CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in PHAT — Phathom Pharmaceuticals, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in PHAT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$4,544,156
-$2,057,170 QoQ
Shares Held
409,015
+2.8% QoQ
Ownership
0.513%
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, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $6,185,699,337 across 288 Biotechnology names. PHAT ranks #138 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,920,871 | $857,745,736 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
804,508 | $621,595,061 | |
| 3 | MRNA |
Moderna, Inc.
|
4,734,356 | $240,505,284 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
673,356 | $222,793,299 | |
| 5 | INSM |
INSMED Inc
|
1,069,390 | $174,866,652 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
1,735,476 | $168,775,041 | |
| 7 | INCY |
Incyte Corp
|
1,729,102 | $162,743,080 | |
| 8 | BBIO |
BridgeBio Pharma, Inc.
|
1,976,094 | $146,744,740 |
All Filings in PHAT
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $4,544,156 | 409,015 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $6,601,326 | 397,910 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $4,306,690 | 365,904 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $3,453,934 | 360,160 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $2,182,179 | 348,035 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $2,866,668 | 353,038 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $5,294,908 | 292,860 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $2,944,461 | 285,870 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $2,808,926 | 264,494 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $2,396,844 | 262,524 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $2,558,081 | 246,681 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $2,561,418 | 178,870 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $1,225,273 | 171,607 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,943,909 | 173,254 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $1,736,014 | 156,680 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $1,011,230 | 119,814 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $1,717,405 | 126,187 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $2,425,291 | 123,299 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $3,879,959 | 120,871 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $3,626,012 | 107,120 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $3,277,335 | 87,256 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $2,521,331 | 75,898 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $2,779,109 | 75,787 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $2,687,693 | 81,668 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $1,771,329 | 68,603 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||