ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in REGN — Regeneron Pharmaceuticals, Inc.
CIK 1164508
BOSTON, MA
Position in REGN
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$132,562,617
-$17,716,612 QoQ
Shares Held
171,571
-11.9% QoQ
Ownership
0.164%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
13 quarters on record
Voting authority
Sole 73.0222473494938.ToString("F0")%
Shared 0.ToString("F0")%
None 26.977752650506204.ToString("F0")%
Common Shares in REGN Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $1,767,735,657 across 48 Biotechnology names. REGN ranks #5 (7.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
638,950 | $285,316,733 | |
| 2 | INCY |
Incyte Corp
|
2,830,799 | $266,434,801 | |
| 3 | EXEL |
Exelixis, Inc.
|
4,834,625 | $207,357,066 | |
| 4 | GMAB |
Genmab A/S
|
4,975,324 | $133,487,942 | |
| 5 | REGN |
Regeneron Pharmaceuticals, Inc.
This page
|
171,571 | $132,562,617 | |
| 6 | HALO |
Halozyme Therapeutics, Inc.
|
1,918,149 | $123,969,969 | |
| 7 | RPRX |
Royalty Pharma plc
|
2,010,398 | $96,438,792 | |
| 8 | IONS |
Ionis Pharmaceuticals Inc
|
737,859 | $55,405,832 |
All Filings in REGN
Export CSV
13 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $132,562,617 | 171,571 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $150,279,229 | 194,695 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $108,284,205 | 192,584 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $3,183,075 | 6,063 | Shares | Defined | 2025-08-13 | |
| 2023-09-30 | $1,861,535 | 2,262 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $1,625,337 | 2,262 | Shares | Defined | 2023-08-14 | |
| 2022-12-31 | $1,198,394 | 1,661 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $692,314 | 1,005 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $105,541,532 | 178,542 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $25,298,867 | 36,223 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $2,913,833 | 4,614 | Shares | Defined | 2022-02-14 | |
| 2020-12-31 | $338,177 | 700 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $6,829,316 | 12,200 | Shares | Defined | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||