Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionWealthfront Advisers Llc
Latest Disclosed Ownership8,344 shares
Latest Disclosed Value $ 6,446,908
Wealthfront Advisers Llc reports 2.48% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 5, 2026 - Wealthfront Advisers Llc filed a 13F-HR form disclosing ownership of 8,344 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $6,446,908 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 8,142 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 2.48% 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)
2026-05-05 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,344 202 2.48 6,447 2.58 0.0142
2026-01-30 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,142 2,202 37.07 6,285 88.20 0.0140
2025-11-06 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,940 1,325 28.71 3,340 37.86 0.0078
2025-07-31 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,615 -1,560 -25.26 2,423 -38.15 0.0062
2025-05-02 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,175 -1,173 -15.96 3,916 -25.18 0.0105
2025-04-01 2024-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 7,348 -2,141 -22.56 5,234 -47.53 0.0153
2025-02-07 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,990 6,501 764 0.0023
2024-11-12 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,489 -97 -1.01 9,975 -0.99 0.0307
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,586 -154 -1.58 10,075 7.48 0.0339
2024-04-19 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,740 129 1.34 9,375 11.05 0.0328
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,611 145 1.53 8,441 8.36 0.0324
2023-11-01 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,466 -1,179 -11.08 7,790 1.86 0.0335
2023-08-07 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 10,645 -5,943 -35.83 7,649 -43.88 0.0324
2023-04-28 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,588 6,294 61.14 13,630 83.51 0.0619
2023-02-10 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,294 -75 -0.72 7,427 3.98 0.0360
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 10,369 1,749 20.29 7,143 40.17 0.0380
2022-07-20 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 8,620 4,881 130.54 5,096 95.17 0.0256
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,739 40 1.08 2,611 11.77 0.0114
2022-01-21 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,699 130 3.64 2,336 8.15 0.0099
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,569 76 2.18 2,160 10.71 0.0100
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,493 -2,990 -46.12 1,951 -36.39 0.0093
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,483 -1,221 -15.85 3,067 -17.60 0.0164
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 7,704 3,301 74.97 3,722 50.99 0.0224
2020-11-16 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,403 -678 -13.34 2,465 -22.22 0.0176
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,081 4,205 480.02 3,169 640.42 0.0246
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 876 165 23.21 428 60.30 0.0039
2020-01-21 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 711 711 267 0.0020
2019-10-15 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -1,324 -100.00 0 -100.00
2019-08-13 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,324 -166 -11.14 414 -32.35 0.0036
2019-05-13 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,490 439 41.77 612 55.73 0.0057
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,051 1,051 393 0.0042
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.