Among active 13F managers last quarter, 20 opened and 16 added, while 14 reduced; the largest holder to move was Qube Research & Technologies Ltd (+63%). Over the last 180 days, 1 insider sold and none bought, a net -$4.3M in open-market trades.
The legs disagree, or only one of them leans.
95 tracked 13F filers disclose a position in MNTN as of the latest SEC 13F filings, a combined $222.7M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 4.3M | $39.2M | ▲16× Added · +4.0M sh | Q2 2026 | |
| 2 | FMR LLC | 3.1M | $28.9M | ▲+11% Added · +317K sh | Q2 2026 | |
| 3 | Greycroft LP | 2.1M | $19.0M | —Held | Q2 2026 | |
| 4 | Vanguard Capital Management LLC | 1.9M | $17.7M | ▲+34% Added · +482K sh | Q2 2026 | |
| 5 | Geode Capital Management, LLC | 839K | $7.7M | ▲+479% Added · +694K sh | Q2 2026 | |
| 6 | Qube Research & Technologies Ltd | 784K | $6.9M | ▲+63% Added · +304K sh | Q1 2026 | |
| 7 | Federated Hermes, Inc. | 690K | $6.1M | ▲+1.5% Added · +10K sh | Q1 2026 | |
| 8 | Renaissance Technologies LLC | 646K | $5.7M | ▲+41% Added · +187K sh | Q1 2026 | |
| 9 | Millennium Management LLC | 632K | $5.6M | ▲+61% Added · +240K sh | Q1 2026 | |
| 10 | American Financial Group Inc | 630K | $5.8M | ▲+8.6% Added · +50K sh | Q2 2026 | |
| 11 | Vanguard Portfolio Management LLC | 610K | $5.6M | ▲14× Added · +568K sh | Q2 2026 | |
| 12 | Citadel Advisors LLC | 542K | $5.0M | ▼−14% Reduced · −89K sh | Q2 2026 | |
| 13 | Susquehanna International Group, LLP | 505K | $4.4M | ▲11× Added · +461K sh | Q1 2026 | |
| 14 | BNP Paribas Financial Markets | 484K | $4.3M | ▲+2.9% Added · +14K sh | Q1 2026 | |
| 15 | D. E. Shaw & Co., Inc. | 476K | $4.2M | ▲New +476K sh | Q1 2026 | |
| 16 | State Street Corp | 473K | $4.4M | ▲+876% Added · +425K sh | Q2 2026 | |
| 17 | Mariner, LLC | 361K | $3.2M | ▲+0.2% Added · +691 sh | Q1 2026 | |
| 18 | Militia Capital Management LLC | 350K | $3.2M | ▲+30% Added · +82K sh | Q2 2026 | |
| 19 | Man Group plc | 342K | $3.1M | ▲+27% Added · +73K sh | Q2 2026 | |
| 20 | Proem Advisors LLC | 340K | $3.1M | ▲+4.6% Added · +15K sh | Q2 2026 | |
| 21 | Trexquant Investment LP | 291K | $2.7M | ▲+3.2% Added · +9K sh | Q2 2026 | |
| 22 | Marshall Wace, LLP | 281K | $2.5M | ▲+750% Added · +248K sh | Q1 2026 | |
| 23 | Clark Estates Inc | 248K | $2.3M | ▲New +248K sh | Q2 2026 | |
| 24 | Uniplan Investment Counsel, Inc. | 218K | $2.0M | ▲+36% Added · +58K sh | Q2 2026 | |
| 25 | Balyasny Asset Management L.P. | 210K | $1.9M | ▲New +210K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 20 funds opened a new position in MNTN and 16 added to an existing one, while 14 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Amazon.com IncAMZN | 50 funds | $56.4B |
| Nvidia CorpNVDA | 48 funds | $117.5B |
| Microsoft CorpMSFT | 47 funds | $64.7B |
| Eli Lilly & CoLLY | 46 funds | $25.0B |
| Lam Research CorpLRCX | 45 funds | $19.1B |
| Meta Platforms Inc-Class AMETA | 44 funds | $30.4B |
| Micron Technology IncMU | 44 funds | $26.7B |
| Seagate Technology HoldingsSTX | 44 funds | $5.5B |
| Broadcom IncAVGO | 43 funds | $51.4B |
| Mastercard Inc - AMA | 43 funds | $17.0B |
| Chevron CorpCVX | 43 funds | $8.2B |
| Uber Technologies IncUBER | 43 funds | $2.7B |
Ranked by how many of MNTN's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MNTN.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 18, 2026 | Baroda Ventures LLC | 10% Owner | Sell (S) | 275K | $3.5M |
| Aug 14, 2026 | Baroda Ventures LLC | 10% Owner | Sell (S) | 34K | $422K |
| Aug 13, 2026 | Baroda Ventures LLC | 10% Owner | Sell (S) | 27K | $336K |
| Dec 3, 2025 | Partovi Hadi | Director | Sell (S) | 87K | $1.2M |
| Dec 2, 2025 | Partovi Hadi | Director | Sell (S) | 168K | $2.3M |
| Dec 1, 2025 | Partovi Hadi | Director | Sell (S) | 193K | $2.6M |
| May 23, 2025 | Qualcomm Inc/de | 10% Owner | Sell (S) | 413K | $6.6M |
| May 23, 2025 | Innes Christopher Lee | Chief Operating Officer | Sell (S) | 177K | $2.8M |
| May 23, 2025 | Hot Springs Capital I LLC | Director, 10% Owner | Sell (S) | 900K | $14.4M |
| May 23, 2025 | Pohlen Patrick | Chief Financial Officer | Sell (S) | 255K | $4.1M |
| May 23, 2025 | Partovi Hadi | Director | Sell (S) | 50K | $800K |
| May 23, 2025 | Settle Dana R | Director | Sell (S) | 800K | $12.8M |
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 36 | 23 | – |
Insiders Form 4 open-market | 0 | 1 | -$4.3M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for MNTN
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MNTN/capital-change-brief"
Use Arkolith's capital_change_brief for MNTN. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MNTN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.