CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
PensionPosition in GOSS — Gossamer Bio, Inc.
CIK 1081019
WEST SACRAMENTO, CA
Position in GOSS
as of Mar 31, 2026
· filed May 18, 2026
Position Value
$3,421
-$33,252 QoQ
Shares Held
10,399
-12.1% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
17 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in GOSS Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $855,427,423 across 222 Biotechnology names. GOSS ranks #210 (0.0% 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 GOSS
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,421 | 10,399 | Shares | Sole | 2026-05-18 | |
| 2025-12-31 | $36,673 | 11,830 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $31,189 | 11,859 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $14,575 | 11,850 | Shares | Sole | 2025-08-14 | |
| 2023-03-31 | $29,504 | 23,416 | Shares | Sole | 2023-05-09 | |
| 2022-12-31 | $151,952 | 70,024 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $829,591 | 69,248 | Shares | Sole | 2022-11-21 | |
| 2022-06-30 | $555,567 | 66,376 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $601,437 | 69,290 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $857,354 | 75,805 | Shares | Sole | 2022-02-15 | |
| 2021-09-30 | $931,336 | 74,092 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $696,882 | 85,823 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $790,310 | 85,439 | Shares | Sole | 2021-05-18 | |
| 2020-12-31 | $829,173 | 85,747 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,064,120 | 85,747 | Shares | Sole | 2020-11-17 | |
| 2020-06-30 | $971,711 | 74,747 | Shares | Sole | 2020-08-17 | |
| 2020-03-31 | $669,006 | 65,912 | Shares | Sole | 2020-05-13 | |
| No filing history on record for this holder in this stock. | ||||||