Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership3,677 shares
Latest Disclosed Value $ 2,840,998
Quadrant Capital Group Llc reports 1.66% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 3,677 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $2,840,998 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,617 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 1.66% 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)
2026-05-13 2026-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 3,677 60 1.66 2,841 1.76 0.0849
2026-05-11 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,677 60 49 0.0369
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,617 49 1.37 2,792 39.13 0.0843
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,568 1,564 78.04 2,006 90.68 0.0652
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,004 -688 -25.56 1,052 -38.37 0.0379
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,692 1,842 216.71 1,707 182.15 0.0634
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 850 -167 -16.42 605 -43.41 0.0417
2024-11-12 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,017 -1 -0.10 1,069 0.00 0.0743
2024-08-12 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,018 51 5.27 1,070 14.95 0.0794
2024-05-15 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 967 8 0.83 931 10.45 0.0735
2024-02-08 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 959 50 5.50 842 12.57 0.0723
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 909 -2 -0.22 748 14.37 0.0749
2023-08-10 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 911 -45 -4.71 655 -16.69 0.0650
2023-05-11 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 956 123 14.77 786 30.62 0.0818
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 833 49 6.25 601 11.30 0.0681
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 784 149 23.46 540 44.00 0.0714
2022-08-09 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 635 65 11.40 375 -5.78 0.0504
2022-05-06 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 570 31 5.75 398 17.06 0.0482
2022-02-01 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 539 28 5.48 340 10.03 0.0406
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 511 53 11.57 309 20.70 0.0431
2021-08-09 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 458 24 5.53 256 24.88 0.0371
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 434 110 33.95 205 30.57 0.0333
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 324 14 4.52 157 -9.77 0.0292
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 310 22 7.64 174 -3.33 0.0379
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 288 -407 -58.56 180 -45.95 0.0398
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS Com 75886F107 695 427 159.33 333 250.53 0.0557
2020-03-19 2019-12-31 13F/A-1 REGENERON PHARMACEUTICALS Com 75886F107 268 234 688.24 95 1,257.14 0.0115
2020-02-03 2019-12-31 13F REGENERON PHARMACEUTICALS Com 75886F107 268 234 95 321.0174
2019-10-24 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 34 -474 -93.31 7 -95.45 0.0011
2019-07-24 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 508 152 42.70 154 9.22 0.0244
2019-04-29 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 356 248 229.63 141 340.63 0.0248
2019-01-17 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 108 53 96.36 32 68.42 0.0085
2018-10-29 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 55 7 14.58 19 46.15 0.0054
2018-08-08 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 48 -29 -37.66 13 -43.48 0.0046
2018-05-10 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 77 -22 -22.22 23 -23.33 0.0083
2018-01-31 2017-12-31 13F Regeneron Pharmaceuticals COM 75886F107 99 19 23.75 30 -3.23 0.0120
2017-10-13 2017-09-30 13F Regeneron Pharmaceuticals COM 75886F107 80 -16 -16.67 31 -18.42 0.0128
2017-08-14 2017-06-30 13F Regeneron Pharmaceuticals COM 75886F107 96 54 128.57 38 216.67 0.0168
2017-04-10 2017-03-31 13F Regeneron Pharmaceuticals COM 75886F107 42 -38 -47.50 12 -50.00 0.0053
2017-01-11 2016-12-31 13F Regeneron Pharmaceuticals COM 75886F107 80 8 11.11 24 -4.00 0.0120
2016-10-25 2016-09-30 13F Regeneron Pharmaceuticals COM 75886F107 72 16 28.57 25 47.06 0.0163
2016-07-28 2016-06-30 13F Regeneron Pharmaceuticals COM 75886F107 56 -71 -55.91 17 -58.54 0.0117
2016-04-27 2016-03-31 13F Regeneron Pharmaceuticals COM 75886F107 127 60 89.55 41 24.24 0.0266
2016-01-28 2015-12-31 13F Regeneron Pharmaceuticals COM 75886F107 67 -60 -47.24 33 -43.10 0.0228
2015-10-28 2015-09-30 13F Regeneron Pharmaceuticals COM 75886F107 127 -56 -30.60 58 -36.26 0.0400
2015-08-12 2015-06-30 13F Regeneron Pharmaceuticals COM 75886F107 183 183 91 0.0579
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.