The breadth and size of this accumulation cluster suggest strong institutional conviction ahead of potential catalysts (e.g., clinical data readouts). However, 13F filings have a 45-day lag, so the positions may have been partially unwound. Monitor upcoming news flow and insider activity for confirmation. The 70% historical win rate at T+20 on prior TNGX reports supports a positive near-term bias.
Executive Summary
A strong institutional accumulation cluster for Tango Therapeutics (TNGX) emerged in Q2 2026, with 12 buyers adding a net $153.1M in new positions versus only $417K in selling by two small trimmers. Major additions include State Street (+$89.6M), Pictet Asset Management (new $18.3M), and Fisher Asset Management (doubled to $18.1M), signaling broad institutional conviction in the company's pipeline or upcoming catalysts.
Key Financial Metrics
Institutional Positions
Net institutional flow: $152.7M
▲ Buyers (12)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| State Street | ADD | +28.5% | $186.9M | $89.6M |
| Pictet Asset Management Holding | NEW | — | $18.3M | $18.3M |
| Fisher Asset Management | DOUBLED | +256% | $18.1M | $14.7M |
| Assenagon Asset Management | NEW | — | $10.8M | $10.8M |
| Russell Investments Group | DOUBLED | +2093.4% | $8.8M | $8.5M |
▼ Sellers (2)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Massachusetts Financial Services | TRIM | -59.2% | $571.0K | -$222.9K |
| Mitsubishi Ufj Asset Management Co. | TRIM | -62.2% | $447.0K | -$194.5K |
Key Facts
- 12 institutional buyers added a net $153.1M in TNGX during Q2 2026, while only 2 sellers trimmed $417K.
- State Street (mega-passive) increased its stake by 28.5% to $186.9M, adding $89.6M.
- Pictet Asset Management initiated a new $18.3M position.
- Fisher Asset Management doubled its position to $18.1M, adding $14.7M.
- Russell Investments Group increased its stake by 2,093% to $8.8M.
- The cluster is dominated by active asset managers, amplifying the signal beyond passive rebalancing.
Financial Impact
Total institutional buying of $153.1M versus selling of $417K, representing a net inflow of approximately $152.7M into TNGX shares.
Risk Factors
- 13F data is 45+ days old; the cluster may have already been reduced or exited.
- No insider open-market buying corroborates the institutional accumulation (confluence score 22/100, divergent).
- Biotech sector volatility could overshadow the signal if pipeline setbacks occur.
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-TNGX-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 11, 2026 7w ago | 8-K | $25.58 $25.20 | ▲ +1.49% | ▲ +1.04% | — |
Aug 11, 2026 7w ago | 8-K | $26.34 $25.44 | ▼ −3.42% | ▼ −3.01% | — |
Aug 11, 2026 7w ago | Press Release | $26.34 $25.44 | ▼ −3.42% | ▼ −3.01% | — |
Aug 9, 2026 7w ago | Institutional Cluster | $27.67 $25.29 | ▼ −8.60% | ▼ −8.55% | — |
Aug 6, 2026 8w ago | 8-K | $27.07 $25.60 | ▼ −5.43% | ▼ −5.83% | — |
Jun 11, 2026 16w ago | 144 | $30.94 $27.97 | ▼ −9.60% | ▼ −10.27% | — |
Jun 11, 2026 16w ago | Institutional Cluster | $29.82 $32.29 | ▲ +8.28% | ▲ +7.85% | — |
Jun 11, 2026 16w ago | Institutional Cluster | $29.82 $32.29 | ▲ +8.28% | ▲ +7.85% | — |
Jun 10, 2026 16w ago | 424B5 | $29.82 $32.29 | ▲ +8.28% | ▲ +7.85% | — |
Jun 10, 2026 16w ago | 144 | $29.82 $32.29 | ▲ +8.28% | ▲ +7.85% | — |
US Market Status
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