Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionSwiss National Bank
Latest Disclosed Ownership303,140 shares
Latest Disclosed Value $ 234,218,090
Swiss National Bank reports 6.19% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 7, 2026 - Swiss National Bank filed a 13F-HR form disclosing ownership of 303,140 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $234,218,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 285,460 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 6.19% 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)
2026-05-07 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 303,140 17,680 6.19 234,218 6.30 0.1348
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 285,460 -20,540 -6.71 220,338 28.06 0.1311
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 306,000 -17,700 -5.47 172,055 1.24 0.0998
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 323,700 18,900 6.20 169,942 -12.09 0.1018
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 304,800 -1,500 -0.49 193,313 -11.40 0.1365
2025-02-10 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 306,300 -15,300 -4.76 218,187 -35.46 0.1451
2024-11-07 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 321,600 2,000 0.63 338,079 0.65 0.2196
2024-08-08 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 319,600 -1,200 -0.37 335,909 8.79 0.2308
2024-05-07 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 320,800 -13,000 -3.89 308,767 5.32 0.2164
2024-02-06 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 333,800 -13,300 -3.83 293,173 2.63 0.2151
2023-11-08 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 347,100 -41,200 -10.61 285,649 2.38 0.2241
2023-08-09 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 388,300 -36,700 -8.64 279,009 -20.10 0.1895
2023-05-10 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 425,000 -10,600 -2.43 349,210 11.11 0.2394
2023-02-08 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 435,600 -32,572 -6.96 314,281 -2.55 0.2257
2022-11-09 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 468,172 5,300 1.15 322,510 17.87 0.2307
2022-08-09 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 462,872 5,000 1.09 273,618 -14.44 0.1851
2022-05-09 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 457,872 58,400 14.62 319,787 26.76 0.1803
2022-02-08 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 399,472 -14,500 -3.50 252,275 0.70 0.1519
2021-11-08 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 413,972 -15,400 -3.59 250,528 4.46 0.1593
2021-08-06 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 429,372 -177,450 -29.24 239,821 -16.47 0.1479
2021-05-07 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 606,822 10,700 1.79 287,112 -0.31 0.1914
2021-02-05 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 596,122 26,000 4.56 287,992 -9.76 0.2046
2020-11-09 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 570,122 90,500 18.87 319,143 6.70 0.2496
2020-08-05 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 479,622 165,400 52.64 299,116 94.95 0.2529
2020-05-08 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 314,222 58,800 23.02 153,431 59.98 0.1629
2020-02-06 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 255,422 -11,400 -4.27 95,906 29.57 0.0984
2019-11-12 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 266,822 4,422 1.69 74,016 -9.88 0.0787
2019-08-02 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 262,400 -3,800 -1.43 82,131 -24.86 0.0886
2019-05-10 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 266,200 7,400 2.86 109,307 13.08 0.1199
2019-02-13 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 258,800 5,100 2.01 96,662 -5.70 0.1240
2018-11-08 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 253,700 -8,100 -3.09 102,505 13.49 0.1142
2018-08-09 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 261,800 7,900 3.11 90,318 3.30 0.1033
2018-05-04 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 253,900 -35,000 -12.11 87,433 -19.50 0.1066
2018-02-07 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 288,900 400 0.14 108,615 -15.80 0.1173
2017-11-03 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 288,500 3,100 1.09 128,994 -7.97 0.1469
2017-08-09 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 285,400 10,100 3.67 140,171 31.39 0.1663
2017-05-04 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 275,300 59,300 27.45 106,682 34.54 0.1327
2017-02-08 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 216,000 1,700 0.79 79,291 -7.96 0.1250
2016-11-07 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 214,300 -2,100 -0.97 86,153 14.00 0.1380
2016-08-03 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 216,400 17,300 8.69 75,573 9.88 0.1223
2016-05-04 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 199,100 60,600 43.75 68,778 -8.52 0.1262
2016-02-03 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 138,500 2,900 2.14 75,187 19.21 0.1819
2015-11-04 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 135,600 13,800 11.33 63,073 1.51 0.1619
2015-08-05 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 121,800 300 0.25 62,134 13.27 0.1610
2015-05-06 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 121,500 121,500 0.00 54,855 0.1465
2015-02-03 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -75,600 -100.00 0 -100.00
2014-11-04 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 75,600 -700 -0.92 27,255 26.46 0.1045
2014-08-06 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 76,300 800 1.06 21,552 -4.94 0.0797
2014-05-06 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 75,500 -6,900 -8.37 22,671 -0.04 0.0889
2014-01-31 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 82,400 -700 -0.84 22,680 -12.77 0.0885
2013-10-29 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 83,100 1,900 2.34 25,999 42.38 0.1083
2013-08-09 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 81,200 81,200 18,260 0.0802
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.