TWO SIGMA SECURITIES, LLC
Broker-DealerPosition in REGN — Regeneron Pharmaceuticals, Inc.
CIK 1450144
NEW YORK, NY
Position in REGN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$876,946
+$626,736 QoQ
Shares Held
1,135
+155.1% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in REGN Over Time
Shares Held
Position Value (USD)
Derivatives in REGN
reported options exposure · as of Dec 31, 2024CallValue
$569,864
CallShares
800
PutValue
$213,699
PutShares
300
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Mar 31, 2026TWO SIGMA SECURITIES, LLC holds $12,820,189 across 97 Biotechnology names. REGN ranks #4 (6.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BMRN |
Biomarin Pharmaceutical Inc
|
22,096 | $1,248,203 | |
| 2 | INCY |
Incyte Corp
|
11,772 | $1,107,980 | |
| 3 | APLS |
Apellis Pharmaceuticals, Inc.
|
23,779 | $956,629 | |
| 4 | REGN |
Regeneron Pharmaceuticals, Inc.
This page
|
1,135 | $876,946 | |
| 5 | TERN |
Terns Pharmaceuticals, Inc.
|
11,908 | $627,789 | |
| 6 | PSTV |
Plus Therapeutics, Inc.
|
142,812 | $580,530 | |
| 7 | ABVX |
Abivax S.A.
|
3,936 | $438,273 | |
| 8 | SYRE |
Spyre Therapeutics, Inc.
|
6,851 | $345,564 |
All Filings in REGN
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $876,946 | 1,135 | Shares | Sole | 2026-05-15 | |
| 2025-09-30 | $250,210 | 445 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $1,033,200 | 1,968 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $598,713 | 944 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $213,699 | 300 | Put | Sole | 2025-02-14 | |
| 2024-12-31 | $569,864 | 800 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $1,064,221 | 1,494 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $1,787,108 | 1,700 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $1,892,232 | 1,800 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $2,628,100 | 2,500 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $4,414,326 | 4,200 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $1,471,442 | 1,400 | Call | Sole | 2024-08-14 | |
| 2024-03-31 | $4,908,699 | 5,100 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $4,331,205 | 4,500 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $3,337,502 | 3,800 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $6,997,336 | 7,967 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $1,229,606 | 1,400 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $1,810,512 | 2,200 | Call | Sole | 2023-11-14 | |
| 2023-09-30 | $235,366 | 286 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $3,867,912 | 4,700 | Put | Sole | 2023-11-14 | |
| 2023-06-30 | $1,724,496 | 2,400 | Put | Sole | 2023-08-14 | |
| 2023-06-30 | $3,285,883 | 4,573 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $790,394 | 1,100 | Call | Sole | 2023-08-14 | |
| 2023-03-31 | $4,981,785 | 6,063 | Shares | Sole | 2023-05-15 | |
| 2023-03-31 | $6,819,861 | 8,300 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $7,312,863 | 8,900 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $216,447 | 300 | Call | Sole | 2023-02-14 | |
| 2022-09-30 | $688,870 | 1,000 | Put | Sole | 2022-11-14 | |
| 2022-09-30 | $806,666 | 1,171 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $2,617,706 | 3,800 | Call | Sole | 2022-11-14 | |
| 2022-06-30 | $750,735 | 1,270 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $3,942,580 | 5,645 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $698,420 | 1,000 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $4,260,362 | 6,100 | Put | Sole | 2022-05-16 | |
| 2021-12-31 | $1,648,898 | 2,611 | Shares | Sole | 2022-02-14 | |
| 2021-12-31 | $252,608 | 400 | Put | Sole | 2022-02-14 | |
| 2021-09-30 | $484,144 | 800 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $460,541 | 761 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $907,770 | 1,500 | Call | Sole | 2021-11-15 | |
| 2021-06-30 | $726,102 | 1,300 | Call | Sole | 2021-08-16 | |
| 2021-06-30 | $390,978 | 700 | Put | Sole | 2021-08-16 | |
| 2021-06-30 | $700,409 | 1,254 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $517,142 | 1,093 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $2,512,172 | 5,200 | Call | Sole | 2021-02-16 | |
| 2020-12-31 | $1,062,842 | 2,200 | Put | Sole | 2021-02-16 | |
| 2020-12-31 | $741,090 | 1,534 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,007,604 | 1,800 | Put | Sole | 2020-11-16 | |
| 2020-09-30 | $1,007,604 | 1,800 | Call | Sole | 2020-11-16 | |
| 2020-09-30 | $373,933 | 668 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $2,868,790 | 4,600 | Call | Sole | 2020-09-10 | |
| No filing history on record for this holder in this stock. | ||||||