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.
Sign in or subscribeLargest 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 | 2.7% |
| 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 |
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.