Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership299,979 shares
Latest Disclosed Value $ 231,775,774
UBS Group AG ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 299,979 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $231,775,774 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 271,158 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 10.63% during the quarter.

UBS Group AG has a history of taking positions in derivatives of the underlying security (REGN) in the form of stock options. The firm currently holds call options representing 9,400 of underlying shares valued at $7,262,816 USD and put options representing 12,600 of underlying shares valued at $9,735,264 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:REGN / Regeneron Pharmaceuticals, Inc. Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 299,979 28,821 10.63 231,776 10.74 0.0348
2026-01-29 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 271,158 -68,331 -20.13 209,299 9.65 0.0339
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 339,489 45,974 15.66 190,884 23.87 0.0299
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 293,515 6,352 2.21 154,095 -15.39 0.0267
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 287,163 -95,672 -24.99 182,127 -33.21 0.0335
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 382,835 110,985 40.83 272,705 -4.58 0.0504
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 271,850 17,389 6.83 285,780 6.85 0.0623
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 254,461 -3,020 -1.17 267,446 7.92 0.0661
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 257,481 122,544 90.82 247,823 109.11 0.0617
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 134,937 30,517 29.23 118,514 37.91 0.0355
2023-11-09 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 104,420 -56,022 -34.92 85,933 -25.46 0.0296
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 160,442 58,598 57.54 115,284 37.76 0.0389
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 101,844 -37,451 -26.89 83,682 -16.73 0.0306
2023-02-08 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 139,295 88,154 172.37 100,500 185.27 0.0375
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 51,141 -73,182 -58.86 35,230 -52.06 0.0154
2022-08-10 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 124,323 18,975 18.01 73,491 -0.12 0.0302
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 105,348 -83,823 -44.31 73,579 -38.41 0.0245
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 189,171 -16,706 -8.11 119,464 -4.12 0.0342
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 205,877 48,150 30.53 124,593 41.43 0.0392
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 157,727 -760 -0.48 88,097 17.48 0.0284
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 158,487 18,922 13.56 74,987 11.22 0.0249
2021-02-11 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 139,565 57,996 71.10 67,425 47.66 0.0228
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 81,569 -45,315 -35.71 45,661 -42.30 0.0172
2020-07-31 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 126,884 30,814 32.07 79,131 68.69 0.0334
2020-05-01 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 96,070 -24,372 -20.24 46,909 3.73 0.0221
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 120,442 -20,670 -14.65 45,223 15.53 0.0157
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 141,112 33,692 31.36 39,145 16.42 0.0151
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 107,420 -65,499 -37.88 33,623 -52.65 0.0129
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 172,919 67,585 64.16 71,004 80.48 0.0293
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 105,334 -16,215 -13.34 39,342 -19.89 0.0178
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 121,549 23,021 23.36 49,111 44.48 0.0195
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 98,528 12,366 14.35 33,991 14.56 0.0147
2018-05-15 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 86,162 -50,582 -36.99 29,670 -42.29 0.0128
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 136,744 43,872 47.24 51,411 23.81 0.0211
2017-11-14 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 92,872 29,959 47.62 41,525 34.39 0.0192
2017-11-14 2017-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 62,913 7,454 13.44 30,900 43.78 0.0160
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 62,913 7,454 30,900
2017-11-14 2017-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 55,459 14,550 35.57 21,491 43.10 0.0117
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 55,459 14,550 21,491
2017-02-14 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 40,909 3,082 8.15 15,018 -1.25 0.0083
2016-11-14 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 37,827 5,918 18.55 15,208 36.48 0.0091
2016-08-12 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 31,909 2,281 7.70 11,143 4.34 0.0070
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 29,628 -41,694 -58.46 10,679 -72.42 0.0072
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 71,322 17,101 31.54 38,718 53.52 0.0251
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 54,221 -27,399 -33.57 25,220 -39.43 0.0179
2015-08-14 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 81,620 -6,372 -7.24 41,636 4.81 0.0277
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 87,992 -10,512 -10.67 39,727 -1.69 0.0274
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 98,504 98,504 40,411 0.0282
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F REGENERON PHARMACEUTICALS COM Call 9,400 -21.01 7,263 -20.94 n/a n/a n/a
2026-01-29 2025-12-31 13F REGENERON PHARMACEUTICALS COM Call 11,900 -27.88 9,185 -0.99 n/a n/a n/a
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM Call 16,500 -21.43 9,277 -15.85 n/a n/a n/a
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM Call 21,000 -30.92 11,025 -42.82 n/a n/a n/a
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM Call 30,400 -58.64 19,281 -63.18 n/a n/a n/a
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM Call 73,500 2.80 52,356 -30.34 n/a n/a n/a
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM Call 71,500 3.47 75,164 3.49 n/a n/a n/a
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM Call 69,100 -15.53 72,626 -7.75 n/a n/a n/a
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM Call 81,800 -25.84 78,732 -18.73 n/a n/a n/a
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM Call 110,300 3.86 96,875 10.84 n/a n/a n/a
2023-11-09 2023-09-30 13F REGENERON PHARMACEUTICALS COM Call 106,200 36.50 87,398 56.34 n/a n/a n/a
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM Call 77,800 3.60 55,902 -9.41 n/a n/a n/a
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM Call 75,100 -39.34 61,707 -30.91 n/a n/a n/a
2023-02-08 2022-12-31 13F REGENERON PHARMACEUTICALS COM Call 123,800 2.57 89,320 7.42 n/a n/a n/a
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM Call 120,700 5.69 83,147 23.17 n/a n/a n/a
2022-08-10 2022-06-30 13F REGENERON PHARMACEUTICALS COM Call 114,200 9.39 67,507 -7.42 n/a n/a n/a
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM Call 104,400 72.85 72,915 91.16 n/a n/a n/a
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM Call 60,400 29.74 38,144 35.39 n/a n/a n/a
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM Call 46,555 12.85 28,174 22.27 n/a n/a n/a
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM Call 41,255 8.41 23,043 27.98 n/a n/a n/a
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM Call 38,055 18,005 n/a n/a n/a
2020-07-31 2020-06-30 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-01 2020-03-31 13F REGENERON PHARMACEUTICALS COM Call 50 -87.50 24 -84.00 n/a n/a n/a
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM Call 400 700.00 150 971.43 n/a n/a n/a
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM Call 50 0.00 14 -12.50 n/a n/a n/a
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM Call 50 0.00 16 -23.81 n/a n/a n/a
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS COM Call 50 -91.23 21 -90.14 n/a n/a n/a
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS COM Call 570 -94.92 213 -95.30 n/a n/a n/a
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS COM Call 11,220 972.66 4,533 1,155.68 n/a n/a n/a
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS COM Call 1,046 -86.15 361 -86.12 n/a n/a n/a
2018-05-15 2018-03-31 13F REGENERON PHARMACEUTICALS COM Call 7,550 2,600 n/a n/a n/a
2017-11-14 2017-09-30 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-06-30 13F/A REGENERON PHARMACEUTICALS COM Call 40 20 n/a n/a n/a
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM Call 40 20 n/a n/a n/a
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM Call 200 0.00 109 17.20 n/a n/a n/a
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM Call 200 0.00 93 -8.82 n/a n/a n/a
2015-08-14 2015-06-30 13F REGENERON PHARMACEUTICALS COM Call 200 -77.78 102 -74.88 n/a n/a n/a
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM Call 900 -80.85 406 -78.94 n/a n/a n/a
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS COM Call 4,700 1,928 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F REGENERON PHARMACEUTICALS COM Put 12,600 -11.89 9,735 -11.80 n/a n/a n/a
2026-01-29 2025-12-31 13F REGENERON PHARMACEUTICALS COM Put 14,300 -35.59 11,038 -11.58 n/a n/a n/a
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM Put 22,200 0.00 12,482 7.10 n/a n/a n/a
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM Put 22,200 -62.18 11,655 -68.69 n/a n/a n/a
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM Put 58,700 -51.77 37,229 -57.06 n/a n/a n/a
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM Put 121,700 18.27 86,691 -19.86 n/a n/a n/a
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM Put 102,900 5.86 108,173 5.88 n/a n/a n/a
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM Put 97,200 -16.92 102,160 -9.28 n/a n/a n/a
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM Put 117,000 -15.16 112,611 -7.02 n/a n/a n/a
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM Put 137,900 9.62 121,116 16.99 n/a n/a n/a
2023-11-09 2023-09-30 13F REGENERON PHARMACEUTICALS COM Put 125,800 20.96 103,528 38.54 n/a n/a n/a
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM Put 104,000 -12.82 74,728 -23.77 n/a n/a n/a
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM Put 119,300 -25.30 98,025 -14.92 n/a n/a n/a
2023-02-08 2022-12-31 13F REGENERON PHARMACEUTICALS COM Put 159,700 0.76 115,222 5.53 n/a n/a n/a
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM Put 158,500 -2.34 109,186 13.81 n/a n/a n/a
2022-08-10 2022-06-30 13F REGENERON PHARMACEUTICALS COM Put 162,300 9.29 95,940 -7.50 n/a n/a n/a
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM Put 148,500 10.82 103,715 22.56 n/a n/a n/a
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM Put 134,000 62.20 84,624 69.26 n/a n/a n/a
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM Put 82,613 9.55 49,996 18.70 n/a n/a n/a
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM Put 75,413 8.33 42,121 27.88 n/a n/a n/a
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM Put 69,613 32,937 n/a n/a n/a
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS COM Put 27,500 -59.26 11,292 -55.21 n/a n/a n/a
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS COM Put 67,500 0.00 25,211 -7.56 n/a n/a n/a
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS COM Put 67,500 1.50 27,273 18.88 n/a n/a n/a
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS COM Put 66,500 0.15 22,942 0.33 n/a n/a n/a
2018-05-15 2018-03-31 13F REGENERON PHARMACEUTICALS COM Put 66,400 0.61 22,866 -7.85 n/a n/a n/a
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM Put 66,000 53.49 24,813 29.06 n/a n/a n/a
2017-11-14 2017-09-30 13F REGENERON PHARMACEUTICALS COM Put 43,000 -34.85 19,226 -40.69 n/a n/a n/a
2017-11-14 2017-06-30 13F/A REGENERON PHARMACEUTICALS COM Put 66,000 53.13 32,415 94.08 n/a n/a n/a
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM Put 66,000 32,415 n/a n/a n/a
2017-11-14 2017-03-31 13F/A REGENERON PHARMACEUTICALS COM Put 43,100 22.44 16,702 29.25 n/a n/a n/a
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM Put 43,100 16,702 n/a n/a n/a
2017-02-14 2016-12-31 13F REGENERON PHARMACEUTICALS COM Put 35,200 40.24 12,922 28.05 n/a n/a n/a
2016-11-14 2016-09-30 13F REGENERON PHARMACEUTICALS COM Put 25,100 10,091 n/a n/a n/a
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM Put 1,800 0.00 977 16.73 n/a n/a n/a
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM Put 1,800 0.00 837 -8.82 n/a n/a n/a
2015-08-14 2015-06-30 13F REGENERON PHARMACEUTICALS COM Put 1,800 -18.18 918 -7.55 n/a n/a n/a
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM Put 2,200 -90.72 993 -89.79 n/a n/a n/a
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS COM Put 23,700 9,723 n/a n/a n/a
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.