MNTN · MNTN, Inc. · Shareholders & Ownership

$9.93 -0.54 (-5.16%) At close · Oct 21

Russell 2000 member Rebalance outlook locked

Market Cap

$742.80M

74.80M

Volume · Oct 21 430.11K Avg daily vol (3M) 902.07K

Every disclosed holder of MNTN 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 MNTN

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

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	137	38,905,433	52.01%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	8	37,240,005	49.78%	Yes
Remaining	—	1,342,275	-1.79%	Negative
Registered funds (N-PORT, not summed)	97	9,433,797	12.61%	No

Shares outstanding: 74,803,163, 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.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

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 MNTN

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	Mark Douglas 13G CIK 2059554 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	9,586,506	12.82%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
2	Baroda Ventures LLC Insider CIK 2064393 · Aug 18, 2026 10% Owner, issuer-wide, not summed	6,375,543	8.52%	-275,115	Aug 18, 2026	10% Owner, issuer-wide, not summed
2.1	Baroda Ventures LLC 13G CIK 2064393 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	6,711,098	8.97%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
3	WELLINGTON MANAGEMENT GROUP LLP 13G CIK 902219 · Holding company · Jul 31, 2026 Rule 13d-1(b), qualified institution, not summed	6,307,603	8.43%	+677,117	Jul 31, 2026	Rule 13d-1(b), qualified institution, not summed
3.1	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,630,486	7.53%	-578,702	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Mercato Management Legacy, LLC 13F CIK 2113675 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,168,022	8.25%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
5	MERCATO PARTNERS GROWTH III GP, LLC 13G CIK 2060676 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	6,168,022	8.25%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
5.1	Mercato Partners Growth III GP, LLC Insider CIK 2060676 · May 23, 2025 10% Owner, issuer-wide, not summed	6,168,022	8.25%	-135,193	May 23, 2025	10% Owner, issuer-wide, not summed
6	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	4,259,878	5.69%	+3,998,073	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,190,489	1.59%	—	Jun 30, 2026	iShares Trust, not summed
6.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	440,511	0.59%	—	Jun 30, 2026	iShares Trust, not summed
6.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	157,592	0.21%	—	Jun 30, 2026	iShares Trust, not summed
6.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	87,683	0.12%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
6.5	BlackRock Advantage SMID Cap Fund, Inc. Fund S000002323 · Registered fund · Jun 30, 2026 BlackRock Advantage SMID Cap Fund, Inc., not summed	75,493	0.10%	—	Jun 30, 2026	BlackRock Advantage SMID Cap Fund, Inc., not summed
7	MGD Holdings 13G CIK 2066651 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	4,154,041	5.55%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
7.1	MGD Holdings Insider CIK 2066651 · May 23, 2025 10% Owner, issuer-wide, not summed	281,250	0.38%	—	May 23, 2025	10% Owner, issuer-wide, not summed
8	Greycroft Partners II, L.P. 13G CIK 1484529 · Unknown · Mar 31, 2026 Rule 13d-1(d), exempt investor	3,911,969	5.23%	+1,429,925	Mar 31, 2026	Rule 13d-1(d), exempt investor
9	James Michael Andelman 13G CIK 2069499 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	3,483,927	4.66%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
10	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,142,100	4.20%	+317,176	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	FMR LLC 13G CIK 315066 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	3,142,100	4.20%	+317,176	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
10.2	Fidelity Small Cap Growth Fund Fund S000007193 · Registered fund · Jul 31, 2026 Fidelity Securities Fund, not summed	1,572,116	2.10%	-310,570	Jul 31, 2026	Fidelity Securities Fund, not summed
10.3	Fidelity Small Cap Growth K6 Fund Fund S000057285 · Registered fund · Jul 31, 2026 Fidelity Securities Fund, not summed	816,063	1.09%	-121,710	Jul 31, 2026	Fidelity Securities Fund, not summed
10.4	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	514,611	0.69%	—	Jul 31, 2026	Fidelity Salem Street Trust, not summed
10.5	Strategic Advisers U.S. Total Stock Fund Fund S000084926 · Registered fund · May 31, 2026 Fidelity Rutland Square Trust II, not summed	81,951	0.11%	+80,751	May 31, 2026	Fidelity Rutland Square Trust II, not summed
11	Peak Investment Holdings, LLC 13G CIK 2081787 · Unknown · Jun 30, 2025 Rule 13d-1(d), exempt investor	3,077,442	4.11%	—	Jun 30, 2025	Rule 13d-1(d), exempt investor
12	GREYCROFT LP 13F CIK 1910274 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,061,643	2.76%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
13	SETTLE DANA R Insider CIK 1197109 · May 23, 2025 Director, issuer-wide, not summed	2,061,643	2.76%	—	May 23, 2025	Director, issuer-wide, not summed
14	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,919,227	2.57%	+481,842	Jun 30, 2026	carried, not yet filed for the newest quarter
15	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,656,686	2.21%	+377,300	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
16	Pohlen Patrick Insider CIK 1904412 · May 23, 2025 Chief Financial Officer, issuer-wide, not summed	1,319,489	1.76%	-255,232	May 23, 2025	Chief Financial Officer, issuer-wide, not summed
17	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,157,448	1.55%	+681,361	Jun 30, 2026	carried, not yet filed for the newest quarter
18	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	838,563	1.12%	+693,817	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Innes Christopher Lee Insider CIK 2058705 · May 23, 2025 Chief Operating Officer, issuer-wide, not summed	695,724	0.93%	0	May 23, 2025	Chief Operating Officer, issuer-wide, not summed
20	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	692,998	0.93%	+637,003	Jun 30, 2026	carried, not yet filed for the newest quarter
21	AMERICAN FINANCIAL GROUP INC 13F CIK 1042046 · Insurance company · Jun 30, 2026 carried, not yet filed for the newest quarter	629,683	0.84%	+50,000	Jun 30, 2026	carried, not yet filed for the newest quarter
22	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	609,661	0.82%	+567,503	Jun 30, 2026	carried, not yet filed for the newest quarter
23	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	579,841	0.78%	+95,547	Jun 30, 2026	carried, not yet filed for the newest quarter
24	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	541,761	0.72%	-88,958	Jun 30, 2026	carried, not yet filed for the newest quarter
25	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	480,897	0.64%	+340,089	Jun 30, 2026	carried, not yet filed for the newest quarter
26	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	473,020	0.63%	+424,545	Jun 30, 2026	carried, not yet filed for the newest quarter
26.1	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	1,184	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
26.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	300	0.00%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
27	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	427,867	0.57%	+286,435	Jun 30, 2026	carried, not yet filed for the newest quarter
27.1	Multi-Manager U.S. Small Cap Equity Fund Fund S000051363 · Registered fund · Apr 30, 2026 Goldman Sachs Trust II, not summed	37,619	0.05%	—	Apr 30, 2026	Goldman Sachs Trust II, not summed
27.2	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	24,235	0.03%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
27.3	Goldman Sachs Small Cap Growth Insights Fund Fund S000014930 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	12,908	0.02%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
27.4	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	6,717	0.01%	+1,967	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
28	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	404,893	0.54%	+306,436	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Stanley-Laman Group, Ltd. 13F CIK 1601489 · Unknown · Sep 30, 2026	400,992	0.54%	+400,992	Sep 30, 2026
30	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	396,485	0.53%	+336,137	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Small Cap Growth Stock Portfolio Fund S000000039 · Registered fund · Jun 30, 2026 NORTHWESTERN MUTUAL SERIES FUND INC, not summed	370,144	0.49%	+24,473	Jun 30, 2026	NORTHWESTERN MUTUAL SERIES FUND INC, not summed
32	Jump Financial, LLC 13F CIK 1831577 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	355,597	0.48%	+293,427	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Militia Capital Management LLC 13F CIK 2130487 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	350,000	0.47%	+81,613	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Man Group plc 13F CIK 1637460 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	341,836	0.46%	+73,022	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Proem Advisors LLC 13F CIK 1842526 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	340,441	0.46%	+15,000	Jun 30, 2026	carried, not yet filed for the newest quarter
36	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	320,198	0.43%	+295,231	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	24,419	0.03%	—	Jun 30, 2026	Northern Funds, not summed
37	Trexquant Investment LP 13F CIK 1633445 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	291,432	0.39%	+8,963	Jun 30, 2026	carried, not yet filed for the newest quarter
38	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	290,845	0.39%	+128,469	Jun 30, 2026	carried, not yet filed for the newest quarter
39	HARTFORD SMALL CAP GROWTH HLS FUND Fund S000084804 · Registered fund · Jun 30, 2026 HARTFORD SERIES FUND INC, not summed	266,745	0.36%	+17,854	Jun 30, 2026	HARTFORD SERIES FUND INC, not summed
40	CLARK ESTATES INC/NY 13F CIK 1056466 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	248,000	0.33%	+248,000	Jun 30, 2026	carried, not yet filed for the newest quarter
41	NORGES BANK 13F CIK 1374170 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	233,700	0.31%	—	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Uniplan Investment Counsel, Inc. 13F CIK 1520710 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	218,015	0.29%	+57,564	Jun 30, 2026	carried, not yet filed for the newest quarter
43	VICTORY CAPITAL MANAGEMENT INC 13F CIK 1040188 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	216,900	0.29%	+112,848	Jun 30, 2026	carried, not yet filed for the newest quarter
43.1	VictoryShares Small Cap Free Cash Flow ETF Fund S000080690 · Registered fund · Jun 30, 2026 Victory Portfolios II, not summed	121,344	0.16%	+20,327	Jun 30, 2026	Victory Portfolios II, not summed
43.2	Victory Integrity Discovery Fund Fund S000046401 · Registered fund · Jun 30, 2026 Victory Portfolios, not summed	52,484	0.07%	—	Jun 30, 2026	Victory Portfolios, not summed
43.3	Victory Extended Market Index Fund Fund S000012941 · Registered fund · Jul 31, 2026 Victory Portfolios III, not summed	3,053	0.00%	+18	Jul 31, 2026	Victory Portfolios III, not summed
44	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	214,608	0.29%	+95,901	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
45	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	214,589	0.29%	-431,628	Jun 30, 2026	carried, not yet filed for the newest quarter
46	MANCHESTER FINANCIAL INC 13F CIK 866590 · Registered investment adviser · Sep 30, 2026	200,000	0.27%	0	Sep 30, 2026
47	ZAZOVE ASSOCIATES LLC 13F CIK 1009012 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	0.27%	+49,678	Jun 30, 2026	carried, not yet filed for the newest quarter
48	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	196,783	0.26%	+136,118	Jun 30, 2026	carried, not yet filed for the newest quarter
48.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	113,063	0.15%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
48.2	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	51,196	0.07%	-654	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
48.3	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	6,500	0.01%	0	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
49	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	190,570	0.25%	+102,799	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	181,261	0.24%	+181,261	Jun 30, 2026	carried, not yet filed for the newest quarter
50.1	College Retirement Equities Fund - Total Global Stock Account Fund S000005080 · Registered fund · Jun 30, 2026 College Retirement Equities Fund, not summed	102,750	0.14%	—	Jun 30, 2026	College Retirement Equities Fund, not summed
50.2	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	62,056	0.08%	—	Jul 31, 2026	TIAA-CREF Funds, not summed

14 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 207 holders

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Key facts CIK 1891027 CUSIP 55318A108 13F (30d) 18 filings 18 filers Visit website Investor relations