Company · Ownership research

MNTN, Inc. MNTN

CIK 0001891027 · CUSIP 55318A108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 55318A108 (MNTN), not CUSIP 55318A908 (MNTN), CUSIP 55318A958 (MNTN), and does not merge CUSIPs.

This page lists the top 20 of 96 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	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$54.64M 6,209,188 shares	0.01%	+478.46K(+8.30%)Added	SEC filing ↗ May 15, 2026	▾
02	Mercato Management Legacy, LLC CIK 2113675 · View history	$54.28M 6,168,022 shares	100.00%	—	SEC filing ↗ May 13, 2026	▾
03	FMR LLC CIK 315066 · View history	$24.86M 2,824,924 shares	0.00%	+1.96K(+0.10%)Added	SEC filing ↗ May 15, 2026	▾
04	GREYCROFT LP CIK 1910274 · View history	$18.14M 2,061,643 shares	12.40%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
05	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$12.65M 1,437,385 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
06	Qube Research & Technologies Ltd CIK 1729829 · View history	$6.90M 783,760 shares	0.01%	+304.38K(+63.50%)Added	SEC filing ↗ May 15, 2026	▾
07	FEDERATED HERMES, INC. CIK 1056288 · View history	$6.07M 690,000 shares	0.01%	+10.00K(+1.50%)Added	SEC filing ↗ May 11, 2026	▾
08	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$5.69M 646,217 shares	0.01%	+187.03K(+40.70%)Added	SEC filing ↗ May 14, 2026	▾
09	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$5.56M 632,097 shares	0.00%	+239.56K(+61.00%)Added	SEC filing ↗ May 15, 2026	▾
10	CITADEL ADVISORS LLC CIK 1423053 · View history	$5.55M 630,719 shares	0.00%	+78.56K(+14.20%)Added	SEC filing ↗ May 15, 2026	▾
11	AMERICAN FINANCIAL GROUP INC CIK 1042046 · View history	$5.10M 579,683 shares	1.89%	+579.68KNew	SEC filing ↗ May 13, 2026	▾
12	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$4.45M 505,338 shares	0.01%	+460.77K(+1,033.90%)Added	SEC filing ↗ May 15, 2026	▾
13	BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history	$4.26M 484,294 shares	0.00%	+13.60K(+2.90%)Added	SEC filing ↗ May 12, 2026	▾
14	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$4.19M 476,087 shares	0.00%	+476.09KNew	SEC filing ↗ May 15, 2026	▾
15	Mariner, LLC CIK 1373442 · View history	$3.18M 361,290 shares	0.00%	+691(+0.20%)Added	SEC filing ↗ May 13, 2026	▾
16	Proem Advisors LLC CIK 1842526 · View history	$2.86M 325,441 shares	0.95%	+325.44KNew	SEC filing ↗ May 13, 2026	▾
17	Trexquant Investment LP CIK 1633445 · View history	$2.49M 282,469 shares	0.02%	+105.98K(+60.00%)Added	SEC filing ↗ May 15, 2026	▾
18	MARSHALL WACE, LLP CIK 1318757 · View history	$2.47M 281,112 shares	0.00%	+248.03K(+749.60%)Added	SEC filing ↗ May 15, 2026	▾
19	Man Group plc CIK 1637460 · View history	$2.37M 268,814 shares	0.00%	+143.50K(+114.50%)Added	SEC filing ↗ May 15, 2026	▾
20	Militia Capital Management LLC CIK 2130487 · Amended · View history	$2.36M 268,387 shares	0.53%	—	SEC filing ↗ Aug 12, 2026	▾

Showing 20 / 96 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

30,022,511

Not deduplicated across managers

Disclosed value

$264.40M

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.

MNTN, Inc. · Q1 2026

Explore all 96 reporting institutions.

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Sources, coverage & how to read this data

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.