Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionStevens Capital Management Lp
Latest Disclosed Ownership311 shares
Latest Disclosed Value $ 240
Stevens Capital Management Lp ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 11, 2026 - Stevens Capital Management Lp filed a 13F-HR form disclosing ownership of 311 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $240 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 0 shares of Regeneron Pharmaceuticals, Inc..

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)
2026-05-11 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 311 311 0 0.0370
2026-02-03 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -1,409 -100.00 0 0.0000
2025-11-10 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,409 1,409 1 0.1050
2025-02-11 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -452 -100.00 0 0.0000
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 452 452 0 0.0676
2024-05-08 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -418 -100.00 0 0.0000
2024-02-02 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 418 418 0 0.0915
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -1,008 -100.00 0 0.0000
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,008 230 29.56 1 0.2054
2023-02-06 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 778 -73 -8.58 1 -100.00 0.3543
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 851 152 21.75 586 41.89 0.3755
2022-08-11 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 699 699 413 0.2874
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -4,407 -100.00 0 -100.00
2022-01-28 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,407 1,745 65.55 2,783 72.75 0.6398
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,662 2,662 1,611 0.6757
2021-08-12 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -427 -100.00 0 -100.00
2021-05-11 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 427 427 202 0.1112
2021-02-08 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -18,098 -100.00 0 -100.00
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,098 18,098 10,131 3.7622
2020-02-06 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -3,283 -100.00 0 -100.00
2019-11-08 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,283 -28,955 -89.82 911 -90.97 0.0821
2019-07-31 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 32,238 31,519 4,383.73 10,090 3,320.34 0.4513
2019-05-03 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 719 719 295 0.0126
2018-05-08 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -18,613 -100.00 0 -100.00
2018-02-13 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,613 18,613 6,998 0.2715
2016-11-08 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -7,364 -100.00 0 -100.00
2016-08-12 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 7,364 7,364 0.00 2,572 0.1026
2016-05-13 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -15,022 -100.00 0 -100.00
2016-02-05 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,022 9,736 184.18 8,155 231.64 0.3209
2015-11-10 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,286 5,286 0.00 2,459 0.1129
2014-11-07 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -50,749 -100.00 0 -100.00
2014-08-12 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 50,749 25,320 99.57 14,335 104.81 0.3844
2014-02-06 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 25,429 25,429 15.92 6,999 41.88 0.2067
2013-11-12 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -21,937 -100.00 0 -100.00
2013-08-08 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,937 21,937 4,933 0.1645
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.