Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCapital International Inc /ca/
Latest Disclosed Ownership11,759 shares
Latest Disclosed Value $ 9,085,474
Capital International Inc /ca/ reports 5.95% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - Capital International Inc /ca/ filed a 13F-HR form disclosing ownership of 11,759 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $9,085,474 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 12,503 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -5.95% 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 REGENERON PHARMACEUTICALS COM 75886F107 11,759 -744 -5.95 9,085 -5.85 0.0700
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,503 -24,867 -66.54 9,651 -54.07 0.0759
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 37,370 -33,485 -47.26 21,012 -43.51 0.1680
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 70,855 -2,356 -3.22 37,199 -19.89 0.3613
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 73,211 2,606 3.69 46,433 -7.68 0.5631
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 70,605 6,380 9.93 50,294 -25.51 0.5932
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 64,225 2,983 4.87 67,516 4.89 0.8514
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 61,242 4,873 8.64 64,367 18.64 0.8563
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 56,369 2,801 5.23 54,255 15.32 0.7325
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 53,568 1,655 3.19 47,048 10.13 0.7335
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 51,913 8,484 19.54 42,722 36.91 0.8185
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 43,429 5,730 15.20 31,205 0.74 0.5668
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 37,699 -1,032 -2.66 30,976 10.85 0.6222
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 38,731 -1,451 -3.61 27,944 0.95 0.6031
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 40,182 -41,326 -50.70 27,680 -42.55 0.6182
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 81,508 -7,773 -8.71 48,182 -22.73 0.6683
2022-05-19 2022-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 89,281 57,745 183.11 62,356 213.09 0.6987
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 89,281 57,745 62,356 0.7182
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,536 732 2.38 19,916 6.83 0.1852
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 30,804 -2,356 -7.10 18,642 0.65 0.1798
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 33,160 -3,434 -9.38 18,521 6.97 0.1652
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 36,594 -3,781 -9.36 17,314 -11.24 0.1609
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 40,375 3,161 8.49 19,506 -6.37 0.1809
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 37,214 1,412 3.94 20,832 -6.70 0.2294
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 35,802 13,558 60.95 22,328 105.56 0.2723
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 22,244 22,244 10,862 0.1829
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 0 -11,446 -100.00 0 -100.00
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 11,446 11,446 3,583 0.2503
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.