Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionEverSource Wealth Advisors, LLC
Latest Disclosed Ownership1,880 shares
Latest Disclosed Value $ 1,451,955
EverSource Wealth Advisors, LLC reports 37.93% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - EverSource Wealth Advisors, LLC filed a 13F-HR/A form disclosing ownership of 1,880 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $1,451,955 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 1,363 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 37.93% 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)
2026-05-15 2026-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM Stock 75886F107 1,880 517 37.93 1,452 38.06 0.0067
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 36,332 34,969 1,549 0.0085
2026-02-06 2025-12-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 1,363 326 31.44 1,052 80.58 0.0387
2025-11-10 2025-09-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 1,037 616 146.32 583 164.55 0.0231
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 421 -122 -22.47 221 -36.05 0.0100
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 543 73 15.53 344 2.99 0.0189
2025-02-10 2024-12-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 470 -160 -25.40 335 -49.55 0.0188
2024-11-08 2024-09-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 630 -5 -0.79 662 -3.36 0.0419
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 635 119 23.06 685 49.24 0.0455
2024-06-11 2024-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM Stock 75886F107 516 -9 -1.71 460 -0.43 0.0361
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 525 0 461 0.0163
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 525 -39 -6.91 461 -0.65 0.0422
2023-11-03 2023-09-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 564 83 17.26 464 34.49 0.0492
2023-08-04 2023-06-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 481 62 14.80 346 0.29 0.0381
2023-05-11 2023-03-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 419 -4 -0.95 344 12.79 0.0429
2023-02-09 2022-12-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 423 156 58.43 305 64.86 0.0462
2022-11-07 2022-09-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 267 -22 -7.61 185 7.56 0.0424
2022-08-01 2022-06-30 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 289 122 73.05 172 47.01 0.0443
2022-05-25 2022-03-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 167 15 9.87 117 21.88 0.0297
2022-02-17 2021-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM Stock 75886F107 152 152 96 0.0269
2022-02-07 2021-12-31 13F REGENERON PHARMACEUTICALS COM Stock 75886F107 152 152 96 0.0269
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.