Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MNTN held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 6.2M | $54.6M | +8.3% | 7.870% | 0.01% |
| 2 | Mercato Management Legacy, LLC | 6.2M | $54.3M | β | 7.818% | 100.00% |
| 3 | FMR LLC | 2.8M | $24.9M | +0.1% | 3.580% | 0.00% |
| 4 | Greycroft LP | 2.1M | $18.1M | 0.0% | 2.613% | 12.40% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $12.6M | β | 1.822% | 0.00% |
| 6 | CITADEL ADVISORS LLC | 799K | $7.0M | +3.9% | 1.013% | 0.00% |
| 7 | Qube Research & Technologies Ltd | 784K | $6.9M | +63.5% | 0.993% | 0.01% |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 726K | $6.4M | +185.0% | 0.920% | 0.00% |
| 9 | FEDERATED HERMES, INC. | 690K | $6.1M | +1.5% | 0.874% | 0.01% |
| 10 | RENAISSANCE TECHNOLOGIES LLC | 646K | $5.7M | +40.7% | 0.819% | 0.01% |
| 11 | MILLENNIUM MANAGEMENT LLC | 632K | $5.6M | +61.0% | 0.801% | 0.00% |
| 12 | AMERICAN FINANCIAL GROUP INC | 580K | $5.1M | β | 0.735% | 1.89% |
| 13 | BNP PARIBAS ARBITRAGE, SA | 484K | $4.3M | +2.9% | 0.614% | 0.00% |
| 14 | D. E. Shaw & Co., Inc. | 476K | $4.2M | β | 0.603% | 0.00% |
| 15 | Mariner, LLC | 361K | $3.2M | +0.2% | 0.458% | 0.00% |
| 16 | Proem Advisors LLC | 325K | $2.9M | β | 0.413% | 0.68% |
| 17 | Liontrust Investment Partners LLP | 224K | $2.7M | 0.0% | 0.284% | 0.04% |
| 18 | Trexquant Investment LP | 282K | $2.5M | +60.1% | 0.358% | 0.02% |
| 19 | MARSHALL WACE, LLP | 281K | $2.5M | +749.6% | 0.356% | 0.00% |
| 20 | Man Group plc | 269K | $2.4M | +114.5% | 0.341% | 0.00% |
| 21 | BlackRock, Inc. | 262K | $2.3M | -88.8% | 0.332% | 0.00% |
| 22 | Militia Capital Management LLC | 260K | $2.3M | β | 0.329% | 0.52% |
| 23 | BALYASNY ASSET MANAGEMENT LLC | 210K | $1.9M | β | 0.266% | 0.01% |
| 24 | Point72 Asset Management, L.P. | 206K | $1.8M | +3.2% | 0.261% | 0.00% |
| 25 | MANCHESTER FINANCIAL INC | 200K | $1.8M | 0.0% | 0.254% | 0.34% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MNTN β a direct measure of their conviction.
Filings activity in MNTN during Q1 2026, grouped by how each filer changed its position.
4 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 92 | 3.2% | 38.64% | 21.43 pp | $265M | 36% |
| Q4 2025 | 95 | +27% | 60.07% | +7.28 pp | $411M | +14% |
| Q3 2025 | 75 | +29% | 52.79% | 1.88 pp | $362M | 3.4% |
| Q2 2025 | 58 | β | 54.67% | β | $374M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MNTN stock.
Based on Q1 2026 13F filings, institutional ownership of MNTN Inc. stands at 38.6%, held across 92 reporting institutions.
WELLINGTON MANAGEMENT GROUP LLP is the largest reported institutional holder of MNTN, with approximately 6,209,188 shares worth $0.05B as of Q1 2026.
Yes β 5 widely-followed marquee investors appear among the top 25 institutional holders of MNTN, including CITADEL ADVISORS LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, RENAISSANCE TECHNOLOGIES LLC, MILLENNIUM MANAGEMENT LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for MNTN is 52 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
31 institutions opened new positions in MNTN during Q1 2026, while 34 fully exited. 22 added to existing positions and 37 trimmed.
MNTN institutional ownership fell by 21.43 percentage points quarter-over-quarter, with a net change of -3 holders.
The top 10 institutions account for 74.3% of all reported 13F value in MNTN, and the top 25 account for 91.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
MNTN Inc. (MNTN) Institutional Ownership