This cluster is routine and non-informative. The sale by VP Chuang is tiny relative to TSM's size and likely reflects personal liquidity or diversification. The VP Tien purchases are too small to signal conviction. No trading action warranted based on this filing alone.
Price Chart
Executive Summary
Two TSM vice presidents traded in opposite directions on May 19, 2026: VP Chuang Tzu-Sou sold 200,000 shares for $13.97M (open-market), while VP Tien Bor-Zen made three small open-market purchases totaling ~$76.7K. The net direction is mixed, with the sell side overwhelmingly dominating by dollar value. However, the $14.0M sale represents only ~0.0007% of TSM's $2.08T market cap, a trivial amount that is routine for a mega-cap insider. The purchases are too small to signal conviction. No material catalyst is identified.
Key Financial Metrics
Key Facts
- VP Chuang Tzu-Sou sold 200,000 shares at $69.83 for $13.97M on May 19, 2026 (open-market sale).
- VP Tien Bor-Zen purchased 1,017 shares across three transactions totaling ~$76.7K on May 19-20, 2026 (open-market buys).
- Total cluster value is $14.04M, but this is only ~0.0007% of TSM's $2.08T market cap.
- Net direction is mixed: one large sell, multiple small buys.
- No 10b5-1 plan or vesting pattern is evident from the data provided.
Financial Impact
Insider sale of $13.97M is negligible relative to $2.08T market cap; purchases of $76.7K are immaterial.
Risk Factors
- Insider sales at a mega-cap like TSM are almost always liquidity-driven and carry no predictive value.
- No evidence of a material catalyst or upcoming event tied to these trades.
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-1779362712893 |
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
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