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D. E. Shaw & Co., Inc.

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1009207 New York, NY

Position in REGN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$23,991,948
+$6,429,842 QoQ
Shares Held
38,477
+69.3% QoQ
Ownership
0.037%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#193
of 1,322 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 83% Shared 0% None 17%

Common Shares in REGN Over Time

Shares Held

Position Value (USD)

Derivatives in REGN

reported options exposure · as of Jun 30, 2026
CallValue
$0
CallShares
0
PutValue
$4,863,612
PutShares
7,800

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 Jun 30, 2026

D. E. Shaw & Co., Inc. holds $5,017,559,982 across 217 Biotechnology names. REGN ranks #42 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in REGN

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $23,991,948 38,477
2026-06-30 $4,863,612 7,800
2026-03-31 $17,562,106 22,730
2026-03-31 $6,026,592 7,800
2025-12-31 $11,732,424 15,200
2025-12-31 $6,020,586 7,800
2025-12-31 $120,006,487 155,475
2025-09-30 $484,447,896 861,593
2025-09-30 $11,245,400 20,000
2025-09-30 $24,571,199 43,700
2025-06-30 $408,171,225 777,469
2025-06-30 $13,125,000 25,000
2025-06-30 $9,555,000 18,200
2025-03-31 $14,967,828 23,600
2025-03-31 $367,148,770 578,889
2025-03-31 $24,291,009 38,300
2024-12-31 $356,328,835 500,230
2024-12-31 $27,567,171 38,700
2024-12-31 $27,638,404 38,800
2024-09-30 $279,877,931 266,236
2024-09-30 $44,677,700 42,500
2024-06-30 $315,309 300
2024-06-30 $267,397,797 254,415
2024-03-31 $221,826,032 230,471
2023-12-31 $6,587,175 7,500
2023-12-31 $319,748,500 364,058
2023-09-30 $304,841,665 370,421
2023-06-30 $206,780,721 287,779
2023-03-31 $124,345,785 151,333
2022-12-31 $22,654,786 31,400
2022-12-31 $11,756,679 16,295
2022-12-31 $5,771,920 8,000
2022-09-30 $5,510,960 8,000
2022-09-30 $18,255,055 26,500
2022-09-30 $25,780,959 37,425
2022-06-30 $38,026,209 64,328
2022-06-30 $30,443,195 51,500
2022-06-30 $22,167,375 37,500
2022-03-31 $32,476,530 46,500
2022-03-31 $139,476,569 199,703
2022-03-31 $33,174,950 47,500
2021-12-31 $184,953,893 292,871
2021-12-31 $40,164,672 63,600
2021-12-31 $72,687,952 115,100
2021-09-30 $18,155,400 30,000
2021-09-30 $49,987,868 82,600
2021-09-30 $104,172,659 172,135
2021-06-30 $46,135,404 82,600
2021-06-30 $29,611,556 53,016
2021-06-30 $28,206,270 50,500