WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in NWE — NorthWestern Energy Group, Inc.
CIK 1644956
CHICAGO, IL
Position in NWE
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$28,122,091
+$1,445,902 QoQ
Shares Held
426,480
+3.2% QoQ
Ownership
0.693%
of shares outstanding
% of Portfolio
0.09%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2021
20 quarters on record
Voting authority
Sole 69.29562933783531.ToString("F0")%
Shared 0.ToString("F0")%
None 30.7043706621647.ToString("F0")%
Common Shares in NWE Over Time
Shares Held
Position Value (USD)
Position in Utilities - Regulated Electric
Utilities · as of Mar 31, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $60,667,445 across 4 Utilities - Regulated Electric names. NWE ranks #2 (46.4% of the industry book) .
All Filings in NWE
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $28,122,091 | 426,480 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $26,676,189 | 413,328 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $26,739,054 | 456,220 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $24,822,736 | 483,874 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $30,339,967 | 524,278 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $29,512,699 | 552,052 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $30,824,414 | 538,700 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $27,796,453 | 555,041 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $28,320,797 | 556,073 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $28,312,549 | 556,348 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $27,251,557 | 567,032 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $34,542,887 | 608,578 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $34,557,868 | 597,267 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $35,312,284 | 595,084 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $30,455,532 | 618,010 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $37,154,304 | 630,482 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $35,485,067 | 586,627 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $33,958,756 | 594,100 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $36,754,683 | 641,443 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $79,189 | 1,315 | Shares | Sole | 2021-08-12 | |
| No filing history on record for this holder in this stock. | ||||||