Regeneron Pharmaceuticals, Inc.
IT ˙ ETLX ˙ US75886F1075
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityIT:4REGN / Regeneron Pharmaceuticals, Inc.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership1,478 shares
Latest Disclosed Value $ 1,141,962
Verition Fund Management LLC ownership in 4REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 1,478 shares of Regeneron Pharmaceuticals, Inc. (IT:4REGN) valued at $1,141,962 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,491 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -84.43% during the quarter.

Verition Fund Management LLC has a history of taking positions in derivatives of the underlying security (4REGN) in the form of stock options. The firm currently holds call options representing 2,000 of underlying shares valued at $1,545,280 USD and put options representing 6,700 of underlying shares valued at $5,176,688 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

IT:4REGN / Regeneron Pharmaceuticals, Inc. Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,478 -8,013 -84.43 1,142 -84.42 0.0074
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 9,491 -6,933 -42.21 7,326 -20.67 0.0288
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,424 -5,378 -24.67 9,235 -19.33 0.0381
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,802 1,678 8.34 11,446 -10.32 0.0510
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 20,124 -6,187 -23.51 12,763 -31.90 0.0595
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 26,311 25,257 2,396.30 18,742 1,591.52 0.0741
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,054 -7,499 -87.68 1,108 -87.67 0.0056
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 8,553 -4,679 -35.36 8,989 -29.41 0.0492
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,232 8,451 176.76 12,736 203.29 0.0871
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,781 4,781 4,199 0.0329
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -765 -100.00 0 -100.00
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 765 34 4.65 550 -8.50 0.0073
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 731 -12,941 -94.65 601 -93.92 0.0083
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,672 12,986 1,893.00 9,864 1,985.41 0.1541
2023-01-18 2022-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 686 -1,194 -63.51 473 -57.46 0.0053
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 686 -1,194 473 0.0044
2022-08-30 2022-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 1,880 1,322 236.92 1,112 185.13 0.0220
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,880 1,322 1,112 0.0220
2022-06-02 2022-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 558 -465 -45.45 390 -39.63 0.0047
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 558 -465 390 0.0047
2022-05-03 2021-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 1,023 -459 -30.97 646 -27.98 0.0044
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 8,823 7,341 5,572 0.0361
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,482 -779 -34.45 897 -28.98 0.0078
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,261 2,261 1,263 0.0115
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -755 -100.00 0 -100.00
2020-11-16 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 755 -144 -16.02 423 -24.60 0.0084
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 899 899 19.07 561 32.62 0.0184
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -3,528 -100.00 0 -100.00
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,528 -9,403 -72.72 1,325 -63.06 0.0241
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,931 2,437 23.22 3,587 9.19 0.0988
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 10,494 9,519 976.31 3,285 721.25 0.0924
2019-05-15 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 975 975 -90.71 400 -87.82 0.0156
2019-02-14 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -3,682 -100.00 0 -100.00
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,682 3,682 1,488 0.0533
2018-05-15 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -1,835 -100.00 0 -100.00
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,835 -88 -4.58 690 -19.77 0.0637
2017-11-14 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,923 8 0.42 860 -8.61 0.0693
2017-08-15 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,915 1,126 142.71 941 207.52 0.0914
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 789 -1,829 -69.86 306 -68.16 0.0285
2017-02-14 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,618 2,618 231.81 961 214.05 0.0829
2016-11-15 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -4,885 -100.00 0 -100.00
2016-08-15 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,885 2,405 96.98 1,706 90.83 0.2177
2016-05-13 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,480 1,868 305.23 894 169.28 0.1445
2016-02-17 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 612 128 26.45 332 47.56 0.0632
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 484 484 -20.92 225 -32.23 0.0586
2015-05-15 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -514 -100.00 0 -100.00
2015-02-13 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 514 -331 -39.17 211 -30.82 0.0473
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 845 -3,540 -80.73 305 -75.38 0.0430
2014-08-14 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,385 2,173 98.24 1,239 86.60 0.1325
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,212 1,257 131.62 664 152.47 0.1010
2014-02-14 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 955 -2,109 -68.83 263 -72.58 0.0468
2013-11-14 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,064 343 12.61 959 56.70 0.1450
2013-08-12 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,721 2,721 612 0.1123
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM Call 2,000 1,545 n/a n/a n/a
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM Call 5,000 2,625 n/a n/a n/a
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM Call 3,400 -8.11 2,422 -37.75 n/a n/a n/a
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM Call 3,700 0.00 3,890 0.03 n/a n/a n/a
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM Call 3,700 0.00 3,889 9.18 n/a n/a n/a
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM Call 3,700 32.14 3,561 44.81 n/a n/a n/a
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM Call 2,800 154.55 2,459 171.71 n/a n/a n/a
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM Call 1,100 905 n/a n/a n/a
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-01-18 2022-09-30 13F/A REGENERON PHARMACEUTICALS COM Call 500 344 n/a n/a n/a
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM Call 500 344 n/a n/a n/a
2022-08-30 2022-06-30 13F/A REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM Call 0 0 n/a n/a n/a
2022-06-02 2022-03-31 13F/A REGENERON PHARMACEUTICALS COM Call 2,800 16.67 1,956 29.02 n/a n/a n/a
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM Call 2,800 1,956 n/a n/a n/a
2022-05-03 2021-12-31 13F/A REGENERON PHARMACEUTICALS COM Call 2,400 1,516 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM Put 6,700 5,177 n/a n/a n/a
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM Put 500 0.00 281 7.25 n/a n/a n/a
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM Put 500 262 n/a n/a n/a
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM Put 900 -87.14 641 -91.29 n/a n/a n/a
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM Put 7,000 0.00 7,359 0.01 n/a n/a n/a
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM Put 7,000 0.00 7,357 9.20 n/a n/a n/a
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM Put 7,000 141.38 6,737 164.51 n/a n/a n/a
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM Put 2,900 866.67 2,547 935.37 n/a n/a n/a
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM Put 300 -72.73 247 -68.86 n/a n/a n/a
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM Put 1,100 790 n/a n/a n/a
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM Put 5,100 -5.56 3,680 -1.10 n/a n/a n/a
2023-01-18 2022-09-30 13F/A REGENERON PHARMACEUTICALS COM Put 5,400 3,720 n/a n/a n/a
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM Put 5,400 3,720 n/a n/a n/a
2022-08-30 2022-06-30 13F/A REGENERON PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM Put 0 0 n/a n/a n/a
2022-06-02 2022-03-31 13F/A REGENERON PHARMACEUTICALS COM Put 6,400 18.52 4,470 31.09 n/a n/a n/a
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM Put 6,400 4,470 n/a n/a n/a
2022-05-03 2021-12-31 13F/A REGENERON PHARMACEUTICALS COM Put 5,400 3,410 n/a n/a n/a
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.