Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionMeeder Asset Management Inc
Latest Disclosed Ownership6,094 shares
Latest Disclosed Value $ 4,708,469
Meeder Asset Management Inc reports 12.37% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 7, 2026 - Meeder Asset Management Inc filed a 13F-HR form disclosing ownership of 6,094 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $4,708,469 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,423 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 12.37% 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)
2026-05-07 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,094 671 12.37 4,708 12.50 0.2697
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,423 893 19.71 4,186 64.31 0.2256
2025-10-24 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,530 -1,106 -19.62 2,547 -13.89 0.1452
2025-08-07 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,636 5,616 28,080.00 2,959 24,550.00 0.1817
2025-05-07 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 20 -10 -33.33 13 -42.86 0.0009
2025-02-12 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 30 -174 -85.29 21 -90.19 0.0015
2024-11-07 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 204 177 655.56 214 664.29 0.0143
2024-08-08 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 27 -214 -88.80 28 -87.88 0.0020
2024-05-07 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 241 241 232 0.0146
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -16 -100.00 0 -100.00
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16 -4,811 -99.67 11 -99.72 0.0008
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,827 -33 -0.68 3,966 13.12 0.3165
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,860 -1,212 -19.96 3,506 -16.16 0.3069
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 6,072 -1,021 -14.39 4,182 -0.29 0.2411
2022-08-08 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 7,093 2,255 46.61 4,194 24.12 0.2434
2022-05-10 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,838 -9,753 -66.84 3,379 -63.33 0.1247
2022-05-10 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,483 4,528
2022-02-11 2021-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCKS 75886F107 14,591 -2,192 -13.06 9,215 -9.28 0.9265
2021-11-08 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,783 1,565 10.28 10,158 19.51 0.5329
2021-08-09 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,218 -1,860 -10.89 8,500 5.20 0.3966
2021-04-28 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,078 16,682 4,212.63 8,080 4,130.37 0.4137
2021-02-09 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 396 -4,429 -91.79 191 -92.93 0.0423
2020-11-02 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,825 64 1.34 2,700 -9.09 0.1747
2020-08-11 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,761 -9 -0.19 2,970 27.47 0.1933
2020-05-15 2020-03-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 4,770 -5,102 -51.68 2,330 -37.13 0.1811
2020-02-13 2019-12-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 9,872 9,204 1,377.84 3,706 1,903.24 0.2264
2019-10-17 2019-09-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 668 -369 -35.58 185 -43.08 0.0123
2019-08-05 2019-06-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 1,037 -13,279 -92.76 325 -94.47 0.0227
2019-04-16 2019-03-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 14,316 1,341 10.34 5,877 21.28 0.4641
2019-01-17 2018-12-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 12,975 4,858 59.85 4,846 47.70 0.4322
2018-11-02 2018-09-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 8,117 6,426 380.01 3,281 -99.44 0.2461
2018-07-24 2018-06-30 13F Regeneron Pharmaceut Common Stock 75886F107 1,691 799 89.57 583,379 189,925.73 0.0503
2018-05-03 2018-03-31 13F Regeneron Pharmaceut Common Stock 75886F107 892 -567 -38.86 307 -44.08 0.0285
2018-02-02 2017-12-31 13F Regeneron Pharmaceut Common Stock 75886F107 1,459 -1,661 -53.24 549 -60.67 0.0467
2017-10-20 2017-09-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 3,120 1,812 138.53 1,396 117.45 0.1520
2017-07-13 2017-06-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 1,308 1,308 642 0.0612
2017-01-11 2016-12-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 0 -217 -100.00 0 -100.00
2016-10-19 2016-09-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 217 217 0.00 87 0.0074
2016-07-22 2016-06-30 13F Regeneron Pharmaceuticals Common Stock 75886F107 0 -352 -100.00 0 -100.00
2016-05-12 2016-03-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 352 -622 -63.86 127 -75.99 0.0119
2016-01-15 2015-12-31 13F Regeneron Pharmaceuticals Common Stock 75886F107 974 974 529 0.0478
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.