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BLAIR WILLIAM & CO/IL

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 902367 CHICAGO, IL

Position in REGN

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$1,486,519
+$432,639 QoQ
Shares Held
2,384
+74.8% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#577
of 1,322 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 75% Shared 0% None 25%

Common Shares in REGN Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $157,670,224 across 60 Biotechnology names. REGN ranks #18 (0.9% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in REGN

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,486,519 2,384
2026-03-31 $1,053,880 1,364
2025-12-31 $1,001,887 1,298
2025-09-30 $713,520 1,269
2025-06-30 $659,925 1,257
2025-03-31 $813,082 1,282
2024-12-31 $893,974 1,255
2024-09-30 $2,147,683 2,043
2024-06-30 $2,086,294 1,985
2024-03-31 $1,948,079 2,024
2023-12-31 $1,770,632 2,016
2023-09-30 $1,283,817 1,560
2023-06-30 $1,282,593 1,785
2023-03-31 $1,617,046 1,968
2022-12-31 $1,717,867 2,381
2022-09-30 $859,709 1,248
2022-06-30 $666,203 1,127
2022-03-31 $999,439 1,431
2021-12-31 $763,507 1,209
2021-09-30 $1,037,278 1,714
2021-06-30 $1,028,830 1,842
2021-03-31 $843,608 1,783
2020-12-31 $604,370 1,251
2020-09-30 $851,425 1,521
2020-06-30 $840,680 1,348
2020-03-31 $590,830 1,210