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
2025
Q3 		– Sell
-100
Closed -$12.4K – 9030
2025
Q2 		$12.4K Buy
+100
New +$12.7K ﹤0.01% 6584
2025
Q1 		– Sell
-10,500
Closed -$1.51M – 8259
2024
Q4 		$1.51M Buy
10,500
+7,800
+289% +$1.12M ﹤0.01% 2167
2024
Q3 		$402K Buy
+2,700
New +$387K ﹤0.01% 3023
2024
Q2 		– Sell
-400
Closed -$73.6K – 7364
2024
Q1 		$73.6K Sell
400
-700
-64% -$133K ﹤0.01% 4409
2023
Q4 		$198K Sell
1,100
-8,900
-89% -$1.39M ﹤0.01% 3871
2023
Q3 		$1.59M Buy
10,000
+9,500
+1,900% +$1.55M 0.01% 1844
2023
Q2 		$70.7K Buy
+500
New +$80.2K ﹤0.01% 4959
2023
Q1 		– Sell
-100
Closed -$16.9K – 7830
2022
Q4 		$16.9K Buy
+100
New +$18.1K ﹤0.01% 5702
2022
Q2 		– Sell
-5,100
Closed -$959K – 8407
2022
Q1 		$959K Sell
5,100
-3,900
-43% -$741K ﹤0.01% 3120
2021
Q4 		$2.38M Buy
9,000
+4,500
+100% +$1.21M ﹤0.01% 2405
2021
Q3 		$1.3M Buy
4,500
+1,300
+41% +$334K ﹤0.01% 3122
2021
Q2 		$639K Sell
3,200
-20,500
-86% -$3.98M ﹤0.01% 3939
2021
Q1 		$4.61M Sell
23,700
-3,000
-11% -$615K 0.01% 1589
2020
Q4 		$5.12M Buy
26,700
+19,800
+287% +$3.6M 0.01% 1262
2020
Q3 		$1.02M Sell
6,900
-5,700
-45% -$815K ﹤0.01% 2175
2020
Q2 		$1.56M Sell
12,600
-48,000
-79% -$5.65M 0.01% 1651
2020
Q1 		$5.85M Sell
60,600
-4,400
-7% -$425K 0.05% 463
2019
Q4 		$6.01M Buy
65,000
+53,300
+456% +$4.48M 0.04% 572
2019
Q3 		$897K Sell
11,700
-25,600
-69% -$2.24M 0.01% 1830
2019
Q2 		$3.21M Buy
37,300
+20,900
+127% +$1.42M 0.03% 778
2019
Q1 		$969K Buy
16,400
+7,500
+84% +$431K 0.01% 1431
2018
Q4 		$469K Buy
8,900
+8,700
+4,350% +$510K ﹤0.01% 2023
2018
Q3 		$11K Sell
200
-23,700
-99% -$1.22M ﹤0.01% 4627
2018
Q2 		$1.12M Sell
23,900
-20,600
-46% -$848K 0.01% 1622
2018
Q1 		$1.61M Buy
44,500
+28,900
+185% +$1.02M 0.02% 1157
2017
Q4 		$566K Sell
15,600
-9,000
-37% -$326K ﹤0.01% 2152
2017
Q3 		$943K Buy
24,600
+14,100
+134% +$591K 0.01% 1606
2017
Q2 		$435K Sell
10,500
-15,400
-59% -$585K ﹤0.01% 2071
2017
Q1 		$912K Buy
25,900
+1,900
+8% +$60.2K 0.01% 1398
2016
Q4 		$740K Sell
24,000
-7,600
-24% -$235K 0.01% 1517
2016
Q3 		$954K Sell
31,600
-40,200
-56% -$1.21M 0.01% 1311
2016
Q2 		$1.96M Buy
71,800
+27,900
+64% +$713K 0.02% 836
2016
Q1 		$1.18M Sell
43,900
-9,200
-17% -$225K 0.02% 1067
2015
Q4 		$1.5M Buy
53,100
+10,300
+24% +$297K 0.02% 1043
2015
Q3 		$1.19M Buy
42,800
+15,700
+58% +$567K 0.02% 1114
2015
Q2 		$1.12M Buy
27,100
+23,300
+613% +$854K 0.02% 1132
2015
Q1 		$115K Sell
3,800
-65,200
-94% -$1.69M ﹤0.01% 2811
2014
Q4 		$1.37M Buy
69,000
+27,300
+65% +$610K 0.02% 863
2014
Q3 		$830K Buy
41,700
+14,000
+51% +$295K 0.01% 1238
2014
Q2 		$631K Buy
27,700
+8,700
+46% +$155K 0.01% 1463
2014
Q1 		$244K Buy
19,000
+4,900
+35% +$70.3K ﹤0.01% 2277
2013
Q4 		$192K Sell
14,100
-45,300
-76% -$541K ﹤0.01% 2477
2013
Q3 		$659K Buy
59,400
+3,500
+6% +$34.8K 0.01% 1368
2013
Q2 		$461K Buy
+55,900
New +$470K 0.01% 1422

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.