMCO Inc’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 		$64.6M Buy
548,346
+3,567
+0.7% +$498K 0.2% 88
2025
Q4 		$89.3M Buy
544,779
+163,101
+43% +$25.5M 0.24% 78
2025
Q3 		$51M Buy
381,678
+107,235
+39% +$13M 0.14% 134
2025
Q2 		$34.1M Buy
274,443
+69,474
+34% +$8.84M 0.09% 167
2025
Q1 		$26.1M Buy
204,969
+44,742
+28% +$6.89M 0.08% 182
2024
Q4 		$23.1M Sell
160,227
-6,792
-4% -$974K 0.06% 189
2024
Q3 		$24.9M Sell
167,019
-5,495
-3% -$788K 0.07% 189
2024
Q2 		$21.7M Sell
172,514
-208,772
-55% -$32.7M 0.06% 195
2024
Q1 		$70.1M Sell
381,286
-64,472
-14% -$12.3M 0.19% 106
2023
Q4 		$80.1M Sell
445,758
-13,026
-3% -$2.03M 0.21% 90
2023
Q3 		$73M Buy
458,784
+99,763
+28% +$16.3M 0.21% 83
2023
Q2 		$50.8M Buy
359,021
+138,047
+62% +$22.1M 0.14% 125
2023
Q1 		$37.2M Buy
220,974
+212,374
+2,469% +$37.9M 0.11% 145
2022
Q4 		$1.46M Buy
8,600
+1,800
+26% +$326K ﹤0.01% 321
2022
Q3 		$1.27M Buy
+6,800
New +$1.43M ﹤0.01% 325

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

BAMCO Inc's RGEN Position: Q1 2026 in Review

BAMCO Inc increased its Repligen (RGEN) stake by 0.65% in Q1 2026, buying an estimated $498K and bringing the position to 548,346 shares worth $64.6M. The position accounts for 0.2% of the portfolio, ranked #88.

BAMCO Inc first reported a position in RGEN in Q3 2022 and has held it in 15 quarters since. The position peaked at $89.3M in Q4 2025. 441 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • BAMCO Inc held 548,346 shares of Repligen worth $64.6M as of Q1 2026.
  • BAMCO Inc bought 3,567 Repligen shares in Q1 2026, an estimated $498K.
  • Repligen made up 0.2% of BAMCO Inc's portfolio in Q1 2026, its #88 holding.
  • BAMCO Inc first reported a position in Repligen in Q3 2022 and has held it in 15 quarters since.
  • BAMCO Inc's Repligen position peaked at $89.3M in Q4 2025.
  • 441 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on BAMCO Inc's 13F filing for Q1 2026, filed 15 May 2026.