Group One Trading
RGEN icon

Group One Trading’s Repligen RGEN Stock Holding History

Group One Trading’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 		$23.6K Hold
200
– – ﹤0.01% 5847
2025
Q4 		$32.8K Sell
200
-8,200
-98% -$1.28M ﹤0.01% 5939
2025
Q3 		$1.12M Buy
8,400
+6,600
+367% +$802K ﹤0.01% 2905
2025
Q2 		$224K Buy
1,800
+1,700
+1,700% +$216K ﹤0.01% 4224
2025
Q1 		$12.7K Sell
100
-6,000
-98% -$924K ﹤0.01% 6107
2024
Q4 		$878K Sell
6,100
-2,200
-27% -$315K ﹤0.01% 2690
2024
Q3 		$1.24M Sell
8,300
-6,000
-42% -$860K ﹤0.01% 2122
2024
Q2 		$1.8M Sell
14,300
-600
-4% -$94K 0.01% 1536
2024
Q1 		$2.74M Buy
14,900
+1,600
+12% +$305K 0.01% 1260
2023
Q4 		$2.39M Buy
13,300
+13,200
+13,200% +$2.05M 0.01% 1715
2023
Q3 		$15.9K Sell
100
-24,400
-100% -$3.99M ﹤0.01% 6058
2023
Q2 		$3.47M Buy
24,500
+8,900
+57% +$1.43M 0.01% 1248
2023
Q1 		$2.63M Buy
15,600
+3,300
+27% +$589K 0.01% 1310
2022
Q4 		$2.08M Sell
12,300
-9,100
-43% -$1.65M ﹤0.01% 1780
2022
Q3 		$4M Buy
21,400
+21,200
+10,600% +$4.47M 0.01% 1338
2022
Q2 		$32K Sell
200
-1,700
-89% -$269K ﹤0.01% 5938
2022
Q1 		$357K Sell
1,900
-7,500
-80% -$1.42M ﹤0.01% 4197
2021
Q4 		$2.49M Sell
9,400
-3,100
-25% -$835K ﹤0.01% 2361
2021
Q3 		$3.61M Buy
12,500
+6,700
+116% +$1.72M ﹤0.01% 2038
2021
Q2 		$1.16M Buy
5,800
+1,200
+26% +$233K ﹤0.01% 3243
2021
Q1 		$894K Sell
4,600
-7,800
-63% -$1.6M ﹤0.01% 3369
2020
Q4 		$2.38M Sell
12,400
-22,200
-64% -$4.04M ﹤0.01% 1905
2020
Q3 		$5.11M Buy
34,600
+26,300
+317% +$3.76M 0.02% 901
2020
Q2 		$1.03M Sell
8,300
-37,500
-82% -$4.41M ﹤0.01% 1994
2020
Q1 		$4.42M Buy
45,800
+37,100
+426% +$3.58M 0.04% 598
2019
Q4 		$805K Sell
8,700
-25,500
-75% -$2.14M 0.01% 2061
2019
Q3 		$2.62M Sell
34,200
-15,800
-32% -$1.38M 0.02% 998
2019
Q2 		$4.3M Buy
50,000
+44,700
+843% +$3.05M 0.04% 615
2019
Q1 		$313K Sell
5,300
-11,400
-68% -$656K ﹤0.01% 2348
2018
Q4 		$881K Sell
16,700
-19,400
-54% -$1.14M 0.01% 1599
2018
Q3 		$2M Buy
36,100
+25,800
+250% +$1.33M 0.02% 1163
2018
Q2 		$485K Sell
10,300
-11,200
-52% -$461K ﹤0.01% 2319
2018
Q1 		$778K Sell
21,500
-3,600
-14% -$127K 0.01% 1699
2017
Q4 		$911K Sell
25,100
-6,600
-21% -$239K 0.01% 1786
2017
Q3 		$1.22M Sell
31,700
-7,000
-18% -$293K 0.01% 1412
2017
Q2 		$1.6M Buy
38,700
+10,200
+36% +$388K 0.02% 1098
2017
Q1 		$1M Buy
28,500
+15,500
+119% +$491K 0.01% 1337
2016
Q4 		$401K Sell
13,000
-22,900
-64% -$708K ﹤0.01% 1924
2016
Q3 		$1.08M Buy
35,900
+5,700
+19% +$172K 0.01% 1226
2016
Q2 		$826K Buy
30,200
+2,400
+9% +$61.4K 0.01% 1376
2016
Q1 		$746K Sell
27,800
-17,100
-38% -$418K 0.01% 1400
2015
Q4 		$1.27M Buy
44,900
+1,700
+4% +$49K 0.02% 1146
2015
Q3 		$1.2M Buy
43,200
+14,000
+48% +$506K 0.02% 1109
2015
Q2 		$1.21M Buy
29,200
+12,800
+78% +$469K 0.02% 1076
2015
Q1 		$498K Sell
16,400
-47,200
-74% -$1.22M 0.01% 1601
2014
Q4 		$1.26M Buy
63,600
+11,900
+23% +$266K 0.02% 927
2014
Q3 		$1.03M Buy
51,700
+29,900
+137% +$629K 0.02% 1097
2014
Q2 		$497K Buy
21,800
+15,400
+241% +$274K 0.01% 1645
2014
Q1 		$82K Sell
6,400
-18,800
-75% -$270K ﹤0.01% 3234
2013
Q4 		$344K Sell
25,200
-35,800
-59% -$427K 0.01% 1953
2013
Q3 		$676K Buy
61,000
+32,500
+114% +$323K 0.01% 1334
2013
Q2 		$235K Buy
+28,500
New +$239K 0.01% 2028

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

Group One Trading's RGEN Position: Q4 2025 in Review

Group One Trading sold out of Repligen (RGEN) in Q4 2025, closing a stake of 299 shares — an estimated $46.8K sold.

Group One Trading first reported a position in RGEN in Q2 2013 and held it in 19 quarters. The position peaked at $1.28M in Q4 2021. 473 funds tracked by Wall St. Rank hold RGEN as of Q4 2025.

  • Group One Trading reported no remaining Repligen position as of Q4 2025 after selling out during the quarter.
  • Group One Trading sold 299 Repligen shares in Q4 2025, an estimated $46.8K.
  • Group One Trading first reported a position in Repligen in Q2 2013 and held it in 19 quarters.
  • Group One Trading's Repligen position peaked at $1.28M in Q4 2021.
  • 473 funds tracked by Wall St. Rank held Repligen as of Q4 2025.

Based on Group One Trading's 13F filing for Q4 2025, filed 12 Feb 2026.