The cluster is directionally ambiguous — Wellington's $29.5M add is offset by Ameriprise's $13.4M exit and morgan Stanley/Citadel/UBS trims totaling $5.6M. Look for a company-specific catalyst (earnings pre-announcement or sector event) to explain the divergence.
Executive Summary
A mixed institutional cluster emerged in MNTN during 2025-Q3: five buyers added $40.0M (total current holdings $113.4M), while four sellers trimmed $19.1M. Wellington Management led the buying, more than doubling its position to $99.2M (+$29.5M). The selling was concentrated in Ameriprise Financial, which trimmed 63.5% of its stake, accounting for the bulk of the sell-side dollar activity. The cluster is dominated by active managers on the buy side but includes passive trims on the sell side, suggesting a sector-specific or fundamental thesis rather than a risk-off signal.
Key Financial Metrics
Institutional Positions
Net institutional flow: $20.9M
▲ Buyers (5)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Wellington Management Group | ADD | +67.8% | $99.2M | $29.5M |
| Vanguard | DOUBLED | +787.7% | $11.5M | $10.0M |
| Soros | ADD | +28.6% | $2.4M | $198.0K |
| Legal & General Group | DOUBLED | +2787.1% | $248.0K | $238.0K |
| BofA | DOUBLED | +622300% | $115.0K | $115.0K |
▼ Sellers (4)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Ameriprise Financial | TRIM | -63.5% | $19.5M | -$13.4M |
| Citadel | TRIM | -25.1% | $7.0M | -$2.6M |
| Morgan Stanley | TRIM | -25.3% | $4.4M | -$1.6M |
| UBS | TRIM | -29.5% | $3.7M | -$1.5M |
Key Facts
- 5 buyers added $40.0M in new holdings; 4 sellers reduced by $19.1M
- Wellington Management added $29.5M, now holds $99.2M (67.8% increase)
- Ameriprise Financial was the largest seller, trimming $13.4M (63.5% reduction)
- Cluster includes 2 active asset managers buying, 2 passive/quant funds trimming
Financial Impact
5 buyers accumulated $40.0M in net new positions; 4 sellers reduced holdings by $19.1M. Net institutional inflow of $20.9M.
Risk Factors
- 13F data reflects quarter-end snapshot; positions may have been partially unwound in Q4
- Mixed net direction limits actionable conviction; net inflow of $20.9M is modest relative to market cap
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-MNTN-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 4, 2026 11w ago | 8-K | $10.43 $13.13 | ▲ +25.89% | ▲ +26.49% | — |
Jun 11, 2026 19w ago | Institutional Cluster | $8.53 $10.80 | ▲ +26.61% | ▲ +24.72% | — |
US Market Status
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