The cluster is dominated by passive rebalancing; active manager interest is absent. Monitor for 13F filings from active funds or insiders to gauge genuine conviction. The 45-day reporting lag means these positions are already stale.
Executive Summary
Four institutions increased their MGNX positions in Q3 2025 while one reduced, resulting in net buying of approximately $2M. However, the buying is dominated by passive managers (Morgan Stanley, Wells Fargo, Invesco) and quant fund RenTech, suggesting index rebalancing or quantitative signals rather than fundamental conviction. The sole seller, Schwab, nearly exited its position. Given the small absolute dollar amounts and passive nature, the signal is weak.
Key Financial Metrics
Institutional Positions
Net institutional flow: $2.0M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Morgan Stanley | DOUBLED | +121.7% | $1.7M | $1.1M |
| RenTech | ADD | +28.2% | $2.9M | $1.3M |
▼ Sellers (1)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Schwab | NEAR_EXIT | -91% | $405.0K | -$354.1K |
Key Facts
- Morgan Stanley doubled its MGNX holdings (446K → 989K shares, value $540K → $1.7M).
- RenTech added 28.2% (1.33M → 1.70M shares, value $1.6M → $2.9M).
- Schwab reduced its stake by 91% (334K → 30K shares, value $405K → $50K).
- Net institutional buying of ~$2.0M, but mostly from passive index funds.
- MGNX market cap is $246M; the cluster represents a tiny fraction of outstanding shares.
Financial Impact
4 buyers accumulated $2.4M in new positions while 1 seller reduced holdings by $354K, net +$2.0M.
Risk Factors
- Passive buying may be reversed in subsequent quarters with no fundamental catalyst.
- Small dollar amounts relative to market cap limit price impact.
- Historical win rate on MGNX reports is 40% at T+20, suggesting unreliable signal.
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-MGNX-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Jul 8, 2026 12w ago | 8-K | $4.57 $4.01 | ▼ −12.25% | ▼ −14.50% | — |
Jul 2, 2026 13w ago | Press Release | $4.71 $3.78 | ▼ −19.75% | ▼ −19.33% | — |
Jun 12, 2026 16w ago | Institutional Cluster | $3.96 $4.33 | ▲ +9.34% | ▲ +7.56% | — |
Jun 11, 2026 16w ago | Institutional Cluster | $4.01 $4.57 | ▲ +13.97% | ▲ +12.07% | — |
May 13, 2026 20w ago | 8-K | $4.16 $3.96 | ▼ −4.81% | ▼ −3.95% | — |
May 12, 2026 20w ago | 8-K | $3.52 $3.87 | ▲ +9.94% | ▲ +11.67% | — |
May 11, 2026 20w ago | Press Release | $3.52 $3.87 | ▲ +9.94% | ▲ +11.67% | — |
Apr 8, 2026 25w ago | 8-K | $3.44 $3.01 | ▼ −12.50% | ▼ −20.07% | — |
Apr 8, 2026 25w ago | Press Release | $3.44 $3.01 | ▼ −12.50% | ▼ −20.07% | — |
Apr 8, 2026 25w ago | DEFA14A | $3.44 $3.01 | ▼ −12.50% | ▼ −20.07% | — |
US Market Status
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