Repligen Corp (RGEN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

954,621Shares held by institutions

$106,392,510Value of institutional holdings

103.09%Institutional ownership %

-2.87%Shares Changed QoQ

444No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Repligen Corp (NASDAQ:RGEN) has 462 institutional investors with active 13F positions as of December 2025.

These investors collectively held 102.5% of Repligen's outstanding shares in December 2025, down from 108.0% in September 2025.
They increased total shares held in RGEN by 5.44% quarter over quarter, and investors in Repligen increased 7.94% from a year ago.
Activity in RGEN broke down as 242 buyers, 144 sellers, and 76 unchanged among 462 total holders.
In total, institutional investors held 57.93Mn shares in Repligen as of December 2025, up by 2.99Mn shares quarter on quarter, and down 1.38Mn shares year over year.
As of December 31, 2025, BlackRock, Inc. held the largest stake in Repligen with 6.62Mn shares, accounting for 11.71% of total shares outstanding.
Top purchasers of RGEN stock for the quarter ending December 2025 included MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.22Mn), RTW INVESTMENTS, LP (1.06Mn), Franklin Resources Inc (677.15K), FRED ALGER MANAGEMENT, LLC (553.1K), CONGRESS ASSET MANAGEMENT CO (527.71K).
The biggest sellers of Repligen for the quarter ending December 2025 included BALYASNY ASSET MANAGEMENT L.P. (652.19K), Point72 Asset Management, L.P. (434.41K), Holocene Advisors, LP (416.06K), BROWN CAPITAL MANAGEMENT LLC (394.89K), GROUPAMA ASSET MANAGMENT (394.1K).
Per Business Quant data, the top 10 holders of Repligen for the quarter ending December 2025 are BlackRock, Inc. (6.62Mn), VANGUARD GROUP INC (4.99Mn), FMR LLC (2.87Mn), UNITED CAPITAL FINANCIAL ADVISORS, LLC (2.77Mn), State Street Corp (1.72Mn), CITADEL ADVISORS LLC (1.39Mn), Bank of New York Mellon Corp (1.34Mn), Invesco Ltd. (1.26Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.22Mn), Franklin Resources Inc (1.1Mn).

462 Institutional Holders

954,621 Total Shares Held

Rows:

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Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	479,541	7.81%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-50,246	-1.00%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	-434,411	-30.15%	$0.00
Barclays Plc	31 Dec, 2025	-124,085	-43.81%	$0.00
FMR LLC	31 Dec, 2025	176,634	6.56%	$0.00
Holocene Advisors, LP	31 Dec, 2025	-416,064	-30.21%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	1,890	82.32%	$0.00
UNITED CAPITAL FINANCIAL ADVISORS, LLC	31 Dec, 2025	14,919	0.54%	$0.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	117,432	20.53%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	966	503.13%	$0.00
State Street Corp	31 Dec, 2025	-82,443	-4.58%	$0.00
Walleye Capital LLC	31 Dec, 2025	231,353	124.55%	$0.00
CITADEL ADVISORS LLC	31 Dec, 2025	-290,468	-17.24%	$0.00
Impax Asset Management Group plc	31 Dec, 2025	-289,853	-41.22%	$0.00
Bank of New York Mellon Corp	31 Dec, 2025	28,870	2.19%	$0.00
UBS Group AG	31 Dec, 2025	-108,541	-23.75%	$0.00
Invesco Ltd.	31 Dec, 2025	383,399	43.92%	$0.00
Iron Triangle Partners LP	31 Dec, 2025	50,474	18.69%	$0.00
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	31 Dec, 2025	1,215,527	0.00%	$0.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	7,430	2.45%	$0.00

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