Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionTocqueville Asset Management L.p.
Latest Disclosed Ownership15,779 shares
Latest Disclosed Value $ 12,191,492
Tocqueville Asset Management L.p. reports 66.30% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 12, 2026 - Tocqueville Asset Management L.p. filed a 13F-HR form disclosing ownership of 15,779 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $12,191,492 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 46,824 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -66.30% 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)
2026-05-12 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,779 -31,045 -66.30 12,191 -66.27 0.1808
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 46,824 -7,394 -13.64 36,142 18.56 0.5272
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 54,218 -6,884 -11.27 30,485 -4.97 0.4432
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 61,102 -24,827 -28.89 32,079 -41.14 0.4883
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 85,929 85,929 54,499 0.8899
2018-05-14 2018-03-31 13F Regeneron Pharmaceuticals COM 75886F107 0 -10,138 -100.00 0 -100.00
2018-02-13 2017-12-31 13F Regeneron Pharmaceuticals COM 75886F107 10,138 -240 -2.31 3,811 -17.87 0.0433
2017-10-30 2017-09-30 13F Regeneron Pharmaceuticals COM 75886F107 10,378 -282 -2.65 4,640 -11.38 0.0534
2017-08-04 2017-06-30 13F Regeneron Pharms COM 75886F107 10,660 0 0.00 5,236 26.75 0.0628
2017-04-28 2017-03-31 13F Regeneron Pharms COM 75886F107 10,660 -4,735 -30.76 4,131 -26.90 0.0504
2017-01-30 2016-12-31 13F Regeneron Pharms COM 75886F107 15,395 130 0.85 5,651 -7.92 0.0723
2016-10-31 2016-09-30 13F Regeneron Pharms COM 75886F107 15,265 2,725 21.73 6,137 40.15 0.0737
2016-08-15 2016-06-30 13F/A-1 Regeneron Pharms COM 75886F107 12,540 -890 -6.63 4,379 -9.54 0.0522
2016-07-29 2016-06-30 13F Regeneron Pharms COM 75886F107 12,540 4,379
2016-04-29 2016-03-31 13F Regeneron Pharmaceuticals COM 75886F107 13,430 -11,390 -45.89 4,841 -64.07 0.0641
2016-01-29 2015-12-31 13F Regeneron Pharmaceuticals COM 75886F107 24,820 -270 -1.08 13,474 15.46 0.1827
2015-10-30 2015-09-30 13F Regeneron Pharmaceuticals COM 75886F107 25,090 8,445 50.74 11,670 37.44 0.1561
2015-07-31 2015-06-30 13F Regeneron Pharmaceuticals COM 75886F107 16,645 325 1.99 8,491 15.24 0.1000
2015-04-30 2015-03-31 13F Regeneron Pharmaceuticals COM 75886F107 16,320 16,320 0.00 7,368 0.0866
2015-01-30 2014-12-31 13F Regeneron Pharmaceuticals COM 75886F107 0 -17,205 -100.00 0 -100.00
2014-10-30 2014-09-30 13F Regeneron Pharmaceuticals COM 75886F107 17,205 -225 -1.29 6,203 26.00 0.0688
2014-09-18 2014-06-30 13F/A-1 Regeneron Pharmaceuticals COM 75886F107 17,430 500 2.95 4,923 -3.17 0.0479
2014-07-30 2014-06-30 13F Regeneron Pharmaceuticals COM 75886F107 17,430 4,923
2014-04-30 2014-03-31 13F Regeneron Pharmaceuticals COM 75886F107 16,930 100 0.59 5,084 9.76 0.0669
2014-01-30 2013-12-31 13F Regeneron Pharmaceuticals COM 75886F107 16,830 1,635 10.76 4,632 -2.57 0.0623
2013-10-30 2013-09-30 13F Regeneron Pharmaceuticals COM 75886F107 15,195 5,770 61.22 4,754 124.35 0.0593
2013-07-30 2013-06-30 13F Regeneron Pharmaceuticals COM 75886F107 9,425 9,425 2,119 0.0287
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.