REGN Regeneron Pharmaceuticals, Inc.
Regeneron Pharmaceuticals, Inc. (REGN) Institutional Ownership
What the institutions did with REGN 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. | 9.1M | 9.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.6M | 7.2% |
| Dodge & Cox | 4.9M | 5.3% |
| STATE STREET CORP | 4.8M | 5.3% |
| Invesco Ltd. | 3.9M | 4.3% |
| JPMORGAN CHASE & CO | 3.8M | 4.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.2M | 3.5% |
| FRANKLIN RESOURCES INC | 2.8M | 3.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6M | 2.9% |
| Nuveen, LLC | 2.0M | 2.2% |
| LOOMIS SAYLES & CO L P | 1.9M | 2.0% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.5M | 1.7% |
| MORGAN STANLEY | 1.4M | 1.5% |
| BANK OF AMERICA CORP /DE/ | 1.3M | 1.4% |
| WELLINGTON MANAGEMENT GROUP LLP | 1.3M | 1.4% |
| NORGES BANK | 1.2M | 1.3% |
| GOLDMAN SACHS GROUP INC | 1.2M | 1.3% |
| AQR CAPITAL MANAGEMENT LLC | 1.1M | 1.2% |
| Amundi | 1.0M | 1.1% |
| NORTHERN TRUST CORP | 916.5K | 1.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 846.3K | 0.9% |
| FMR LLC | 832.0K | 0.9% |
| Capital World Investors | 814.9K | 0.9% |
| Legal & General Group Plc | 760.0K | 0.8% |
| Bank of New York Mellon Corp | 758.5K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.7M | 3.2M | +1.5M |
| FMR LLC | Reduced | 1.5M | 832.0K | -686.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 2.2M | 1.5M | -647.8K |
| Capital World Investors | Reduced | 1.4M | 814.9K | -604.1K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 1.8M | 1.3M | -567.4K |
| JPMORGAN CHASE & CO | Reduced | 4.3M | 3.8M | -537.6K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 562.1K | 62.2K | -499.9K |
| Dodge & Cox | Increased | 4.5M | 4.9M | +412.9K |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 349.9K | 65.5K | -284.4K |
| Assenagon Asset Management S.A. | Increased | 207.8K | 489.9K | +282.1K |
| SG Americas Securities, LLC | Increased | 158.3K | 427.7K | +269.4K |
| NORDEA INVESTMENT MANAGEMENT AB | Increased | 94.3K | 363.5K | +269.2K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | 408.9K | 148.0K | -261.0K |
| WORLDQUANT MILLENNIUM ADVISORS LLC | Increased | 100.7K | 354.0K | +253.3K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 171.6K | 393.7K | +222.1K |
| FIRST TRUST ADVISORS LP | Increased | 346.9K | 547.1K | +200.3K |
| Polar Capital Holdings Plc | Sold Out | 192.5K | 0 | -192.5K |
| Pictet Asset Management Holding SA | Reduced | 337.3K | 153.5K | -183.8K |
| ROYAL BANK OF CANADA | Reduced | 351.2K | 174.5K | -176.7K |
| STATE STREET CORP | Increased | 4.7M | 4.8M | +170.2K |
| BlackRock, Inc. | Increased | 8.9M | 9.1M | +165.8K |
| CITIGROUP INC | Increased | 184.7K | 346.6K | +161.9K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 812.2K | 656.1K | -156.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 30.6K | 180.2K | +149.6K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Increased | 15.4K | 164.0K | +148.6K |
| KBC Group NV | Increased | 38.5K | 179.5K | +141.0K |
| Qube Research & Technologies Ltd | Increased | 83.4K | 221.6K | +138.2K |
| GOLDMAN SACHS GROUP INC | Reduced | 1.3M | 1.2M | -137.4K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 426.9K | 292.3K | -134.6K |
| JUPITER ASSET MANAGEMENT LTD | Increased | 265 | 126.1K | +125.8K |
| Thrivent Financial for Lutherans | Increased | 8.4K | 131.5K | +123.0K |
| Man Group plc | Increased | 315.2K | 437.0K | +121.7K |
| Bellevue Group AG | Reduced | 278.7K | 157.3K | -121.4K |
| JENNISON ASSOCIATES LLC | Sold Out | 115.2K | 0 | -115.2K |
| Robeco Institutional Asset Management B.V. | Increased | 348.8K | 460.6K | +111.8K |
| DEUTSCHE BANK AG\ | Reduced | 625.4K | 518.4K | -107.0K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 1.2M | 1.1M | -104.9K |
| MILLENNIUM MANAGEMENT LLC | Increased | 62.7K | 165.1K | +102.4K |
| Capital Research Global Investors | Sold Out | 101.9K | 0 | -101.9K |
| BANK OF AMERICA CORP /DE/ | Increased | 1.2M | 1.3M | +101.5K |
| Zurich Insurance Group Ltd/FI | Sold Out | 99.1K | 0 | -99.1K |
| AMERIPRISE FINANCIAL INC | Reduced | 319.7K | 227.5K | -92.2K |
| TD Asset Management Inc | Reduced | 350.9K | 259.3K | -91.6K |
| BANK OF NOVA SCOTIA | Increased | 97.5K | 181.7K | +84.2K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 66.8K | 148.2K | +81.4K |
| Allianz Asset Management GmbH | Increased | 301.2K | 380.6K | +79.4K |
| Caisse de depot et placement du Quebec | Reduced | 329.0K | 250.6K | -78.4K |
| MORGAN STANLEY | Increased | 1.3M | 1.4M | +78.4K |
| Handelsbanken Fonder AB | Reduced | 125.0K | 52.3K | -72.7K |
| PANAGORA ASSET MANAGEMENT INC | Increased | 105.2K | 175.3K | +70.1K |
| Carmignac Gestion | Increased | 116.6K | 182.5K | +65.9K |
| HSBC HOLDINGS PLC | Increased | 323.3K | 382.0K | +58.7K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Increased | 273.1K | 331.6K | +58.4K |
| LSV ASSET MANAGEMENT | Increased | 196.3K | 253.2K | +56.9K |
| BARCLAYS PLC | Reduced | 313.1K | 256.2K | -56.9K |
| Mediolanum International Funds Ltd | Reduced | 71.2K | 14.8K | -56.5K |
| ARMISTICE CAPITAL, LLC | Increased | 36.1K | 89.8K | +53.7K |
| CREDIT AGRICOLE S A | Reduced | 92.4K | 39.0K | -53.4K |
| LOOMIS SAYLES & CO L P | Reduced | 1.9M | 1.9M | -53.1K |
| Epoch Investment Partners, Inc. | Reduced | 238.7K | 186.9K | -51.9K |
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.