Company · Ownership research

NorthWestern Energy Group, Inc. NWE

CIK 0001993004 · CUSIP 668074305

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 668074305 (NWE), not CUSIP 668074905 (NWE), and does not merge CUSIPs.

This page lists the top 20 of 358 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$555.92M 8,613,648 shares	0.01%	+186.40K(+2.20%)Added	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$430.31M 6,667,340 shares	0.01%	-28.32K(-0.40%)Reduced	SEC filing ↗ Jan 29, 2026	▾
03	STATE STREET CORP CIK 93751 · View history	$170.24M 2,637,718 shares	0.01%	+14.75K(+0.60%)Added	SEC filing ↗ Feb 13, 2026	▾
04	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$131.64M 2,039,629 shares	0.07%	-929.19K(-31.30%)Reduced	SEC filing ↗ Feb 13, 2026	▾
05	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$105.14M 1,628,750 shares	0.01%	+2.99K(+0.20%)Added	SEC filing ↗ Feb 9, 2026	▾
06	FRANKLIN RESOURCES INC CIK 38777 · View history	$92.73M 1,436,750 shares	0.02%	+98.47K(+7.40%)Added	SEC filing ↗ Feb 11, 2026	▾
07	River Road Asset Management, LLC CIK 1341401 · View history	$81.58M 1,263,967 shares	0.89%	-1.03M(-44.80%)Reduced	SEC filing ↗ Feb 24, 2026	▾
08	NEUBERGER BERMAN GROUP LLC CIK 1465109 · View history	$81.32M 1,259,921 shares	0.06%	-8.52K(-0.70%)Reduced	SEC filing ↗ Feb 13, 2026	▾
09	SYSTEMATIC FINANCIAL MANAGEMENT LP CIK 1085936 · View history	$74.85M 1,159,753 shares	1.76%	-17.23K(-1.50%)Reduced	SEC filing ↗ Feb 9, 2026	▾
10	FMR LLC CIK 315066 · View history	$72.60M 1,124,935 shares	0.00%	+1.75K(+0.20%)Added	SEC filing ↗ Feb 17, 2026	▾
11	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$66.17M 1,025,302 shares	0.10%	—	SEC filing ↗ Feb 17, 2026	▾
12	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$65.66M 1,017,415 shares	0.01%	+7.06K(+0.70%)Added	SEC filing ↗ Feb 12, 2026	▾
13	Balyasny Asset Management L.P. CIK 1218710 · View history	$64.92M 1,005,886 shares	0.12%	+988.98K(+5,851.30%)Added	SEC filing ↗ Feb 17, 2026	▾
14	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$59.41M 920,554 shares	0.04%	+850.52K(+1,214.40%)Added	SEC filing ↗ Feb 17, 2026	▾
15	MORGAN STANLEY CIK 895421 · Amended · View history	$54.61M 846,080 shares	0.00%	+57.12K(+7.20%)Added	SEC filing ↗ May 27, 2026	▾
16	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$52.44M 812,500 shares	0.08%	+812.50KNew	SEC filing ↗ Feb 17, 2026	▾
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$52.09M 807,138 shares	0.01%	-31.65K(-3.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
18	WESTWOOD HOLDINGS GROUP INC CIK 1165002 · View history	$50.81M 787,257 shares	0.41%	-193.99K(-19.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
19	NORGES BANK CIK 1374170 · View history	$50.27M 778,958 shares	0.01%	+778.96KNew	SEC filing ↗ Feb 10, 2026	▾
20	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$50.09M 776,126 shares	0.02%	+574.36K(+284.70%)Added	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 358 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

358

Cancelled or null records excluded

Disclosed shares

59,787,091

Not deduplicated across managers

Disclosed value

$3.86B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

NorthWestern Energy Group, Inc. · Q4 2025

Explore all 358 reporting institutions.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.