REPLIGEN CORP (RGEN) Institutional Ownership Changes & 13F Activity
REPLIGEN CORP (RGEN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Price T Rowe Associates Inc, Ameriprise Financial Inc, Invesco Ltd., Citadel Advisors Llc, and Holocene Advisors, Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Anchor Investment Management, Llc | Buy | +5 | — | 5 | $682.00 | Q2 2026 | Sep 15, 2026 |
| Manufacturers Life Insurance Company, The | Sell | -11,768 | -23.6% | 38,172 | $5.21M | Q2 2026 | Sep 09, 2026 |
| Parkside Financial Bank & Trust | Buy | +33 | +3.0% | 1,132 | $154.45K | Q2 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Sell | -722,872 | -65.8% | 376,309 | $51.34M | Q2 2026 | Sep 02, 2026 |
| Allianz Asset Management Gmbh | Buy | +2,000 | +70.2% | 4,851 | $661.87K | Q2 2026 | Sep 02, 2026 |
| Cornerstone Financial Management Llc | Buy | +8 | — | 8 | $1.09K | Q2 2026 | Aug 28, 2026 |
| Corient Private Wealth Llc | Buy | +9,146 | +420.9% | 11,319 | $1.54M | Q2 2026 | Aug 27, 2026 |
| Optimize Financial Inc | Sell | -12 | -0.3% | 3,681 | $502.24K | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Sell | -1,748 | -2.8% | 60,112 | $8.20M | Q2 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Buy | +70,995 | — | 70,995 | $9.69M | Q2 2026 | Aug 21, 2026 |
| Mercer Global Advisors Inc | Buy | +2,185 | — | 2,185 | $298.12K | Q2 2026 | Aug 19, 2026 |
| North Star Asset Management Inc | Sell | -6,402 | -7.6% | 77,561 | $10.58M | Q2 2026 | Aug 18, 2026 |
| United Capital Financial Advisors, Llc | Buy | +16,670 | +0.6% | 2,790,650 | $380.76M | Q2 2026 | Aug 17, 2026 |
| Equitable Holdings, Inc. | Buy | +11,404 | — | 11,404 | $1.56M | Q2 2026 | Aug 17, 2026 |
| Public Employees Retirement System Of Ohio | Buy | +2,692 | +5.1% | 55,503 | $7.57M | Q2 2026 | Aug 17, 2026 |
| Integrated Investment Consultants, Llc | Buy | +2,176 | — | 2,176 | $296.89K | Q2 2026 | Aug 17, 2026 |
| Transamerica Financial Advisors, Llc | Buy | +8 | +133.3% | 14 | $1.91K | Q2 2026 | Aug 17, 2026 |
| Price T Rowe Associates Inc | Sell | -3,125,867 | -64.1% | 1,752,274 | $239.08M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +1,576,132 | — | 1,576,132 | $215.05M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +1,387,242 | — | 1,387,242 | $189.28M | Q2 2026 | Aug 14, 2026 |
| Holocene Advisors, Lp | Buy | +583,302 | +82.3% | 1,292,191 | $176.31M | Q2 2026 | Aug 14, 2026 |
| Vestal Point Capital, Lp | Sell | -525,000 | -56.8% | 400,000 | $54.58M | Q2 2026 | Aug 14, 2026 |
| Maverick Capital Ltd | Buy | +465,749 | +30.7% | 1,984,554 | $270.77M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Sell | -403,317 | -70.8% | 166,157 | $22.67M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +314,064 | +48.2% | 965,411 | $131.72M | Q2 2026 | Aug 14, 2026 |
| Fred Alger Management, Llc | Buy | +298,965 | +68.8% | 733,739 | $100.11M | Q2 2026 | Aug 14, 2026 |
| Granahan Investment Management, Llc | Buy | +245,318 | +282.1% | 332,271 | $45.34M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +230,038 | +183.3% | 355,507 | $48.51M | Q2 2026 | Aug 14, 2026 |
| Silvercrest Asset Management Group Llc | Buy | +205,452 | +241.4% | 290,559 | $39.64M | Q2 2026 | Aug 14, 2026 |
| Bamco Inc | Buy | +200,120 | +36.5% | 748,466 | $102.12M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about RGEN activity
Which institutional owners are buying RGEN?
Institutional owners buying RGEN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in RGEN activity?
"Buy" means an investor increased their reported position in RGEN compared to the prior reporting period. This reflects growing exposure to REPLIGEN CORP (RGEN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in RGEN increasing?
Institutional interest in RGEN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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