Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionIeq Capital, Llc
Latest Disclosed Ownership78,302 shares
Latest Disclosed Value $ 60,499,420
Ieq Capital, Llc reports 14.08% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Ieq Capital, Llc filed a 13F-HR form disclosing ownership of 78,302 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $60,499,420 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 68,637 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 14.08% 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 78,302 9,665 14.08 60,499 14.20 0.2038
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 68,637 24,977 57.21 52,979 115.81 0.1586
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 43,660 39,747 1,015.77 24,549 1,095.13 0.0745
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,913 -4,306 -52.39 2,055 -60.59 0.0126
2025-05-14 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,219 4,381 114.15 5,213 90.64 0.0415
2025-02-03 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,838 -1,496 -28.05 2,734 -51.24 0.0264
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,334 -197 -3.56 5,608 -3.54 0.0688
2024-08-12 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,531 507 10.09 5,814 20.20 0.0782
2024-05-09 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,024 585 13.18 4,836 24.06 0.0695
2024-02-07 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,439 990 28.70 3,899 37.35 0.0649
2023-11-06 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,449 103 3.08 2,838 18.05 0.0577
2023-08-08 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,346 73 2.23 2,404 -10.60 0.0485
2023-05-02 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,273 -299 -8.37 2,689 4.35 0.0624
2023-02-06 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,572 336 10.38 2,577 15.61 0.0722
2022-11-04 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,236 744 29.86 2,229 51.32 0.0612
2022-07-27 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,492 324 14.94 1,473 -2.71 0.0446
2022-04-26 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,168 407 23.11 1,514 36.15 0.0361
2022-01-31 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,761 -63 -3.45 1,112 0.72 0.0257
2021-11-09 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,824 819 81.49 1,104 96.79 0.0293
2021-07-29 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,005 427 73.88 561 105.49 0.0165
2021-05-04 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 578 578 273 0.0113
2021-02-03 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -767 -100.00 0 -100.00
2020-11-03 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 767 1 0.13 429 -10.25 0.0231
2020-07-31 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 766 0 0.00 478 28.15 0.0310
2020-05-07 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 766 94 13.99 373 47.43 0.0299
2020-02-11 2019-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 672 672 253 0.0222
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.