$CMS

$69.59 +$0.01 (0.01%) Close

$CMS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 313.6M shares outstanding

Who owns CMS?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 48.1%

BlackRock, Inc. 10.6% · Vanguard Capital Management LLC 6.4%

Institutional ownership

100.0%

+5.1 pts vs last qtr

Institutional holders

819

+16 vs last qtr

Net shares bought

+17.7M

by institutions in Q2 2026

New / sold out

106 / 90

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Wellington Management Group LLP +5.5M
Capital International Investors NEW +5.3M

Biggest sellers in Q2 2026

Price T Rowe Associates Inc /MD/ −907.8K
Lord, Abbett & Co. LLC −873.9K

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.09M

5 notices from 3 people

Shares covered

27.7K

0.01% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

John G Russell Director $1.13M
Hofmeister Brandon J. Officer $826K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+7.9%

+0.85% a year

Each share's claim on the business

−7.3%

shrank without buying or selling a share

Diluted shares, split-adjusted

How patient are the owners?

Institutional shares by how long they've been held

5+ years80% 3–5 years2% 1–3 years10% Under 1 year7%

Quarterly turnover

8.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting CMS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	33.1M	10.55%	−494.7K (−1.5%)	≤2021	0.0%
Shares held by quarter Peak holding33.6M (Q1'26) Change over 8 quarters+2.4M Share of the company10.550% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	20.2M	6.43%	+289.7K (+1.5%)	≤2021	0.0%
Shares held by quarter Peak holding20.2M (Q2'26) Change over 8 quarters+20.2M Share of the company6.430% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

33.1M

% of company

10.55%

Change vs last qtr

−494.7K (−1.5%)

Held since

≤2021

Vanguard Capital Management LLC

20.2M

% of company

6.43%

Change vs last qtr

+289.7K (+1.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding CMS Energy Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CMS on Form N-PORT; together they hold 47.9% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$750M	9.8M	3.13%	0.03%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$612M	8.0M	2.55%	0.04%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$750M

% of company

3.13%

% of the fund

0.03%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$612M

% of company

2.55%

% of the fund

0.04%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding CMS Energy Corporation and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
RG Rochow Garrick J Insider	637.9K	0.20%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.200% Rochow Garrick J's insider activity →
HR Hayes Rejji P Insider	268.5K	0.09%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.090% Hayes Rejji P's insider activity →

Rochow Garrick J

Insider

637.9K

% of company

0.20%

Change vs last qtr

—

Held since

—

Hayes Rejji P

Insider

268.5K

% of company

0.09%

Change vs last qtr

—

Held since

—

20 more holders behind a free account

See every insider and 5%+ holder of CMS Energy Corporation.

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