Russell Investments Group
RGEN icon

Russell Investments Group’s Repligen RGEN Stock Holding History

Russell Investments Group’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
Q2 		$3.81M Sell
27,957
-30,246
-52% -$3.72M ﹤0.01% 1685
2026
Q1 		$6.86M Sell
58,203
-677
-1% -$94.6K 0.01% 1154
2025
Q4 		$9.65M Buy
58,880
+1,198
+2% +$188K 0.01% 929
2025
Q3 		$7.71M Sell
57,682
-5,692
-9% -$691K 0.01% 1041
2025
Q2 		$7.88M Sell
63,374
-20,500
-24% -$2.61M 0.01% 955
2025
Q1 		$10.7M Buy
83,874
+25,702
+44% +$3.96M 0.01% 793
2024
Q4 		$8.37M Buy
58,172
+669
+1% +$95.9K 0.01% 899
2024
Q3 		$8.56M Buy
57,503
+17,475
+44% +$2.51M 0.01% 901
2024
Q2 		$5.05M Buy
40,028
+4,894
+14% +$767K 0.01% 1145
2024
Q1 		$6.46M Buy
35,134
+1,746
+5% +$333K 0.01% 1047
2023
Q4 		$6.01M Sell
33,388
-5,279
-14% -$822K 0.01% 1045
2023
Q3 		$6.15M Sell
38,667
-2,409
-6% -$394K 0.01% 989
2023
Q2 		$5.79M Sell
41,076
-282
-0.7% -$45.2K 0.01% 1030
2023
Q1 		$6.96M Sell
41,358
-5,202
-11% -$928K 0.01% 942
2022
Q4 		$7.88M Sell
46,560
-6,481
-12% -$1.18M 0.02% 860
2022
Q3 		$9.92M Sell
53,041
-3,742
-7% -$789K 0.02% 747
2022
Q2 		$9.22M Sell
56,783
-1,044
-2% -$165K 0.02% 809
2022
Q1 		$10.9M Sell
57,827
-11,887
-17% -$2.26M 0.02% 802
2021
Q4 		$18.5M Buy
69,714
+5,707
+9% +$1.54M 0.03% 641
2021
Q3 		$18.5M Sell
64,007
-19,613
-23% -$5.03M 0.03% 628
2021
Q2 		$16.7M Sell
83,620
-139
-0.2% -$27K 0.03% 679
2021
Q1 		$16.3M Buy
83,759
+18,639
+29% +$3.82M 0.03% 681
2020
Q4 		$12.5M Sell
65,120
-31,725
-33% -$5.77M 0.02% 728
2020
Q3 		$14.3M Buy
96,845
+8,674
+10% +$1.24M 0.03% 604
2020
Q2 		$10.9M Sell
88,171
-28,965
-25% -$3.41M 0.02% 693
2020
Q1 		$11.3M Buy
117,136
+4,669
+4% +$451K 0.03% 601
2019
Q4 		$10.4M Buy
112,467
+6,102
+6% +$513K 0.02% 836
2019
Q3 		$8.16M Buy
106,365
+12,328
+13% +$1.08M 0.02% 952
2019
Q2 		$8.08M Sell
94,037
-9,741
-9% -$664K 0.02% 984
2019
Q1 		$6.13M Sell
103,778
-1,995
-2% -$115K 0.01% 1133
2018
Q4 		$5.58M Sell
105,773
-58,275
-36% -$3.42M 0.01% 1087
2018
Q3 		$9.1M Sell
164,048
-28,202
-15% -$1.45M 0.02% 988
2018
Q2 		$9.04M Sell
192,250
-4,062
-2% -$167K 0.02% 970
2018
Q1 		$7.1M Buy
196,312
+79,653
+68% +$2.8M 0.01% 1164
2017
Q4 		$4.21M Sell
116,659
-6,157
-5% -$223K 0.01% 1441
2017
Q3 		$4.71M Sell
122,816
-27,885
-19% -$1.17M 0.01% 1305
2017
Q2 		$6.25M Buy
150,701
+46,815
+45% +$1.78M 0.01% 1123
2017
Q1 		$3.66M Sell
103,886
-47,610
-31% -$1.51M 0.01% 1404
2016
Q4 		$4.77M Buy
+151,496
New +$4.69M 0.01% 1276

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
CCA
Conestoga Capital Advisors Wayne, Pennsylvania $4.6B AUM 16.08% 1-Year Est. Return
SIMG
Stephens Investment Management Group Houston, Texas $9.33B AUM 56.1% 1-Year Est. Return
GCM
Geneva Capital Management Milwaukee, Wisconsin $4.36B AUM 17.81% 1-Year Est. Return
TCM
TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return

Russell Investments Group's RGEN Position: Q2 2026 in Review

Russell Investments Group reduced its Repligen (RGEN) stake by 52% in Q2 2026, selling an estimated $3.72M and leaving 27,957 shares worth $3.81M. The position accounts for ﹤0.01% of the portfolio, ranked #1685.

Russell Investments Group first reported a position in RGEN in Q4 2016 and has held it in 39 quarters since. The position peaked at $18.5M in Q3 2021. 213 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • Russell Investments Group held 27,957 shares of Repligen worth $3.81M as of Q2 2026.
  • Russell Investments Group sold 30,246 Repligen shares in Q2 2026, an estimated $3.72M.
  • Repligen made up ﹤0.01% of Russell Investments Group's portfolio in Q2 2026, its #1685 holding.
  • Russell Investments Group first reported a position in Repligen in Q4 2016 and has held it in 39 quarters since.
  • Russell Investments Group's Repligen position peaked at $18.5M in Q3 2021.
  • 213 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.