REGN Institutional Ownership & Shareholders
REGENERON PHARMACEUTICALS (REGN) is currently held by 1,395 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $55.85B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of REGN tracked by InsiderSet, reporting ownership valued at approximately $5.68B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $8.46B, representing an estimated gain of +48.81% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed REGN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Dodge & Cox Stock Fund, and several other long-term asset managers with concentrated positions in REGENERON PHARMACEUTICALS (REGN).
This page ranks the largest institutional REGN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,395
Total Reported Value
$55.85B
Largest Holder
Blackrock, Inc.
Largest Position
$5.68B
Insider Transactions (90d)
38
Latest Filing Quarter
Q2 2026
New Institutional Positions
45
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.08% | 9,113,506 | $5,682,635,642 | $8,456,331,082 | +$2,773,695,440 | +48.81% | |
| Vanguard Capital Management Llc | 0.09% | 6,629,759 | $4,133,919,926 | $6,151,687,079 | +$2,017,767,153 | +48.81% | |
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 1.59% | 4,871,137 | $3,037,348,765 | $4,519,879,311 | +$1,482,530,546 | +48.81% |
| State Street Corp | 0.09% | 4,834,688 | $3,014,621,356 | $4,486,058,648 | +$1,471,437,292 | +48.81% | |
| Invesco Ltd. | 0.19% | 3,940,665 | $2,457,161,872 | $3,656,503,647 | +$1,199,341,775 | +48.81% | |
| Jpmorgan Chase & Co | 0.14% | 3,774,199 | $2,384,577,378 | $3,502,041,510 | +$1,117,464,132 | +46.86% | |
| Vanguard Portfolio Management Llc | 0.09% | 3,175,313 | $1,979,934,668 | $2,946,341,180 | +$966,406,512 | +48.81% | |
| Geode Capital Management, Llc | 0.09% | 2,625,810 | $1,632,283,060 | $2,436,462,841 | +$804,179,781 | +49.27% | |
| Nuveen, Llc | 0.30% | 2,019,974 | $1,259,533,994 | $1,874,313,675 | +$614,779,681 | +48.81% | |
| Loomis Sayles & Co L P | 1.45% | 1,859,172 | $1,159,268,030 | $1,725,107,107 | +$565,839,077 | +48.81% | |
| Peakshares Llc | 0.73% | 1,564 | $975,217,000 | $1,451,220 | -$973,765,780 | -99.85% | |
| Price T Rowe Associates Inc | 0.10% | 1,529,709 | $953,836,000 | $1,419,401,684 | +$465,565,684 | +48.81% | |
| Morgan Stanley | 0.05% | 1,397,712 | $871,531,343 | $1,296,922,988 | +$425,391,645 | +48.81% | |
| Bank Of America Corp | 0.05% | 1,291,053 | $805,023,383 | $1,197,955,168 | +$392,931,785 | +48.81% | |
| Wellington Management Group Llp | 0.14% | 1,270,087 | $791,950,049 | $1,178,501,026 | +$386,550,977 | +48.81% | |
| Norges Bank | 0.07% | 1,172,808 | $731,292,700 | $1,088,236,815 | +$356,944,115 | +48.81% | |
| Goldman Sachs Group Inc | 0.08% | 1,163,191 | $725,295,767 | $1,079,313,297 | +$354,017,530 | +48.81% | |
| Aqr Capital Management Llc | 0.24% | 1,126,080 | $702,155,889 | $1,044,878,371 | +$342,722,482 | +48.81% | |
| Northern Trust Corp | 0.07% | 916,467 | $571,453,833 | $850,380,565 | +$278,926,732 | +48.81% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.12% | 723,621 | $559,098,531 | $671,440,690 | +$112,342,159 | +20.09% | |
| Charles Schwab Investment Management Inc | 0.07% | 846,306 | $527,705,643 | $785,278,874 | +$257,573,231 | +48.81% | |
| Fmr Llc | 0.02% | 831,964 | $518,763,486 | $771,971,076 | +$253,207,590 | +48.81% | |
| Capital World Investors | 0.06% | 814,925 | $508,138,359 | $756,160,758 | +$248,022,399 | +48.81% | |
| Legal & General Group Plc | 0.10% | 759,971 | $473,872,322 | $705,169,491 | +$231,297,169 | +48.81% | |
| Bank Of New York Mellon Corp | 0.08% | 758,492 | $472,950,278 | $703,797,142 | +$230,846,864 | +48.81% | |
| Two Sigma Investments, Lp | 0.31% | 656,124 | $409,119,559 | $608,810,898 | +$199,691,339 | +48.81% | |
| Vanguard Fiduciary Trust Co | 0.08% | 563,711 | $351,496,357 | $523,061,800 | +$171,565,443 | +48.81% | |
| Dimensional Fund Advisors Lp | 0.06% | 559,687 | $349,040,316 | $519,327,970 | +$170,287,654 | +48.79% | |
| First Trust Advisors Lp | 0.20% | 547,132 | $341,158,711 | $507,678,311 | +$166,519,600 | +48.81% | |
| Neuberger Berman Group Llc | 0.24% | 422,127 | $325,827,486 | $391,687,422 | +$65,859,936 | +20.21% | |
| Deutsche Bank Ag\ | 0.09% | 518,409 | $323,248,747 | $481,026,527 | +$157,777,780 | +48.81% | |
| Robeco Institutional Asset Management B.V. | 0.37% | 402,958 | $305,550,967 | $373,900,699 | +$68,349,732 | +22.37% | |
| Man Group Plc | 0.50% | 436,956 | $272,459,544 | $405,447,103 | +$132,987,559 | +48.81% | |
| Sg Americas Securities, Llc | 0.15% | 427,703 | $266,690,000 | $396,861,337 | +$130,171,337 | +48.81% | |
| Bnp Paribas Financial Markets | 0.13% | 399,847 | $249,320,598 | $371,014,033 | +$121,693,435 | +48.81% | |
| Arrowstreet Capital, Limited Partnership | 0.11% | 393,685 | $245,478,345 | $365,296,375 | +$119,818,030 | +48.81% | |
| Hsbc Holdings Plc | 0.11% | 382,028 | $238,531,538 | $354,479,961 | +$115,948,423 | +48.61% | |
| Allianz Asset Management Gmbh | 0.22% | 380,618 | $237,330,548 | $353,171,636 | +$115,841,088 | +48.81% | |
| National Pension Service | 0.15% | 379,815 | $236,829,845 | $352,426,540 | +$115,596,695 | +48.81% | |
| Pacer Advisors, Inc. | 0.60% | 369,451 | $230,367,000 | $342,809,888 | +$112,442,888 | +48.81% | |
| Nordea Investment Management Ab | 0.19% | 363,479 | $227,370,654 | $337,268,529 | +$109,897,875 | +48.33% | |
| Alliancebernstein L.P. | 0.07% | 292,338 | $225,872,032 | $271,257,507 | +$45,385,475 | +20.09% | |
| Worldquant Millennium Advisors Llc | 0.76% | 353,970 | $220,714,454 | $328,445,223 | +$107,730,769 | +48.81% | |
| Citigroup Inc | 0.10% | 346,637 | $216,142,066 | $321,641,006 | +$105,498,940 | +48.81% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.12% | 278,120 | $210,890,052 | $258,064,767 | +$47,174,715 | +22.37% | |
| Bnp Paribas Asset Management Holding S.A. | 0.21% | 331,560 | $206,740,923 | $307,651,208 | +$100,910,285 | +48.81% | |
| Ubs Group Ag | 0.03% | 298,234 | $185,960,829 | $276,728,346 | +$90,767,517 | +48.81% | |
| Swiss National Bank | 0.10% | 293,020 | $182,709,691 | $271,890,328 | +$89,180,637 | +48.81% | |
| Fil Ltd | 0.12% | 265,490 | $165,543,635 | $246,345,516 | +$80,801,881 | +48.81% | |
| Td Asset Management Inc | 0.14% | 259,317 | $161,694,522 | $240,617,651 | +$78,923,129 | +48.81% |
Frequently asked questions about REGN
Who are the largest institutional holders of REGN?
The largest institutional holders of REGN reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, Dodge & Cox Stock Fund, State Street Corp, and Invesco Ltd.. InsiderSet ranks institutional holders by their latest reported REGN position.
What is REGN institutional ownership?
This page tracks REGN positions reported by institutional investment managers through SEC Form 13F. REGENERON PHARMACEUTICALS (REGN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own REGN?
InsiderSet currently tracks 1,395 institutional managers reporting REGN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of REGN shareholders.
How much REGN stock do institutions own?
Institutional investment managers disclosed approximately $55.85B in REGN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was REGN institutional ownership last updated?
The latest REGN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional REGN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its REGN position after the reporting date.
Are institutions buying or selling REGN?
Institutional buying and selling can be analyzed by comparing REGN positions across consecutive 13F reporting periods. InsiderSet's REGN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View REGN ownership changes.
How has REGN institutional ownership changed over time?
InsiderSet tracks REGN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.