Regeneron Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US75886F1075

SecurityREGN / Regeneron Pharmaceuticals, Inc.
InstitutionPacer Advisors, Inc.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Pacer Advisors, Inc. closes position in REGN / Regeneron Pharmaceuticals, Inc.

On May 6, 2026 - Pacer Advisors, Inc. filed a 13F-HR form disclosing ownership of 0 shares of Regeneron Pharmaceuticals, Inc. (US:REGN) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 24, 2026 disclosing 397,666 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

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)
2026-05-06 2026-03-31 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 0 -397,666 -100.00 0 -100.00
2026-02-24 2025-12-31 13F/A-1 Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 397,666 -47,659 -10.70 306,946 22.59 0.7841
2025-10-15 2025-09-30 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 445,325 191 0.04 250,393 7.14 0.6305
2025-08-12 2025-06-30 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 445,134 37,764 9.27 233,695 -9.55 0.5809
2025-05-06 2025-03-31 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 407,370 390,374 2,296.86 258,366 2,034.20 0.6047
2025-01-22 2024-12-31 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 16,996 -2,544 -13.02 12,107 -41.06 0.0261
2024-11-12 2024-09-30 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 19,540 3,076 18.68 20,541 18.71 0.0434
2024-08-13 2024-06-30 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 16,464 1,434 9.54 17,304 19.62 0.0392
2024-05-10 2024-03-31 13F Regeneron Pharmaceuticals Common Stock - Domestic 75886F107 15,030 904 6.40 14,466 16.60 0.0333
2024-01-16 2023-12-31 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 14,126 1,845 15.02 12,407 22.76 0.0351
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 12,281 1,608 15.07 10,107 31.79 0.0387
2023-07-12 2023-06-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 10,673 -2,362 -18.12 7,669 -28.40 0.0309
2023-05-02 2023-03-31 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 13,035 6,810 109.40 10,710 138.48 0.0458
2023-02-06 2022-12-31 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 6,225 -256,440 -97.63 4,491 -97.52 0.0230
2022-10-18 2022-09-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 262,665 41,988 19.03 180,942 38.71 1.2605
2022-08-12 2022-06-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 220,677 95,310 76.02 130,449 48.98 0.9688
2022-04-05 2022-03-31 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 125,367 76,354 155.78 87,559 182.88 0.7178
2022-02-03 2021-12-31 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 49,013 38,907 384.99 30,953 406.10 0.3175
2021-10-15 2021-09-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 10,106 -463 -4.38 6,116 3.61 0.0772
2021-07-21 2021-06-30 13F REGENERON PHARMACEUTICALS Common Stock - Domestic 75886F107 10,569 484 4.80 5,903 23.70 0.0845
2021-04-05 2021-03-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 10,085 -526 -4.96 4,772 -6.91 0.0829
2021-01-20 2020-12-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 10,611 -5,218 -32.96 5,126 -42.15 0.0963
2020-10-19 2020-09-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 15,829 -1,556 -8.95 8,861 -18.27 0.1885
2020-07-29 2020-06-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 17,385 8,625 98.46 10,842 117.58 0.2195
2020-04-23 2020-03-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 8,760 257 3.02 4,983 56.06 0.1003
2020-02-10 2019-12-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 8,503 -21,171 -71.35 3,193 -61.21 0.1442
2019-10-10 2019-09-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 29,674 2,454 9.02 8,232 -3.38 0.1851
2019-08-12 2019-06-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 27,220 14,194 108.97 8,520 59.31 0.2083
2019-04-10 2019-03-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 13,026 13,026 5,348 0.1484
2019-02-13 2018-12-31 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 0 -9,038 -100.00 0 -100.00
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 9,038 2,003 28.47 3,652 50.47 0.1375
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS Common Stock 75886F107 7,035 1,258 21.78 2,427 22.02 0.1098
2018-05-14 2018-03-31 13F Regeneron Pharmaceuticals COM 75886F107 5,777 874 17.83 1,989 7.92 0.1100
2018-02-14 2017-12-31 13F Regeneron Pharmaceuticals Com 75886F107 4,903 1,516 44.76 1,843 21.73 0.1293
2017-11-08 2017-09-30 13F Regeneron Pharmaceuticals Com 75886F107 3,387 434 14.70 1,514 4.41 0.1342
2017-08-08 2017-06-30 13F REGENERON PHARMACEUTICALS Com 75886F107 2,953 362 13.97 1,450 44.42 0.1434
2017-05-09 2017-03-31 13F REGENERON PHARMACEUTICALS Com 75886F107 2,591 122 4.94 1,004 10.82 0.1231
2017-02-08 2016-12-31 13F REGENERON PHARMACEUTICALS Com 75886F107 2,469 -50 -1.98 906 -10.56 0.1291
2016-11-10 2016-09-30 13F REGENERON PHARMACEUTICALS Com 75886F107 2,519 -104 -3.96 1,013 10.59 0.1540
2016-08-12 2016-06-30 13F REGENERON PHARMACEUTICALS Com 75886F107 2,623 -66 -2.45 916 -5.57 0.1446
2016-05-13 2016-03-31 13F REGENERON PHARMACEUTICALS Com 75886F107 2,689 99 3.82 970 -31.01 0.2201
2016-02-17 2015-12-31 13F REGENERON PHARMACEUTICALS Com 75886F107 2,590 2,590 1,406 0.3303
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.