The dollar value of this cluster is too small to move TSM's stock — ignore for trading purposes. Monitor for any near-term 8-K or earnings pre-announcement; if one appears within 14 days, the cluster would gain signal. In isolation, treat as a routine administrative activity with no trading edge.
Price Chart
Executive Summary
A massive insider buying cluster at TSM saw 20 executives and VPs, including the Chairman/CEO, all purchase shares on the same day (Aug 7) at $73.31, plus one VP bought 1,000 shares on Aug 3. Despite the symbolic strength of a C-suite-led cluster (CEO, Co-COOs, SVPs all buying), the total value of ~$105K represents a trivial ~0.000005% of TSM's $2.18T market cap, rendering the signal economically immaterial. The filings available show no accompanying corporate event — the cluster appears to be a routine, likely 10b5-1 or Taiwan-rule-driven window purchase rather than an informed bet.
Key Financial Metrics
Key Facts
- 20 insiders purchased shares on Aug 7, 2026, at $73.31/share, plus one separate purchase on Aug 3
- Chairman and CEO Wei Che-Chia purchased $11,143 worth of shares
- Total cluster value is approximately $105K — roughly 0.000005% of TSM's $2.18 trillion market cap
- All purchases are open-market (code P) — no tax-withholding or grant transactions
- No recently filed 8-K, earnings release, or other corporate event accompanies this cluster
Financial Impact
~$105K total insider purchases, trivial relative to $2.18T market cap
Risk Factors
- Cluster may be driven by a pre-scheduled 10b5-1 plan or Taiwan-specific insider trading window — not an informational signal
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-TSM-1786362242527 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | SC 13G | $436.20 | awaiting T+20 | — | $436.87 (+0.15%) |
Oct 22, 2026 5d ago | Institutional Cluster | $418.51 | awaiting T+20 | — | $436.87 (+4.39%) |
Oct 22, 2026 5d ago | 6-K | $412.35 | awaiting T+20 | — | $436.87 (+5.95%) |
Oct 15, 2026 12d ago | 6-K | $422.25 | awaiting T+20 | — | $436.87 (+3.46%) |
Oct 12, 2026 15d ago | Institutional Cluster | $444.35 | awaiting T+20 | — | $436.87 (−1.68%) |
Oct 8, 2026 19d ago | 6-K | $457.99 | awaiting T+20 | — | $436.87 (−4.61%) |
Sep 24, 2026 4w ago | 6-K | $451.15 $412.35 | ▼ −8.60% | ▼ −8.18% | $436.87 (−3.17%) |
Sep 10, 2026 6w ago | 6-K | $428.03 $457.99 | ▲ +7.00% | ▲ +4.88% | $436.87 (+2.07%) |
Sep 9, 2026 6w ago | Insider Cluster | $435.36 $472.20 | ▲ +8.46% | ▲ +6.52% | $436.87 (+0.35%) |
Sep 4, 2026 7w ago | Insider Cluster | $428.91 $485.80 | ▲ +13.26% | ▲ +12.66% | $436.87 (+1.86%) |
US Market Status
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