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CenterBook Partners LP

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1872738 GREENWICH, CT

Position in REGN

as of Mar 31, 2026 · filed May 5, 2026
Position Value
$3,909,558
-$19,436,422 QoQ
Shares Held
5,060
-83.3% QoQ
Ownership
0.005%
of shares outstanding
% of Portfolio
0.21%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2024
8 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)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

CenterBook Partners LP holds $104,676,185 across 36 Biotechnology names. REGN ranks #7 (3.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
7 REGN
Regeneron Pharmaceuticals, Inc.
This page
5,060 $3,909,558

All Filings in REGN

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8 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $3,909,558 5,060
2025-12-31 $23,345,980 30,246
2025-09-30 $32,174,776 57,223
2025-06-30 $27,085,275 51,591
2025-03-31 $3,623,990 5,714
2024-12-31 $11,385,882 15,984
2024-09-30 $24,985,872 23,768
2024-06-30 $4,958,759 4,718