Position in RYTM
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$351,837,748
+$54,616,991 QoQ
Shares Held
3,168,853
-7.3% QoQ
Ownership
4.60%
of shares outstanding
% of Portfolio
0.21%
of 13F equity value
Holder Rank
#4
of 302 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in RYTM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026PRIMECAP MANAGEMENT CO/CA/ holds $3,557,107,452 across 15 Biotechnology names. RYTM ranks #3 (9.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ONC |
BeOne Medicines Ltd.
|
5,007,931 | $1,427,110,097 | |
| 2 | BMRN |
Biomarin Pharmaceutical Inc
|
14,190,183 | $811,962,271 | |
| 3 | RYTM |
Rhythm Pharmaceuticals, Inc.
This page
|
3,168,853 | $351,837,748 | |
| 4 | BNTX |
BioNTech SE
|
3,772,031 | $350,987,484 | |
| 5 | XNCR |
Xencor Inc
|
10,181,322 | $163,919,284 | |
| 6 | IMCR |
Immunocore Holdings plc
|
3,638,241 | $115,514,151 | |
| 7 | IMNM |
Immunome Inc.
|
4,581,431 | $97,080,522 | |
| 8 | BBIO |
BridgeBio Pharma, Inc.
|
1,015,980 | $75,670,190 |
All Filings in RYTM
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27 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $351,837,748 | 3,168,853 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $297,220,757 | 3,417,509 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $372,356,729 | 3,478,669 | Shares | Sole | 2026-02-11 | |
| 2025-12-31 | $372,356,729 | 3,478,669 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $430,506,130 | 4,262,859 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $308,243,158 | 4,878,037 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $306,554,446 | 5,787,322 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $367,855,216 | 6,571,190 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $378,093,967 | 7,216,911 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $300,246,774 | 7,312,391 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $335,703,118 | 7,747,591 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $370,180,228 | 8,052,648 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $189,530,626 | 8,267,421 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $136,855,737 | 8,299,317 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $135,714,428 | 7,607,311 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $201,252,455 | 6,911,142 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $172,158,854 | 7,026,892 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $26,410,990 | 6,364,094 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $72,483,736 | 6,291,991 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $62,444,770 | 6,256,991 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $80,725,048 | 6,181,091 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $120,489,269 | 6,153,691 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $127,738,963 | 6,005,593 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $129,102,257 | 4,342,491 | Shares | Sole | 2021-02-08 | |
| 2020-09-30 | $77,463,553 | 3,574,691 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $79,048,839 | 3,544,791 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $53,918,235 | 3,542,591 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||