The cluster is dominated by one large seller (Principal Financial Group) whose exit may reflect a portfolio rebalance rather than a thesis change. The three buyers are very small in dollar terms. Monitor next 13F for whether the selling continues or reverses, and watch for any insider buying to corroborate institutional conviction.
How the stock moved after the report
NEUTRAL VIEWSTOCK ABOVE ENTRY AT T+1- T+0 · Nov 2 $22.34entry
- T+1 · yesterday +2.01%α +0.36% · $22.79
- T+2 · todayOpen
- T+5 · in 4d Pending
- T+20 · in 26d Pending
- T+60 · in 3mo Pending
How similar events traded
Executive Summary
Institutional 13F filings for MGNI in Q3 2026 show a mixed cluster: three small asset managers added modest positions totaling $343K, while two sellers reduced holdings by $9.1M, led by Principal Financial Group's near-exit of a $9.4M position. The net dollar flow is heavily negative, but the buying is from active managers while the selling is concentrated in one large reduction.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$8.8M
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Farther Finance Advisors | ADD | +72.7% | $13.0K | $8.0K |
| Wealth Enhancement Advisory Services | ADD | +71.3% | $617.0K | $329.0K |
| Assetmark | DOUBLED | +1272.2% | $6.0K | $6.0K |
▼ Sellers (2)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Exchange Traded Concepts | TRIM | -32.8% | $36.0K | -$4.0K |
| Principal Financial Group | NEAR_EXIT | -97.4% | $9.4M | -$9.1M |
Key Facts
- 3 buyers added $343K in aggregate; 2 sellers reduced by $9.1M
- Principal Financial Group exited 97.4% of its position, selling $9.1M worth of shares
- No insider open-market buying corroborates the cluster (confluence score 3/100)
- All participants are asset managers; no activist or hedge fund involvement
- 13F data is as of quarter-end 2026-Q3, reported with a 45-day lag
Financial Impact
Net institutional selling of $8.8M (buyers added $343K, sellers removed $9.1M). The largest single move was Principal Financial Group's $9.1M near-exit.
Risk Factors
- 13F data is stale (45-day lag); positions may have changed since quarter-end
- No insider buying to confirm institutional bullishness
- The buying is from very small positions (<$1M total), limiting signal strength
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-MGNI-2026-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Nov 4, 2026 today | 8-K | $25.87 | awaiting T+20 | awaiting T+20 | No price |
Nov 2, 2026 2d ago | Institutional Cluster | $22.34 | awaiting T+20 | awaiting T+20 | No price |
Oct 7, 2026 28d ago | 8-K | $25.45 | awaiting T+20 | awaiting T+20 | No price |
Sep 21, 2026 6w ago | 8-K | $24.80 $23.81 | ▼ −3.99% | ▼ −3.43% | No price |
Sep 18, 2026 6w ago | Insider Cluster | $25.31 $23.55 | ▲ +6.95% | ▲ +6.05% | No price |
Sep 17, 2026 6w ago | 144 | $25.15 $23.37 | ▼ −7.08% | ▼ −7.28% | No price |
Sep 17, 2026 6w ago | 144 | $25.15 $23.37 | ▼ −7.08% | ▼ −7.28% | No price |
Sep 16, 2026 7w ago | Insider Cluster | $25.63 $24.48 | ▲ +4.49% | ▲ +5.94% | No price |
Sep 11, 2026 7w ago | Insider Cluster | $23.84 $25.08 | ▲ +5.20% | ▲ +2.68% | No price |
Sep 10, 2026 7w ago | Insider Cluster | $23.77 $25.40 | ▲ +6.86% | ▲ +4.74% | No price |
US Market Status
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