MNTN Inc. Class AMNTN

13F holders, Q4 2025 (December 31)
96holders +20
37new positions
17sold out
6famous investors
$13.28avg. 13F price*

At the end of Q4 2025, 96 institutions reported holding MNTN Inc. Class A (MNTN) in their 13F filings, up 20 from Q3 2025. 37 opened new positions and 17 sold out. The largest holders were Mercato Partners Growth III Gp, LLC ($114.4M), Wellington Management Group LLP ($68.4M) and FMR LLC ($33.7M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).

Company
MNTN Inc. Class A
CUSIP
55318A108
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150 Q2 2025: 59Q2 2025Q3 2025: 76Q3 2025Q4 2025: 96Q4 2025Q1 2026: 95Q1 2026Q2 2026: 126Q2 2026

Total Exit/New Position Q3 2025 → Q4 2025

InstitutionsTotal Value
New Positions37$30.0M
Exits17$21.5M

All 13F filers, Q3 2025 → Q4 2025: 7,019,770 shares bought and 2,392,272 shares sold, net +4,627,498 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 96 holders

Mercato Partners Growth III Gp, LLC 100.00% — 6,168,022 $114.4M
Wellington Management Group LLP 0.01% Add +7.2% 5,730,723 $68.4M
FMR LLC 0.00% Reduce -21.8% 2,822,967 $33.7M
BlackRock, Inc. 0.00% Add +40.8% 2,345,378 $28.0M
Greycroft LP 15.60% No change 2,061,643 $24.6M
Bienville Capital Management, LLC 1.74% Add +49.4% 919,052 $11.0M
Federated Hermes, Inc. 0.01% Add +4.6% 680,000 $8.1M
Ameriprise Financial Inc. 0.00% Add +108.2% 675,936 $8.1M
Vanguard Group Inc. 0.00% Reduce -4.0% 596,874 $7.1M
Jane Street Group, LLC 0.01% New 591,868 $7.1M
Citadel Advisors 0.00% Add +130.2% 552,156 $6.6M
Qube Research & Technologies Ltd 0.01% Add +2188.4% 479,382 $5.7M
BNP Paribas Financial Markets 0.00% Add +187.4% 470,699 $5.6M
Renaissance Technologies 0.01% Add +279.5% 459,189 $5.5M
Millennium Management 0.00% Add +57.4% 392,532 $4.7M
Mariner, LLC 0.01% New 360,599 $4.3M
JPMorgan Chase & Co. 0.00% Add +7337.0% 343,513 $4.1M
UBS Group AG 0.00% Add +142.1% 288,267 $3.4M
Bank of Montreal 0.00% Add +14.7% 287,690 $3.4M
Goldman Sachs Group Inc. 0.00% Reduce -21.6% 240,603 $2.9M
Liontrust Investment Partners LLP 0.04% Reduce -32.2% 224,071 $2.7M
Manchester Financial Inc. 0.45% New 200,000 $2.4M
Freestone Grove Partners LP 0.02% Reduce -11.7% 199,621 $2.4M
Point72 Asset Management 0.00% New 199,179 $2.4M
Trexquant Investment LP 0.02% New 176,491 $2.1M
Two Sigma Investments, LP 0.00% New 158,598 $1.9M
S Squared Technology, LLC 0.72% Add +14.8% 155,600 $1.9M
Morgan Stanley 0.00% Reduce -6.0% 140,338 $1.7M
Jump Financial, LLC 0.02% Add +174.1% 134,600 $1.6M
Bank of America Corp. 0.00% Add +1943.1% 127,162 $1.5M
Zazove Associates LLC 2.72% Add +153.2% 126,601 $1.5M
Man Group plc 0.00% Add +741.1% 125,314 $1.5M
Geode Capital Management, LLC 0.00% Add +0.6% 121,844 $1.5M
Walleye Capital LLC 0.01% Add +125.5% 112,739 $1.3M
Burkehill Global Management, LP 0.08% No change 100,000 $1.2M
Ghisallo Capital Management LLC 0.05% No change 100,000 $1.2M
Uniplan Investment Counsel, Inc. 0.12% Add +83.6% 98,577 $1.2M
Raymond James Financial Inc. 0.00% Reduce -33.7% 81,792 $977K
Teachers Retirement System of the State of Kentucky 0.01% Add +17.9% 74,377 $888K
WINTON GROUP Ltd 0.03% New 73,748 $881K
Dark Forest Capital Management LP 0.04% Add +185.1% 71,264 $851K
Tudor Investment Corporation 0.00% Reduce -38.8% 70,131 $837K
Corient Private Wealth LP 0.00% New 70,024 $836K
Victory Capital Management Inc. 0.00% New 64,245 $767K
Two Sigma Advisers, LP 0.00% New 62,502 $746K
Charles Schwab Investment Management Inc. 0.00% Reduce -14.3% 60,213 $719K
Verition Fund Management LLC 0.00% New 51,617 $616K
Seven Grand Managers, LLC 0.05% No change 50,000 $597K
Dakota Wealth Management 0.01% No change 50,000 $597K
State Street Corp. 0.00% Reduce -15.0% 48,475 $579K
Susquehanna International Group, LLP 0.00% New 44,566 $532K
Compound Planning, Inc. 0.01% New 40,000 $478K
OMERS ADMINISTRATION Corp 0.00% New 38,800 $463K
Marshall Wace, LLP 0.00% New 33,086 $395K
HRT Financial LP 0.00% New 33,035 $394K
Quantbot Technologies LP 0.01% Add +248.7% 31,910 $381K
Private Advisory Group LLC 0.03% New 30,965 $370K
XTX Topco Ltd 0.01% New 29,556 $353K
Northern Trust Corp. 0.00% Add +9.6% 28,230 $337K
Engineers Gate Manager LP 0.00% Reduce -54.5% 27,236 $325K
PharVision Advisers, LLC 0.16% New 26,288 $314K
Sandro Wealth Management LLC 0.25% — 25,000 $299K
PDT Partners, LLC 0.02% New 23,727 $283K
J. Goldman & Co LP 0.01% New 21,943 $262K
HSBC Holdings PLC 0.00% New 12,591 $261K
Counterpoint Mutual Funds LLC 0.02% Reduce -21.0% 21,342 $255K
Graham Capital Management, L.P. 0.01% New 21,259 $254K
Cary Street Partners Financial LLC 0.01% Add +29.5% 20,385 $243K
Schonfeld Strategic Advisors LLC 0.00% Reduce -75.6% 20,039 $239K
Tiger Global Management 0.00% No change 20,000 $239K
CIBC Private Wealth Group LLC 0.00% Add +387.1% 19,483 $233K
Citigroup Inc. 0.00% Add +533.3% 18,852 $225K
Centiva Capital, LP 0.01% New 17,994 $215K
Aristides Capital LLC 0.07% New 16,000 $191K
Modus Advisors, LLC 0.05% New 14,745 $176K
Brevan Howard Capital Management LP 0.00% New 14,512 $173K
Jacobs Levy Equity Management, Inc. 0.00% Reduce -32.7% 14,322 $171K
Lighthouse Investment Partners, LLC 0.01% New 13,680 $163K
Hudson Bay Capital Management LP 0.00% New 13,436 $160K
Entropy Technologies, LP 0.01% New 12,800 $153K
Occudo Quantitative Strategies LP 0.01% New 12,741 $152K
Group One Trading LLC 0.00% New 11,447 $137K
Barclays PLC 0.00% Add +2341.4% 9,326 $111K
Los Angeles Capital Management LLC 0.00% New 4,424 $72K
Royal Bank of Canada 0.00% Add +2093.6% 5,857 $70K
US Bancorp \de 0.00% Add +143.5% 5,481 $65K
Acadian Asset Management LLC 0.00% Add +98.8% 4,711 $55K
Aster Capital Management (DIFC) Ltd 0.02% New 3,587 $43K
State of Wyoming 0.00% New 2,025 $24K
Quarry LP 0.00% Add +3243.4% 1,772 $21K
Osaic Holdings, Inc. 0.00% Reduce -32.8% 1,135 $14K
Jones Financial Companies LLLP 0.00% Add +11.7% 1,061 $13K
Western Pacific Wealth Management, LP 0.01% No change 1,000 $12K
Rockefeller Capital Management L.P. 0.00% New 500 $6K
Clearstead Advisors, LLC 0.00% No change 80 $956
Caitong International Asset Management Co., Ltd 0.00% New 19 $227

"% of holder's portfolio" is MNTN's weight in each manager's 13F, not the share of MNTN Inc. Class A the manager owns.