Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionPrudential Plc
Latest Disclosed Ownership3,988 shares
Latest Disclosed Value $ 3,081,288
Prudential Plc reports 108.25% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Prudential Plc filed a 13F-HR form disclosing ownership of 3,988 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $3,081,288 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,915 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 108.25% 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.

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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 3,988 2,073 108.25 3,081 108.46 0.0133
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,915 -544 -22.12 1,478 6.95 0.0117
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,459 733 42.47 1,383 52.54 0.0102
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,726 0 0.00 906 -17.18 0.0055
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,726 -1,745 -50.27 1,095 -55.74 0.0055
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,471 -1,322 -27.58 2,472 -50.93 0.0124
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,793 219 4.79 5,039 4.81 0.0253
2024-08-07 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,574 453 10.99 4,807 21.21 0.0324
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,121 -633 -13.32 3,966 -5.01 0.0302
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,754 -16 -0.34 4,175 6.37 0.0424
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,770 -2,831 -37.25 3,926 -28.13 0.0436
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 7,601 -447 -5.55 5,462 -17.41 0.0639
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,048 41 0.51 6,613 14.47 0.0776
2023-02-09 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,007 2,754 52.43 5,777 59.60 0.0725
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,253 -4,194 -44.40 3,619 -35.19 0.0573
2022-08-12 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,447 3,848 68.73 5,584 42.81 0.1011
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,599 3,326 146.33 3,910 172.28 0.0565
2022-02-11 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,273 -297 -11.56 1,436 -7.71 0.0197
2021-11-10 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,570 -4,508 -63.69 1,556 -60.64 0.0217
2021-08-13 2021-06-30 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 7,078 0 0.00 3,953 18.04 0.0366
2021-05-14 2021-03-31 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 7,078 -66 -0.92 3,349 -2.96 0.0232
2021-02-10 2020-12-31 13F/A-1 REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 7,144 1,935 37.15 3,451 18.35 0.0183
2021-02-08 2020-12-31 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 7,144 1,935 3,451 7,852.2190
2020-10-30 2020-09-30 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 5,209 -90 -1.70 2,916 -11.77 0.0145
2020-07-31 2020-06-30 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 5,299 -5,412 -50.53 3,305 -36.81 0.0159
2020-05-01 2020-03-31 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 10,711 3,437 47.25 5,230 91.50 0.0279
2020-02-13 2019-12-31 13F REGENERON PHARMACEUT REGENERON PHARMACEUTICALS INC 75886F107 7,274 -66,389 -90.13 2,731 -86.62 0.0115
2019-11-12 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 73,663 977 1.34 20,408 -10.30 0.0600
2019-10-04 2019-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 72,686 636 0.88 22,751 -23.10 0.0695
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 72,686 636 22,751
2019-10-04 2019-03-31 13F/A-1 Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 72,050 -39,771 -35.57 29,586 -29.16 0.1065
2019-05-13 2019-03-31 13F Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 72,050 -39,771 29,586
2019-10-04 2018-12-31 13F/A-1 Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 111,821 -138 -0.12 41,766 -7.67 0.1682
2019-02-13 2018-12-31 13F Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 111,821 -138 41,766
2019-10-03 2018-09-30 13F/A-1 Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 111,959 -256 -0.23 45,235 16.85 0.1460
2018-11-14 2018-09-30 13F Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 111,959 -256 45,235
2018-08-14 2018-06-30 13F Regeneron Pharmaceut REGENERON PHARMACEUTICALS ORD 75886F107 112,215 5,149 4.81 38,713 5.00 0.1211
2018-05-15 2018-03-31 13F REGENERON PHARMACE COM USD0.001 75886F107 107,066 28,100 35.58 36,869 24.19 0.1151
2018-02-14 2017-12-31 13F REGENERON PHARMACE COM USD0.001 75886F107 78,966 28,100 55.24 29,688 30.54 0.0904
2017-11-14 2017-09-30 13F REGENERON PHARMACE COM USD0.001 75886F107 50,866 7,124 16.29 22,743 5.87 0.0718
2017-08-14 2017-06-30 13F REGENERON PHARMACE COM USD0.001 75886F107 43,742 5,500 14.38 21,483 44.97 0.0704
2017-05-15 2017-03-31 13F REGENERON PHARMACE COM USD0.001 75886F107 38,242 7,549 24.60 14,819 31.53 0.0497
2017-02-09 2016-12-31 13F REGENERON PHARMACE COM USD0.001 75886F107 30,693 30,693 0.00 11,267 0.0396
2016-05-13 2016-03-31 13F REGENERON PHARMACE COM USD0.001 75886F107 0 -505 -100.00 0 -100.00
2016-02-12 2015-12-31 13F REGENERON PHARMACE COM USD0.001 75886F107 505 0 0.00 274 16.60 0.0011
2015-11-13 2015-09-30 13F REGENERON PHARMACE COM USD0.001 75886F107 505 505 235 0.0010
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.