Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionResources Investment Advisors, LLC.
Latest Disclosed Ownership528 shares
Latest Disclosed Value $ 408,100
Resources Investment Advisors, LLC. reports 7.21% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 8, 2026 - Resources Investment Advisors, LLC. filed a 13F-HR form disclosing ownership of 528 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $408,100 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 569 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -7.21% 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)
2026-05-08 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 528 -41 -7.21 408 -7.06 0.0040
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 569 38 7.16 439 47.32 0.0043
2025-11-10 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 531 -52 -8.92 299 -2.61 0.0031
2025-08-07 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 583 39 7.17 306 -11.30 0.0034
2025-04-29 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 544 -418 -43.45 345 -49.64 0.0041
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 962 -44 -4.37 685 -35.19 0.0079
2024-11-06 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,006 -4 -0.40 1,057 -0.38 0.0121
2024-08-02 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,010 181 21.83 1,061 33.12 0.0133
2024-05-10 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 829 354 74.53 798 91.13 0.0125
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 475 49 11.50 417 19.14 0.0073
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 426 -155 -26.68 351 -16.07 0.0076
2023-08-07 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 581 -37 -5.99 418 -17.75 0.0092
2023-05-10 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 618 -71 -10.30 508 2.01 0.0119
2023-02-02 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 689 -295 -29.98 497 -26.70 0.0144
2022-11-08 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 984 623 172.58 678 218.31 0.0251
2022-08-08 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 361 -11 -2.96 213 -18.08 0.0091
2022-05-05 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 372 -2 -0.53 260 10.17 0.0098
2022-02-23 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 374 -3 -0.80 236 3.51 0.0084
2021-11-05 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 377 -30 -7.37 228 0.44 0.0090
2021-08-09 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 407 407 227 0.0093
2021-05-10 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -594 -100.00 0 -100.00
2021-02-08 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 594 137 29.98 287 12.11 0.0149
2020-10-09 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 457 457 -23.06 256 -10.80 0.0177
2019-11-08 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -294 -100.00 0 -100.00
2019-08-12 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 294 205 230.34 92 148.65 0.0071
2019-05-10 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 89 -10 -10.10 37 0.00 0.0054
2019-02-12 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 99 99 11.24 37 0.00 0.0062
2018-11-07 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -201 -100.00 0 -100.00
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 201 -4 -1.95 69 -2.82 0.0145
2018-05-14 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 205 90 78.26 71 65.12 0.0156
2018-01-31 2017-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 115 -10 -8.00 43 -23.21 0.0049
2017-11-13 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 125 -6 -4.58 56 -12.50 0.0206
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 131 131 64 0.0191
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.