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RGEN Institutional Ownership & 13F Holders | SmartMoneyDB

RGENREPLIGEN CORP

COM · CUSIP 759916109

Smart Money Ownership

Of the 11 tracked institutions holding RGEN, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +6.3pt. It's a gauge of who owns the name, not just how many.

Steve Cohen

$67.1M · 0.1% of book

+11.9pt

Lee Ainslie

$178.9M · 2.1% of book

+9.8pt

Ken Griffin

$129.5M · 0.1% of book

RGEN (REPLIGEN CORP) Institutional Ownership Summary

Among the 11 tracked institutional investors we monitor, RGEN (REPLIGEN CORP) is held with a combined value of $3.03B across 23,790,761 shares. The largest holder is VANGUARD GROUP INC with a position worth $818.31M (0.01% of their portfolio). MAVERICK CAPITAL LTD opened a new position in the most recent quarter. 4 funds increased their holdings. 6 funds reduced their position.

Total Institutional Value

$3.03B

Total Shares Held

23,790,761

Institutional Holders

% of Shares Outstanding

42.2%

of 56.41M shares · SEC 2026-05-01

Days to Cover

7.9-3.9%

5.81M shares short · FINRA 2026-07-15

Tracked 13F institutions hold 42.2% of RGEN's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-05-01), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

MAVERICK CAPITAL LTDNew position~$178.9M PRICE T ROWE ASSOCIATES INC /MD/+6% shares~$33.0M STATE STREET CORP+3% shares~$6.9M FMR LLC+1% shares~$2.4M AQR CAPITAL MANAGEMENT LLC+3% shares~$26.7K

13F Institutional Holders

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PRICE T ROWE ASSOCIATES INC /MD/

Point72 Asset Management, L.P.

0.12% of book-43.4%

$67.10M

MILLENNIUM MANAGEMENT LLC

0.00% of book-94.5%

$4.30M

Gotham Asset Management, LLC

0.01% of book-43.1%

$3.39M

#	Fund	Value↓	Shares	Portfolio %	Change
1	VANGUARD GROUP INC	$818.31M	4,993,945	0.01%	-1.0%
2	BlackRock, Inc.	$706.10M	5,993,054	0.01%	-9.5%
3	PRICE T ROWE ASSOCIATES INC /MD/	$574.74M	4,878,141	0.07%	+6.1%
4	FMR LLC	$340.12M	2,886,786	0.02%	+0.7%
5	STATE STREET CORP	$209.40M	1,777,285	0.01%	+3.4%
6	MAVERICK CAPITAL LTD	$178.95M	1,518,805	2.08%	New
7	CITADEL ADVISORS LLC	$129.51M	1,099,181	0.09%	-21.2%
8	Point72 Asset Management, L.P.	$67.10M	569,474	0.12%	-43.4%
9	MILLENNIUM MANAGEMENT LLC	$4.30M	36,461	0.00%	-94.5%
10	Gotham Asset Management, LLC	$3.39M	28,749	0.01%	-43.1%

Congress Trading

2 members · 7 disclosed trades in RGEN

Member	Type	Amount	Date
Lisa McClain	Sell	$1,001 - $15,000	Oct 31, 2025
Lisa McClain	Sell	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Buy	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Buy	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most RGEN stock?

As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of RGEN with a position worth $818.31M, representing 0.01% of their portfolio. In total, 11 institutional investors hold RGEN with a combined value of $3.03B.

Are hedge funds buying or selling RGEN?

In the most recent quarter, 1 fund opened a new position in RGEN. Additionally, 4 increased their holdings and 6 reduced their positions.

What percentage of RGEN is owned by institutional investors?

Institutional investors hold $3.03B worth of RGEN stock across 11 positions. The largest institutional holder is VANGUARD GROUP INC with $818.31M in holdings.

What is a 13F filing and why does it matter for RGEN?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For RGEN, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track RGEN institutional moves

Get notified when hedge funds change their RGEN positions.