Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionTraynor Capital Management, Inc.
Latest Disclosed Ownership31,466 shares
Latest Disclosed Value $ 23,577,481
Traynor Capital Management, Inc. ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Traynor Capital Management, Inc. filed a 13F-HR form disclosing ownership of 31,466 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $23,577,481 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 31,363 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 0.33% during the quarter.

Traynor Capital Management, Inc. has a history of taking positions in derivatives of the underlying security (REGN) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

MX:REGN / 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)
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,466 103 0.33 23,577 -2.61 1.3830
2026-01-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,363 755 2.47 24,208 40.66 1.2926
2025-11-03 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 30,608 1,129 3.83 17,210 9.15 0.9817
2025-08-07 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 29,479 1,623 5.83 15,769 -10.74 1.1184
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 27,856 3,066 12.37 17,667 0.05 1.4888
2025-01-17 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 24,790 2,400 10.72 17,659 -24.98 1.1796
2024-10-25 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 22,390 2,071 10.19 23,538 10.21 1.4107
2024-07-24 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 20,319 573 2.90 21,356 12.37 1.6003
2024-04-12 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 19,746 878 4.65 19,005 14.69 1.6467
2024-01-18 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,868 667 3.66 16,571 10.64 1.7024
2023-10-16 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,201 684 3.90 14,979 19.01 1.8772
2023-07-28 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,517 610 3.61 12,587 -9.40 1.5445
2023-04-21 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,907 1,153 7.32 13,892 22.22 2.0060
2023-01-27 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,754 -2,409 -13.26 11,366 -9.16 1.6028
2022-11-15 2022-09-30 13F/A-3 REGENERON PHARMACEUTICALS COM 75886F107 18,163 176 0.98 12,512 17.68 2.2339
2022-07-28 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,987 43 0.24 10,632 -15.16 1.8434
2022-04-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,944 671 3.88 12,532 14.89 1.6251
2022-02-01 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,273 2,287 15.26 10,908 20.28 1.2904
2021-10-25 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,986 1,396 10.27 9,069 14.35 1.2422
2021-07-21 2021-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 13,590 947 7.49 7,931 32.60 1.1082
2021-07-21 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,590 947 7,931 1.1082
2021-05-04 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,643 482 3.96 5,981 1.80 0.9869
2021-01-14 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,161 1,949 19.09 5,875 -0.78 1.0421
2020-10-26 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 10,212 685 7.19 5,921 -0.35 1.3551
2020-08-10 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 9,527 3,320 53.49 5,942 96.04 1.4309
2020-04-29 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,207 3,273 111.55 3,031 175.05 1.0764
2020-01-24 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,934 -14 -0.47 1,102 34.88 0.2942
2019-11-01 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,948 -103 -3.38 817 -15.42 0.2557
2019-07-26 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,051 62 2.07 966 -21.27 0.3141
2019-04-12 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,989 1,376 85.31 1,227 103.82 0.4108
2019-01-24 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,613 9 0.56 602 -7.10 0.2508
2018-10-24 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,604 -27 -1.66 648 13.29 0.2105
2018-08-03 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,631 145 9.76 572 11.94 0.2088
2018-05-01 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,486 -46 -3.00 511 -11.13 0.2074
2018-01-31 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,532 12 0.79 575 -13.01 0.2455
2017-10-27 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,520 -120 -7.32 661 -20.65 0.3144
2017-08-02 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,640 -30 -1.80 833 24.14 0.4112
2017-05-11 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,670 -65 -3.75 671 12.40 0.3748
2017-02-07 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,735 -450 -20.59 597 -25.75 0.3957
2016-11-10 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,185 -105 -4.59 804 -2.31 0.5683
2016-07-27 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,290 -245 -9.66 823 -9.86 0.6437
2016-04-18 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,535 -310 -10.90 913 -40.87 0.7276
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,845 125 4.60 1,544 22.06 1.1104
2016-02-23 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,720 25 0.93 1,265 -7.93 1.0927
2016-02-23 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,695 70 2.67 1,374 15.95 1.1472
2016-02-23 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,625 285 12.18 1,185 23.57 1.1371
2016-02-23 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,340 2,340 959 1.1152
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
(%)
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-01-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM Call 400 309 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.