HMH · HMH Holding Inc · Shareholders & Ownership

$17.63 +0.25 (+1.44%)

Russell 2000 member Rebalance outlook locked

Market Cap

$763.58M

43.93M

Volume · Oct 20 71.55K Avg daily vol (3M) 202.87K

Every disclosed holder of HMH in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns HMH

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	74	12,184,977	27.73%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	1	609,527	1.39%	Yes
Remaining	—	31,139,773	70.88%	Rest
Registered funds (N-PORT, not summed)	88	5,235,677	11.92%	No

Shares outstanding: 43,934,277, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of HMH

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Akastor ASA Insider CIK 2037057 · Apr 30, 2026 10% Owner, issuer-wide, not summed	32,063,113	72.98%	+7,629,991	Apr 30, 2026	10% Owner, issuer-wide, not summed
2	Baker Hughes Co Insider CIK 1701605 · Apr 30, 2026 Director, 10% Owner, issuer-wide, not summed	15,945,826	36.29%	-342,922	Apr 30, 2026	Director, 10% Owner, issuer-wide, not summed
3	PRICE T ROWE ASSOCIATES INC /MD/ 13G CIK 80255 · Registered investment adviser · Jul 31, 2026 Rule 13d-1(b), qualified institution, not summed	2,788,468	6.35%	—	Jul 31, 2026	Rule 13d-1(b), qualified institution, not summed
3.1	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,806,339	6.39%	+2,806,339	Jun 30, 2026	carried, not yet filed for the newest quarter
3.2	T. Rowe Price All-Cap Opportunities Fund Fund S000002104 · Registered fund · Jun 30, 2026 T. Rowe Price All-Cap Opportunities Fund, Inc., not summed	576,016	1.31%	—	Jun 30, 2026	T. Rowe Price All-Cap Opportunities Fund, Inc., not summed
3.3	T. Rowe Price New Horizons Fund, Inc. Fund S000002106 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW HORIZONS FUND, INC., not summed	485,376	1.10%	—	Jun 30, 2026	T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
3.4	T. Rowe Price Small-Cap Value Fund, Inc. Fund S000002121 · Registered fund · Jun 30, 2026 T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed	333,279	0.76%	—	Jun 30, 2026	T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed
3.5	T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund Fund S000002074 · Registered fund · Jun 30, 2026 T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed	322,596	0.73%	—	Jun 30, 2026	T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
4	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,496,751	3.41%	+1,496,751	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	Small Cap Value Fund Fund S000005781 · Registered fund · Jun 30, 2026 American Century Capital Portfolios, Inc., not summed	785,000	1.79%	—	Jun 30, 2026	American Century Capital Portfolios, Inc., not summed
4.2	Small Cap Dividend Fund Fund S000075489 · Registered fund · Jun 30, 2026 American Century Capital Portfolios, Inc., not summed	38,982	0.09%	—	Jun 30, 2026	American Century Capital Portfolios, Inc., not summed
5	FMR LLC 13G CIK 315066 · Holding company · Jul 31, 2026 Rule 13d-1(b), qualified institution, not summed	1,320,053	3.00%	—	Jul 31, 2026	Rule 13d-1(b), qualified institution, not summed
5.1	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	563,624	1.28%	+563,624	Jun 30, 2026	carried, not yet filed for the newest quarter
5.2	Fidelity Series Small Cap Core Fund Fund S000077859 · Registered fund · Jul 31, 2026 Fidelity Concord Street Trust, not summed	274,400	0.62%	—	Jul 31, 2026	Fidelity Concord Street Trust, not summed
5.3	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	111,495	0.25%	—	Jul 31, 2026	Fidelity Salem Street Trust, not summed
5.4	Fidelity Small Cap Value Index Fund Fund S000065751 · Registered fund · Jun 30, 2026 Fidelity Salem Street Trust, not summed	14,249	0.03%	—	Jun 30, 2026	Fidelity Salem Street Trust, not summed
5.5	Fidelity Nasdaq Composite Index Fund Fund S000055366 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	5,364	0.01%	—	May 31, 2026	Fidelity Concord Street Trust, not summed
6	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	760,497	1.73%	+760,497	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	WELLINGTON MANAGEMENT GROUP LLP 13G CIK 902219 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	760,497	1.73%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
7	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	738,234	1.68%	+738,234	Jun 30, 2026	carried, not yet filed for the newest quarter
7.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	738,234	1.68%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
7.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	254,601	0.58%	—	Jun 30, 2026	iShares Trust, not summed
7.3	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	92,881	0.21%	—	Jun 30, 2026	iShares Trust, not summed
7.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	34,610	0.08%	—	Jun 30, 2026	iShares Trust, not summed
7.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	19,203	0.04%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
8	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	694,396	1.58%	+694,396	Jun 30, 2026	carried, not yet filed for the newest quarter
9	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	673,656	1.53%	+673,656	Jun 30, 2026	carried, not yet filed for the newest quarter
10	SCHRODER INVESTMENT MANAGEMENT GROUP 13G CIK 1086619 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution	609,527	1.39%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution
11	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	473,904	1.08%	+473,904	Jun 30, 2026	carried, not yet filed for the newest quarter
12	GeoSphere Capital Management, LLC 13F CIK 1426876 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	375,000	0.85%	+375,000	Jun 30, 2026	carried, not yet filed for the newest quarter
13	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	335,547	0.76%	—	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
14	Alyeska Investment Group, L.P. 13F CIK 1453072 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	300,000	0.68%	+300,000	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Cannell & Spears LLC 13F CIK 1426319 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	277,199	0.63%	+277,199	Jun 30, 2026	carried, not yet filed for the newest quarter
16	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	273,097	0.62%	+273,097	Jun 30, 2026	carried, not yet filed for the newest quarter
17	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	266,912	0.61%	+266,912	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Bridge Builder Small/Mid Cap Value Fund Fund S000048337 · Registered fund · Jun 30, 2026 Bridge Builder Trust, not summed	191,351	0.44%	—	Jun 30, 2026	Bridge Builder Trust, not summed
19	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	160,894	0.37%	+160,894	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	MILLENNIUM MANAGEMENT LLC 13G CIK 1273087 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(c), passive investor, not summed	160,894	0.37%	-455,159	Jun 30, 2026	Rule 13d-1(c), passive investor, not summed
20	Thomist Capital Management, LP 13F CIK 1767809 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	158,161	0.36%	+158,161	Jun 30, 2026	carried, not yet filed for the newest quarter
21	McGee Thomas W. Insider CIK 2035200 · Sep 3, 2026 Chief Financial Officer, issuer-wide, not summed	154,995	0.35%	+6,627	Sep 3, 2026	Chief Financial Officer, issuer-wide, not summed
22	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	150,759	0.34%	+150,759	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	259	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
23	SEVEN GRAND MANAGERS, LLC 13F CIK 1909126 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	150,000	0.34%	+150,000	Jun 30, 2026	carried, not yet filed for the newest quarter
24	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	144,960	0.33%	+144,960	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Bergsvik Eirik Insider CIK 2035158 · Sep 3, 2026 Chief Executive Officer, issuer-wide, not summed	144,234	0.33%	+9,196	Sep 3, 2026	Chief Executive Officer, issuer-wide, not summed
26	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	136,095	0.31%	+136,095	Jun 30, 2026	carried, not yet filed for the newest quarter
27	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	132,308	0.30%	—	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
28	Marex Group plc 13F CIK 1997464 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	127,392	0.29%	+127,392	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Burkehill Global Management, LP 13F CIK 1904549 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	125,000	0.28%	+125,000	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Ghisallo Capital Management LLC 13F CIK 1825214 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	125,000	0.28%	+125,000	Jun 30, 2026	carried, not yet filed for the newest quarter
31	RETTIG DWIGHT W Insider CIK 1228420 · Sep 3, 2026 Chf Admn Officer, GC, Corp Sec, issuer-wide, not summed	104,995	0.24%	+6,627	Sep 3, 2026	Chf Admn Officer, GC, Corp Sec, issuer-wide, not summed
32	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	101,722	0.23%	+101,722	Jun 30, 2026	carried, not yet filed for the newest quarter
33	CHAUVIERE E CHARLS Insider CIK 1240953 · Sep 3, 2026 Chief Operations Officer, issuer-wide, not summed	92,294	0.21%	+6,627	Sep 3, 2026	Chief Operations Officer, issuer-wide, not summed
34	Walleye Capital LLC 13F CIK 1758720 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	82,951	0.19%	+82,951	Jun 30, 2026	carried, not yet filed for the newest quarter
35	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	82,004	0.19%	+82,004	Jun 30, 2026	carried, not yet filed for the newest quarter
35.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	5,352	0.01%	—	Jun 30, 2026	Northern Funds, not summed
36	READYSTATE ASSET MANAGEMENT LP 13F CIK 1900923 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	80,000	0.18%	+80,000	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Hartford Schroders US Small Cap Opportunities Fund Fund S000054859 · Registered fund · Jul 31, 2026 HARTFORD MUTUAL FUNDS II, INC, not summed	79,558	0.18%	-1,712	Jul 31, 2026	HARTFORD MUTUAL FUNDS II, INC, not summed
38	Dyrseth Roy A. Insider CIK 2035162 · Sep 3, 2026 Chief Commercial Officer, issuer-wide, not summed	74,390	0.17%	+5,747	Sep 3, 2026	Chief Commercial Officer, issuer-wide, not summed
39	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	73,976	0.17%	+73,976	Jun 30, 2026	carried, not yet filed for the newest quarter
40	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	68,856	0.16%	+68,856	Jun 30, 2026	carried, not yet filed for the newest quarter
41	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	64,592	0.15%	+64,592	Jun 30, 2026	carried, not yet filed for the newest quarter
42	HARTFORD SMALL CAP VALUE FUND Fund S000003592 · Registered fund · Jul 31, 2026 HARTFORD MUTUAL FUNDS, INC, not summed	62,099	0.14%	—	Jul 31, 2026	HARTFORD MUTUAL FUNDS, INC, not summed
43	Skogerbo Pal Insider CIK 2035218 · Sep 3, 2026 Chief Technology Officer, issuer-wide, not summed	62,031	0.14%	+5,747	Sep 3, 2026	Chief Technology Officer, issuer-wide, not summed
44	LMR Partners LLP 13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	60,200	0.14%	+60,200	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	57,432	0.13%	+57,432	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Small Cap Value Portfolio Fund S000000049 · Registered fund · Jun 30, 2026 NORTHWESTERN MUTUAL SERIES FUND INC, not summed	54,262	0.12%	—	Jun 30, 2026	NORTHWESTERN MUTUAL SERIES FUND INC, not summed
47	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	51,003	0.12%	+51,003	Jun 30, 2026	carried, not yet filed for the newest quarter
47.1	College Retirement Equities Fund - Total Global Stock Account Fund S000005080 · Registered fund · Jun 30, 2026 College Retirement Equities Fund, not summed	25,040	0.06%	—	Jun 30, 2026	College Retirement Equities Fund, not summed
47.2	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	13,953	0.03%	—	Jul 31, 2026	TIAA-CREF Funds, not summed
48	VANGUARD EXPLORER VALUE FUND Fund S000028087 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	49,391	0.11%	—	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
49	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	45,687	0.10%	+45,687	Jun 30, 2026	carried, not yet filed for the newest quarter
50	T.Rowe Price Small Cap Growth Portfolio Fund S000006529 · Registered fund · Jun 30, 2026 Brighthouse Funds Trust II, not summed	41,538	0.09%	—	Jun 30, 2026	Brighthouse Funds Trust II, not summed

9 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 143 holders

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Key facts CIK 2021880 CUSIP 40445M100 13F (30d) 6 filings 6 filers Visit website Investor relations