Position in VRTX
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$1,787,866,229
-$40,772,664 QoQ
Shares Held
4,003,821
-0.7% QoQ
Ownership
1.58%
of shares outstanding
% of Portfolio
2.47%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 83.7414809503222.ToString("F0")%
Shared 0.ToString("F0")%
None 16.258519049677794.ToString("F0")%
Common Shares in VRTX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026LOOMIS SAYLES & CO L P holds $4,075,180,510 across 25 Biotechnology names. VRTX ranks #1 (43.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
This page
|
4,003,821 | $1,787,866,229 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,912,310 | $1,477,527,197 | |
| 3 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
512,097 | $169,437,533 | |
| 4 | LGND |
Ligand Pharmaceuticals Inc
|
353,209 | $70,518,176 | |
| 5 | CRSP |
CRISPR Therapeutics AG
|
968,135 | $46,054,181 | |
| 6 | MIRM |
Mirum Pharmaceuticals, Inc.
|
475,324 | $43,910,430 | |
| 7 | AXSM |
Axsome Therapeutics, Inc.
|
256,625 | $43,374,756 | |
| 8 | RYTM |
Rhythm Pharmaceuticals, Inc.
|
465,102 | $40,449,920 |
All Filings in VRTX
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,787,866,229 | 4,003,821 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $1,828,638,893 | 4,033,525 | Shares | Defined | 2026-02-12 | |
| 2025-09-30 | $1,614,390,209 | 4,122,128 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $1,697,715,885 | 3,813,378 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $1,817,265,835 | 3,748,331 | Shares | Defined | 2025-05-14 | |
| 2024-12-31 | $1,519,302,129 | 3,772,789 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $1,426,964,966 | 3,068,214 | Shares | Defined | 2024-11-13 | |
| 2024-06-30 | $1,472,798,390 | 3,142,171 | Shares | Defined | 2024-08-13 | |
| 2024-03-31 | $1,300,190,007 | 3,110,428 | Shares | Defined | 2024-05-14 | |
| 2023-12-31 | $1,275,539,929 | 3,134,852 | Shares | Defined | 2024-02-13 | |
| 2023-09-30 | $1,100,064,361 | 3,163,468 | Shares | Defined | 2023-11-09 | |
| 2023-06-30 | $1,152,614,341 | 3,275,310 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $1,062,304,504 | 3,371,646 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $1,085,573,112 | 3,759,170 | Shares | Defined | 2023-02-10 | |
| 2022-09-30 | $1,204,020,240 | 4,158,390 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $1,256,145,427 | 4,457,736 | Shares | Defined | 2022-08-05 | |
| 2022-03-31 | $1,667,343,331 | 6,389,023 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $1,457,101,558 | 6,635,253 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $1,270,816,888 | 7,005,992 | Shares | Defined | 2021-11-12 | |
| 2021-06-30 | $413,517,522 | 2,050,873 | Shares | Defined | 2021-08-13 | |
| 2021-03-31 | $214,030 | 996 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $43,959 | 186 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $170,347 | 626 | Shares | Defined | 2020-11-12 | |
| 2020-06-30 | $135,574 | 467 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $120,878 | 508 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||