This cluster is routine and non-informative. The $14M sale by a VP is trivial relative to TSMC's $2.1T market cap and the small purchases by another VP lack conviction. No trading signal. Monitor TSMC's next earnings release for fundamental updates.
Price Chart
Executive Summary
A cluster of insider trades at TSMC shows a VP making small open-market purchases totaling ~$77K while another VP sold $14.0M worth of shares. The sale is material in absolute terms but represents only ~0.0007% of TSMC's $2.1T market cap, making it trivial relative to company size. The purchases are too small to signal conviction, and the sale is likely liquidity-driven given TSMC's massive market cap and the seller's VP role.
Key Financial Metrics
Key Facts
- VP Tien Bor-Zen purchased a total of 1,017 shares for ~$76,698 across three open-market buys on May 19-20, 2026.
- VP Chuang Tzu-Sou sold 200,000 shares for $13.97M in a single open-market sale on May 19, 2026.
- Total cluster value of $14.0M is ~0.0007% of TSMC's $2.1T market cap, well below the 0.1% materiality threshold.
- EVP Mii Yuh-Jier had a non-cash transaction (150,000 shares at $0) on May 22, 2026, which has no economic impact.
- The sale by Chuang Tzu-Sou is large in absolute dollars but routine for a $2.1T company and likely reflects diversification or tax planning, not a bearish signal.
Financial Impact
Total insider sales of $14.0M represent 0.0007% of TSMC's $2.1T market cap, immaterial. Purchases of $77K are negligible.
Risk Factors
- No material insider signal, the cluster does not indicate any change in business outlook.
- The sale could be part of a 10b5-1 plan or routine diversification, not a bearish view.
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-1779445820980 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | SC 13G | $436.20 | awaiting T+20 | awaiting T+20 | $436.87 (+0.15%) |
Oct 22, 2026 5d ago | Institutional Cluster | $418.51 | awaiting T+20 | awaiting T+20 | $436.87 (+4.39%) |
Oct 22, 2026 6d ago | 6-K | $412.35 | awaiting T+20 | awaiting T+20 | $436.87 (+5.95%) |
Oct 15, 2026 12d ago | 6-K | $422.25 | awaiting T+20 | awaiting T+20 | $436.87 (+3.46%) |
Oct 12, 2026 15d ago | Institutional Cluster | $444.35 | awaiting T+20 | awaiting T+20 | $436.87 (−1.68%) |
Oct 8, 2026 20d ago | 6-K | $457.99 | awaiting T+20 | 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 7w 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
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers