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TWO SIGMA SECURITIES, LLC

Broker-Dealer

Position 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, 2024
CallValue
$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, 2026

TWO 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
4 REGN
Regeneron Pharmaceuticals, Inc.
This page
1,135 $876,946

All Filings in REGN

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $876,946 1,135
2025-09-30 $250,210 445
2025-06-30 $1,033,200 1,968
2025-03-31 $598,713 944
2024-12-31 $213,699 300
2024-12-31 $569,864 800
2024-12-31 $1,064,221 1,494
2024-09-30 $1,787,108 1,700
2024-09-30 $1,892,232 1,800
2024-09-30 $2,628,100 2,500
2024-06-30 $4,414,326 4,200
2024-06-30 $1,471,442 1,400
2024-03-31 $4,908,699 5,100
2024-03-31 $4,331,205 4,500
2023-12-31 $3,337,502 3,800
2023-12-31 $6,997,336 7,967
2023-12-31 $1,229,606 1,400
2023-09-30 $1,810,512 2,200
2023-09-30 $235,366 286
2023-09-30 $3,867,912 4,700
2023-06-30 $1,724,496 2,400
2023-06-30 $3,285,883 4,573
2023-06-30 $790,394 1,100
2023-03-31 $4,981,785 6,063
2023-03-31 $6,819,861 8,300
2023-03-31 $7,312,863 8,900
2022-12-31 $216,447 300
2022-09-30 $688,870 1,000
2022-09-30 $806,666 1,171
2022-09-30 $2,617,706 3,800
2022-06-30 $750,735 1,270
2022-03-31 $3,942,580 5,645
2022-03-31 $698,420 1,000
2022-03-31 $4,260,362 6,100
2021-12-31 $1,648,898 2,611
2021-12-31 $252,608 400
2021-09-30 $484,144 800
2021-09-30 $460,541 761
2021-09-30 $907,770 1,500
2021-06-30 $726,102 1,300
2021-06-30 $390,978 700
2021-06-30 $700,409 1,254
2021-03-31 $517,142 1,093
2020-12-31 $2,512,172 5,200
2020-12-31 $1,062,842 2,200
2020-12-31 $741,090 1,534
2020-09-30 $1,007,604 1,800
2020-09-30 $1,007,604 1,800
2020-09-30 $373,933 668
2020-06-30 $2,868,790 4,600