STATE OF WISCONSIN INVESTMENT BOARD
Position in RYTM — Rhythm Pharmaceuticals, Inc.
CIK 854157
MADISON, WI
Position in RYTM
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$3,573,944
+$393,365 QoQ
Shares Held
32,189
-12.0% QoQ
Ownership
0.047%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#114
of 299 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, 2026STATE OF WISCONSIN INVESTMENT BOARD holds $511,704,326 across 163 Biotechnology names. RYTM ranks #39 (0.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
135,798 | $67,454,940 | |
| 2 | REGN |
Regeneron Pharmaceuticals, Inc.
|
55,287 | $34,473,655 | |
| 3 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
70,171 | $21,123,576 | |
| 4 | RVMD |
Revolution Medicines, Inc.
|
83,892 | $15,711,293 | |
| 5 | XENE |
Xenon Pharmaceuticals Inc.
|
248,821 | $15,018,835 | |
| 6 | MRNA |
Moderna, Inc.
|
207,705 | $14,545,581 | |
| 7 | INSM |
INSMED Inc
|
118,057 | $12,587,237 | |
| 8 | RPRX |
Royalty Pharma plc
|
213,373 | $11,963,824 |
All Filings in RYTM
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $3,573,944 | 32,189 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $3,180,579 | 36,571 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $3,861,896 | 36,079 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $4,117,968 | 40,776 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $2,256,388 | 35,708 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $1,749,334 | 33,025 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $1,806,026 | 32,262 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $1,700,212 | 32,453 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $1,618,872 | 39,427 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $1,443,062 | 33,304 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $1,719,921 | 37,414 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $885,753 | 38,637 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $706,035 | 42,816 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $742,340 | 41,611 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $1,186,872 | 40,758 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $943,372 | 38,505 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $861,959 | 207,701 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $1,127,808 | 97,900 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $483,032 | 48,400 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $632,104 | 48,400 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $947,672 | 48,400 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $1,029,468 | 48,400 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $1,438,932 | 48,400 | Shares | Sole | 2021-02-03 | |
| 2020-09-30 | $1,178,848 | 54,400 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $1,121,690 | 50,300 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $725,994 | 47,700 | Shares | Sole | 2020-05-06 | |
| No filing history on record for this holder in this stock. | ||||||