RGEN Repligen Corporation
Repligen Corporation (RGEN) Institutional Ownership
What the institutions did with RGEN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 5.4M | 8.1% |
| FMR LLC | 3.3M | 5.0% |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC | 2.8M | 4.2% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | 3.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.3M | 3.5% |
| MAVERICK CAPITAL LTD | 2.0M | 3.0% |
| STATE STREET CORP | 1.8M | 2.7% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.8M | 2.6% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.6M | 2.4% |
| WASATCH ADVISORS LP | 1.6M | 2.4% |
| AMERIPRISE FINANCIAL INC | 1.6M | 2.4% |
| Bank of New York Mellon Corp | 1.5M | 2.3% |
| T. Rowe Price Investment Management, Inc. | 1.4M | 2.1% |
| Invesco Ltd. | 1.4M | 2.1% |
| Holocene Advisors, LP | 1.3M | 2.0% |
| RTW INVESTMENTS, LP | 1.2M | 1.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.1M | 1.6% |
| CONGRESS ASSET MANAGEMENT CO | 1.0M | 1.5% |
| Conestoga Capital Advisors, LLC | 981.0K | 1.5% |
| GOLDMAN SACHS GROUP INC | 965.4K | 1.5% |
| DIMENSIONAL FUND ADVISORS LP | 949.9K | 1.4% |
| Stephens Investment Management Group LLC | 937.1K | 1.4% |
| FRANKLIN RESOURCES INC | 890.2K | 1.3% |
| ALLIANCEBERNSTEIN L.P. | 795.3K | 1.2% |
| UBS Group AG | 795.0K | 1.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 4.9M | 1.8M | -3.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | New | 0 | 788.6K | +788.6K |
| CITADEL ADVISORS LLC | Reduced | 1.1M | 376.3K | -722.9K |
| AMERIPRISE FINANCIAL INC | Increased | 925.2K | 1.6M | +650.9K |
| BlackRock, Inc. | Reduced | 6.0M | 5.4M | -608.1K |
| Holocene Advisors, LP | Increased | 708.9K | 1.3M | +583.3K |
| Vestal Point Capital, LP | Reduced | 925.0K | 400.0K | -525.0K |
| MAVERICK CAPITAL LTD | Increased | 1.5M | 2.0M | +465.7K |
| FMR LLC | Increased | 2.9M | 3.3M | +439.9K |
| Point72 Asset Management, L.P. | Reduced | 569.5K | 166.2K | -403.3K |
| Champlain Investment Partners, LLC | Reduced | 693.9K | 319.0K | -374.9K |
| WASATCH ADVISORS LP | Increased | 1.2M | 1.6M | +346.7K |
| GOLDMAN SACHS GROUP INC | Increased | 651.3K | 965.4K | +314.1K |
| FRANKLIN RESOURCES INC | Reduced | 1.2M | 890.2K | -302.9K |
| Artemis Investment Management LLP | Reduced | 421.8K | 121.7K | -300.1K |
| JPMORGAN CHASE & CO | Increased | 128.2K | 427.8K | +299.5K |
| FRED ALGER MANAGEMENT, LLC | Increased | 434.8K | 733.7K | +299.0K |
| MARSHALL WACE, LLP | New | 0 | 282.1K | +282.1K |
| Granahan Investment Management, LLC | Increased | 87.0K | 332.3K | +245.3K |
| Balyasny Asset Management L.P. | Increased | 125.5K | 355.5K | +230.0K |
| Blue Whale Capital LLP | Reduced | 404.2K | 178.4K | -225.8K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 1.4M | 1.6M | +219.5K |
| CONGRESS ASSET MANAGEMENT CO | Increased | 797.9K | 1.0M | +214.4K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Increased | 85.1K | 290.6K | +205.5K |
| BAMCO INC /NY/ | Increased | 548.3K | 748.5K | +200.1K |
| BRADLEY FOSTER & SARGENT INC/CT | New | 0 | 195.4K | +195.4K |
| Artisan Partners Limited Partnership | Sold Out | 190.1K | 0 | -190.1K |
| Stephens Investment Management Group LLC | Increased | 755.6K | 937.1K | +181.5K |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Increased | 520.1K | 696.2K | +176.1K |
| Ranger Investment Management, L.P. | Sold Out | 161.1K | 0 | -161.1K |
| Assenagon Asset Management S.A. | New | 0 | 142.0K | +142.0K |
| MORGAN STANLEY | Reduced | 683.8K | 543.2K | -140.5K |
| PALISADE CAPITAL MANAGEMENT, LP | Reduced | 240.6K | 109.8K | -130.9K |
| BRAIDWELL LP | Increased | 47.5K | 177.1K | +129.6K |
| Allspring Global Investments Holdings, LLC | Reduced | 280.5K | 153.1K | -127.4K |
| UBS Group AG | Increased | 670.3K | 795.0K | +124.7K |
| Conestoga Capital Advisors, LLC | Reduced | 1.1M | 981.0K | -116.8K |
| Gotham Asset Management, LLC | Increased | 28.7K | 142.6K | +113.9K |
| Invesco Ltd. | Increased | 1.3M | 1.4M | +109.0K |
| Eversept Partners, LP | Reduced | 120.8K | 14.4K | -106.4K |
| SEI INVESTMENTS CO | Increased | 272.1K | 373.3K | +101.2K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 854.7K | 949.9K | +95.1K |
| PEREGRINE CAPITAL MANAGEMENT LLC | New | 0 | 90.0K | +90.0K |
| 12 West Capital Management LP | Increased | 191.2K | 280.2K | +88.9K |
| PRIMECAP MANAGEMENT CO/CA/ | Increased | 235.1K | 323.3K | +88.2K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 258.5K | 172.5K | -86.0K |
| D. E. Shaw & Co., Inc. | New | 0 | 83.3K | +83.3K |
| Freshford Capital Management, LLC | New | 0 | 79.0K | +79.0K |
| Avidity Partners Management LP | Reduced | 155.6K | 77.8K | -77.8K |
| Duquesne Family Office LLC | New | 0 | 77.4K | +77.4K |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 622.9K | 549.2K | -73.7K |
| AGF MANAGEMENT LTD | Sold Out | 60.2K | 0 | -60.2K |
| NEW YORK STATE COMMON RETIREMENT FUND | Reduced | 176.3K | 117.1K | -59.2K |
| ROYCE & ASSOCIATES LP | Increased | 115.9K | 174.8K | +58.9K |
| Cornerstone Advisors, LLC | Sold Out | 56.7K | 0 | -56.7K |
| Roubaix Capital, LLC | Sold Out | 54.6K | 0 | -54.6K |
| BANK OF AMERICA CORP /DE/ | Increased | 378.2K | 426.3K | +48.1K |
| Campbell & CO Investment Adviser LLC | Sold Out | 46.7K | 0 | -46.7K |
| JENNISON ASSOCIATES LLC | Reduced | 121.2K | 75.0K | -46.2K |
| T. Rowe Price Investment Management, Inc. | Increased | 1.4M | 1.4M | +44.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.