This cluster is routine and immaterial given TSMC's massive market cap. The VP sale likely reflects personal portfolio rebalancing; the small VP purchase is negligible. No significant directional signal. Monitor for any upcoming earnings or guidance changes, but this insider activity alone does not warrant action.
Price Chart
Executive Summary
Two TSMC vice presidents filed Form 4s on the same day: VP Tien Bor-Zen bought $70K worth of shares, while VP Chuang Tzu-Sou sold $14.0M worth. Both transactions occurred on May 19, 2026. The combined $14.0M represents less than 0.001% of TSMC's $2.05T market cap, making this cluster economically trivial despite the large absolute sale amount.
Key Financial Metrics
Key Facts
- VP Tien Bor-Zen purchased 1,000 shares at $69.98 for $69,980 (open-market).
- VP Chuang Tzu-Sou sold 200,000 shares at $69.83 for $13,966,000 (open-market).
- Total insider activity of $14.04M is ~0.0007% of TSMC's $2.05T market cap.
Financial Impact
Negligible relative to TSMC's $2.05T market cap; the $14M total is less than 0.001% of market value.
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-1779186539751 |
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 5d 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 19d 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 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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