CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
PensionPosition in PHAT — Phathom Pharmaceuticals, Inc.
CIK 1081019
WEST SACRAMENTO, CA
Position in PHAT
as of Mar 31, 2026
· filed May 18, 2026
Position Value
$446,866
-$219,106 QoQ
Shares Held
40,222
+0.2% QoQ
Ownership
0.050%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PHAT Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $884,195,298 across 222 Biotechnology names. PHAT ranks #127 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
373,481 | $166,774,205 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
154,201 | $119,141,860 | |
| 3 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
196,863 | $65,136,060 | |
| 4 | INSM |
INSMED Inc
|
303,182 | $49,576,320 | |
| 5 | RPRX |
Royalty Pharma plc
|
759,042 | $36,411,244 | |
| 6 | INCY |
Incyte Corp
|
241,287 | $22,709,932 | |
| 7 | MRNA |
Moderna, Inc.
|
407,190 | $20,685,252 | |
| 8 | RVMD |
Revolution Medicines, Inc.
|
165,277 | $16,073,188 |
All Filings in PHAT
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $446,866 | 40,222 | Shares | Sole | 2026-05-18 | |
| 2025-12-31 | $665,972 | 40,143 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $34,027 | 2,891 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $27,705 | 2,889 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $221,092 | 35,262 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $286,327 | 35,262 | Shares | Sole | 2025-03-18 | |
| 2024-09-30 | $637,518 | 35,261 | Shares | Sole | 2025-04-04 | |
| 2024-06-30 | $299,225 | 29,051 | Shares | Sole | 2025-04-08 | |
| 2024-03-31 | $307,417 | 28,947 | Shares | Sole | 2024-05-16 | |
| 2023-12-31 | $279,286 | 30,590 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $321,324 | 30,986 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $530,856 | 37,071 | Shares | Sole | 2023-08-21 | |
| 2023-03-31 | $182,284 | 25,530 | Shares | Sole | 2023-05-09 | |
| 2022-12-31 | $281,442 | 25,084 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $268,357 | 24,220 | Shares | Sole | 2022-11-21 | |
| 2022-06-30 | $210,409 | 24,930 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $280,706 | 20,625 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $449,439 | 22,849 | Shares | Sole | 2022-02-15 | |
| 2021-09-30 | $721,383 | 22,473 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $945,701 | 27,938 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $655,910 | 17,463 | Shares | Sole | 2021-05-18 | |
| 2020-12-31 | $537,964 | 16,194 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $609,785 | 16,629 | Shares | Sole | 2020-11-17 | |
| 2020-06-30 | $547,260 | 16,629 | Shares | Sole | 2020-08-17 | |
| 2020-03-31 | $429,360 | 16,629 | Shares | Sole | 2020-05-13 | |
| No filing history on record for this holder in this stock. | ||||||