CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in RYTM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$45,786,139
-$11,206,987 QoQ
Shares Held
526,459
-1.1% QoQ
Ownership
0.768%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 99.99981005168493.ToString("F0")%
Shared 0.ToString("F0")%
None 0.00018994831506347122.ToString("F0")%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $6,184,692,793 across 287 Biotechnology names. RYTM ranks #29 (0.7% 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 RYTM
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $45,786,139 | 526,459 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $56,993,126 | 532,447 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $53,314,842 | 527,922 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $29,158,267 | 461,438 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $23,594,374 | 445,429 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $24,645,195 | 440,250 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $22,730,239 | 433,866 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $17,571,955 | 427,958 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $17,624,260 | 406,745 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $18,281,579 | 397,685 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $8,820,347 | 384,748 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $5,780,717 | 350,559 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $4,068,180 | 228,037 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $6,695,153 | 229,916 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $5,004,590 | 204,269 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $716,829 | 172,730 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $3,436,704 | 298,325 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $2,885,277 | 289,106 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $3,478,687 | 266,362 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $5,240,214 | 267,631 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $5,364,761 | 252,222 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $6,209,794 | 208,873 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $4,458,407 | 205,741 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $4,685,765 | 210,124 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $2,852,547 | 187,421 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||