Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionNomura Asset Management Co Ltd
Latest Disclosed Ownership53,934 shares
Latest Disclosed Value $ 41,671,567
Nomura Asset Management Co Ltd reports 0.97% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 11, 2026 - Nomura Asset Management Co Ltd filed a 13F-HR form disclosing ownership of 53,934 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $41,671,567 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 53,417 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 0.97% 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)
2026-05-11 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 53,934 517 0.97 41,672 1.07 0.0673
2026-02-10 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 53,417 -374 -0.70 41,231 36.32 0.1044
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 53,791 -2,223 -3.97 30,245 2.85 0.0789
2025-08-11 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 56,014 -37,278 -39.96 29,407 -50.30 0.0806
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 93,292 778 0.84 59,169 -10.22 0.1811
2025-02-12 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 92,514 6,510 7.57 65,900 -27.11 0.1983
2024-11-15 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 86,004 3,698 4.49 90,411 4.51 0.2787
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 82,306 6,978 9.26 86,506 19.32 0.2948
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 75,328 16,405 27.84 72,502 40.10 0.2632
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 58,923 1,439 2.50 51,751 9.39 0.2139
2023-11-03 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 57,484 1,671 2.99 47,307 17.96 0.2217
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 55,813 -1,556 -2.71 40,104 -14.92 0.1847
2025-01-10 2023-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 57,369 -9,684 -14.44 47,138 -2.56 0.2477
2023-05-11 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 57,369 -9,684 47,138 0.2477
2025-01-10 2022-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 67,053 -2,159 -3.12 48,378 1.47 0.2810
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 67,053 -2,159 48,378 0.2810
2025-01-10 2022-09-30 13F/A-3 REGENERON PHARMACEUTICALS COM 75886F107 69,212 -5,034 -6.78 47,678 8.63 0.3035
2022-11-14 2022-09-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 69,212 -5,034 47,678 0.3035
2022-11-10 2022-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 69,212 -5,034 47,678 0.3035
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 69,212 -5,034 47,678 0.1919
2025-01-10 2022-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 74,246 14,676 24.64 43,889 5.49 0.2741
2022-08-12 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 74,246 14,676 43,889 0.2707
2025-01-10 2022-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 59,570 1,817 3.15 41,605 14.07 0.2264
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 59,570 1,817 41,605 0.2264
2025-01-10 2021-12-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 57,753 3,409 6.27 36,472 10.90 0.1842
2022-02-01 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 57,753 3,409 36,472 0.1842
2025-01-10 2021-09-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 54,344 -11,836 -17.88 32,888 -11.03 0.1856
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 54,344 -11,836 32,888 0.1856
2025-01-10 2021-06-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 66,180 -2,253 -3.29 36,964 14.16 0.2140
2021-08-06 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 66,180 -2,253 36,964 0.2140
2025-01-10 2021-03-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 68,433 9,818 16.75 32,378 14.34 0.2063
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 68,433 9,818 32,378 0.2064
2025-01-10 2020-12-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 58,615 7,283 14.19 28,317 -1.45 0.1905
2021-02-12 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 58,615 7,283 28,317 0.1905
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 51,332 2,873 5.93 28,734 -4.92 0.2206
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 48,459 23,358 93.06 30,222 146.57 0.2557
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 25,101 -941 -3.61 12,257 25.35 0.1267
2020-02-13 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 26,042 2,123 8.88 9,778 47.37 0.0876
2019-11-13 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 23,919 2,894 13.76 6,635 0.82 0.0634
2019-08-13 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,025 -124,395 -85.54 6,581 -88.98 0.0650
2019-05-10 2019-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 145,420 128,551 762.05 59,712 847.81 0.5868
2019-05-10 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 145,420 128,551 59,712
2019-02-12 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,869 -459 -2.65 6,300 -10.01 0.0704
2018-11-07 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,328 -1,126 -6.10 7,001 9.97 0.0679
2018-08-03 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,454 516 2.88 6,366 3.04 0.0661
2018-05-14 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,938 436 2.49 6,178 -6.11 0.0675
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,502 492 2.89 6,580 -13.49 0.0762
2017-11-13 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,010 151 0.90 7,606 -8.14 0.0982
2017-08-14 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,859 621 3.82 8,280 31.60 0.1114
2017-06-28 2017-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 16,238 229 1.43 6,292 7.06 0.0886
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,238 6,292
2017-02-14 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,009 -1,369 -7.88 5,877 -15.87 0.1059
2016-11-10 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,378 1,827 11.75 6,986 28.63 0.1253
2016-08-12 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,551 -3,367 -17.80 5,431 -20.35 0.1016
2016-05-13 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,918 6,881 57.17 6,819 4.35 0.1299
2016-02-12 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,037 -528 -4.20 6,535 11.82 0.1264
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,565 347 2.84 5,844 -6.24 0.1171
2015-08-14 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,218 -287 -2.30 6,233 10.40 0.1153
2015-05-13 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,505 266 2.17 5,646 12.97 0.1006
2015-02-13 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,239 -125 -1.01 4,998 12.14 0.0873
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,364 706 6.06 4,457 35.35 0.0788
2014-08-14 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,658 636 5.77 3,293 -0.51 0.0609
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 11,022 -1,513 -12.07 3,310 -4.06 0.0605
2014-02-14 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,535 630 5.29 3,450 -7.38 0.0620
2013-11-13 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,905 14 0.12 3,725 39.30 0.0705
2013-08-13 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,891 11,891 2,674 0.0530
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.