Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionSchroder Investment Management Group
Latest Disclosed Ownership12,070 shares
Latest Disclosed Value $ 9,325,766
Schroder Investment Management Group reports 24.29% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Schroder Investment Management Group filed a 13F-HR form disclosing ownership of 12,070 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $9,325,766 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,711 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 24.29% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,070 2,359 24.29 9,326 24.42 0.0015
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,711 -16,044 -62.29 7,496 -48.24 0.0057
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 25,755 3,750 17.04 14,481 25.35 0.0113
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 22,005 -25,815 -53.98 11,553 -61.91 0.0098
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 47,820 -33,704 -41.34 30,329 -47.77 0.0306
2025-02-12 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 81,524 -13,477 -14.19 58,072 -41.85 0.0556
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 95,001 21,104 28.56 99,869 28.58 0.1024
2024-08-12 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 73,897 -7,469 -9.18 77,668 -0.82 0.0857
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 81,366 39,022 92.15 78,314 110.58 0.0921
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 42,344 8,901 26.62 37,190 35.13 0.0482
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 33,443 -14,119 -29.69 27,522 -19.47 0.0409
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 47,562 -92,897 -66.14 34,175 -70.39 0.0490
2023-05-11 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 140,459 -21,466 -13.26 115,411 -1.21 0.1717
2023-02-10 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 161,925 14,663 9.96 116,827 15.17 0.1855
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 147,262 88,074 148.80 101,443 186.79 0.1679
2022-08-11 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 59,188 9,190 18.38 35,372 2.18 0.0539
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 49,998 21,162 73.39 34,618 90.10 0.0457
2022-02-14 2021-12-31 13F Regeneron Pharmaceuticals COM 75886F107 28,836 -16,298 -36.11 18,210 -33.33 0.0238
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 45,134 18,823 71.54 27,315 85.88 0.0420
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 26,311 1,762 7.18 14,695 26.52 0.0184
2021-05-28 2021-03-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 24,549 -1,654 -6.31 11,615 96,691.67 0.0151
2021-05-17 2021-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 24,549 -1,654 11,615 0.0151
2021-02-24 2020-12-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 26,203 -2,956 -10.14 13 -99.93 0.0179
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 26,203 -2,956 13 0.0177
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 29,159 14,473 98.55 16,469 79.79 0.0263
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 14,686 11,320 336.30 9,160 439.46 0.0166
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 3,366 1,693 101.20 1,698 170.38 0.0036
2020-02-11 2019-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 1,673 -4,551 -73.12 628 -63.10 0.0010
2019-11-12 2019-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 6,224 5,419 673.17 1,702 575.40 0.0030
2019-11-14 2019-06-30 13F/A-2 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 805 0 0.00 252 -23.87 0.0005
2019-08-15 2019-06-30 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 805 0 252 0.0003
2019-08-08 2019-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 805 0 252 270.3586
2019-11-15 2019-03-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 805 -23 -2.78 331 7.12 0.0006
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 805 -23 331 537.6121
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 828 0 0.00 309 -7.76 0.0006
2018-11-13 2018-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 828 -26 -3.04 335 14.73 0.0006
2018-08-23 2018-06-30 13F/A-2 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 854 -8,291 -90.66 292 -90.73 0.0005
2018-08-16 2018-06-30 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 854 0 292 0.0005
2018-08-13 2018-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 854 -8,291 292 517.0502
2018-05-11 2018-03-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 9,145 -3,993 -30.39 3,149 -36.24 0.0055
2018-05-11 2018-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 9,145 -3,993 3,149 5,456.9600
2018-02-09 2017-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 13,138 720 5.80 4,939 -8.59 0.0081
2017-11-09 2017-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 12,418 -4,058 -24.63 5,403 -35.69 0.0094
2017-08-10 2017-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 16,476 5,433 49.20 8,402 97.00 0.0151
2017-05-18 2017-03-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 11,043 -2,625 -19.21 4,265 -14.99 0.0077
2017-05-10 2017-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 11,043 -2,625 4,265 7,666.3114
2017-02-10 2016-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 13,668 -2,119 -13.42 5,017 -20.95 0.0096
2016-11-09 2016-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 15,787 184 1.18 6,347 16.48 0.0119
2016-08-08 2016-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 15,603 -13,824 -46.98 5,449 -48.52 0.0109
2016-05-10 2016-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 29,427 4,416 17.66 10,584 -22.05 0.0219
2016-02-10 2015-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 25,011 13,749 122.08 13,578 159.22 0.0280
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 11,262 5,300 88.90 5,238 73.96 0.0111
2015-08-10 2015-06-30 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 5,962 1,000 20.15 3,011 33.53 0.0059
2015-05-12 2015-03-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 4,962 -2,700 -35.24 2,255 -28.25 0.0044
2015-02-18 2014-12-31 13F/A-1 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 7,662 700 3,143 0.0062
2015-02-25 2014-12-31 13F/A-2 REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 7,662 700 10.05 3,143 25.27 0.0062
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS INCORPORATED USD0.001 COM 75886F107 7,662 700 3,143 4,563.7560
2014-11-13 2014-09-30 13F Regeneron Pharm. CmStkUSD0.001 COM 75886F107 6,962 3,498 100.98 2,510 156.54 0.0034
2014-08-13 2014-06-30 13F Regeneron Pharm CmStkUSD0 001 COM 75886F107 3,464 0 0.00 978 -5.96 0.0012
2014-05-15 2014-03-31 13F Regeneron Pharm. CmStkUSD0.001 COM 75886F107 3,464 0 0.00 1,040 9.13 0.0012
2014-02-14 2013-12-31 13F Regeneron Pharm. CmStkUSD0.001 COM 75886F107 3,464 0 0.00 953 -12.00 0.0012
2013-12-09 2013-09-30 13F/A-1 Regeneron Pharm. CmStkUSD0.001 COM 75886F107 1,083,782 1,080,318 339,083 0.0102
2013-12-10 2013-09-30 13F/A-2 Regeneron Pharm. CmStkUSD0.001 COM 75886F107 3,464 0 0.00 1,084 39.20 0.0026
2013-11-08 2013-09-30 13F Regeneron Pharm. CmStkUSD0.001 COM 75886F107 3,464 0 1,084 2.6744
2013-08-12 2013-06-30 13F Regeneron Pharm. CmStkUSD0.001 COM 75886F107 3,464 3,464 779 0.0021
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.