AMERICAN CENTURY COMPANIES INC
Position in REGN — Regeneron Pharmaceuticals, Inc.
CIK 748054
KANSAS CITY, MO
Position in REGN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$434,298,626
+$8,622,356 QoQ
Shares Held
562,097
+1.9% QoQ
Ownership
0.536%
of shares outstanding
% of Portfolio
0.23%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 87.07589615315506.ToString("F0")%
Shared 12.92410384684494.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, 2026AMERICAN CENTURY COMPANIES INC holds $3,844,311,104 across 169 Biotechnology names. REGN ranks #2 (11.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,802,363 | $596,347,845 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
This page
|
562,097 | $434,298,626 | |
| 3 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
813,285 | $363,164,283 | |
| 4 | ASND |
Ascendis Pharma A/S
|
1,397,119 | $319,563,028 | |
| 5 | INSM |
INSMED Inc
|
925,799 | $151,386,652 | |
| 6 | ARGX |
Argenx SE
|
173,700 | $126,844,425 | |
| 7 | IONS |
Ionis Pharmaceuticals Inc
|
1,663,803 | $124,934,967 | |
| 8 | CPRX |
Catalyst Pharmaceuticals, Inc.
|
4,138,416 | $102,467,180 |
All Filings in REGN
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $434,298,626 | 562,097 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $425,676,270 | 551,487 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $371,432,750 | 660,595 | Shares | Defined | 2025-11-12 | |
| 2025-06-30 | $334,242,300 | 636,652 | Shares | Defined | 2025-08-12 | |
| 2025-03-31 | $458,210,245 | 722,467 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $504,006,242 | 707,546 | Shares | Defined | 2025-02-11 | |
| 2024-09-30 | $776,335,483 | 738,495 | Shares | Defined | 2024-11-12 | |
| 2024-06-30 | $867,974,206 | 825,832 | Shares | Defined | 2024-08-07 | |
| 2024-03-31 | $848,824,743 | 881,905 | Shares | Defined | 2024-05-14 | |
| 2023-12-31 | $817,976,069 | 931,328 | Shares | Defined | 2024-02-13 | |
| 2023-06-30 | $637,106,424 | 886,668 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $790,208,255 | 961,710 | Shares | Defined | 2023-05-11 | |
| 2022-12-31 | $795,083,422 | 1,102,002 | Shares | Defined | 2023-02-13 | |
| 2022-09-30 | $811,537,769 | 1,178,071 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $695,598,040 | 1,176,726 | Shares | Defined | 2022-08-12 | |
| 2022-03-31 | $769,872,556 | 1,102,306 | Shares | Defined | 2022-05-11 | |
| 2021-12-31 | $672,528,382 | 1,064,936 | Shares | Defined | 2022-02-07 | |
| 2021-09-30 | $710,883,159 | 1,174,664 | Shares | Defined | 2021-11-10 | |
| 2021-06-30 | $645,154,473 | 1,155,073 | Shares | Defined | 2021-08-05 | |
| 2021-03-31 | $522,706,619 | 1,104,761 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $447,377,251 | 926,036 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $520,485,683 | 929,804 | Shares | Defined | 2020-11-13 | |
| 2020-06-30 | $560,331,439 | 898,471 | Shares | Defined | 2020-08-13 | |
| 2020-03-31 | $474,990,445 | 972,763 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||