TSM
Taiwan Semiconductor S.A. CO
Closing price as of Mar 31, 2026
27 superinvestors own TSM
Based on latest 13F filings — data is 45–90 days delayed
| Investor | Weight | Activity |
|---|---|---|
| David Katz | 30.08% | New |
| David Rolfe | 9.03% | Reduced |
| Chase Coleman | 8.23% | Added |
| William Von Mueffling | 5.60% | Reduced |
| Lee Ainslie | 4.82% | Reduced |
| Daniel Loeb | 4.46% | Reduced |
| Viking Global Investors | 4.22% | Reduced |
| Stephen Mandel | 3.74% | Reduced |
| Kenneth Fisher | 2.13% | Added |
| Sarah Ketterer | 2.11% | Reduced |
| Hillman Capital Management | 1.87% | Reduced |
| John Armitage | 1.84% | Reduced |
| First Eagle Investment Management | 1.75% | Reduced |
| Mairs & Power | 1.68% | Held |
| Prem Watsa | 1.63% | Held |
| Torray Funds | 1.34% | Added |
| Wallace Weitz | 0.47% | New |
| Polen Capital Management | 0.41% | Reduced |
| Duan Yongping | 0.26% | Reduced |
| Warren Buffett | 0.21% | Reduced |
| Jensen Investment Management | 0.11% | Reduced |
| Francois Rochon | 0.10% | Reduced |
| Ariel Investments | 0.06% | Added |
| Richard Pzena | 0.02% | Reduced |
| Dodge & Cox | 0.02% | Held |
| Christopher Davis | 0.01% | Held |
| Bill Nygren | 0.00% | Reduced |
Recent insider activity — TSM
Open-market purchases (P) and sales (S) from SEC Form 4 filings · last 12 months
No open-market insider trades in the last 12 months.
Form 4 filings for option exercises and other transaction types are excluded.
Congressional trades — TSM
STOCK Act disclosures · last 12 months
Congressional trade data coming soon.
We are sourcing STOCK Act disclosures and will display them here shortly.
Learn more
What Is SEC Form 4?
Understand the insider trade filings behind TSM activity.
What Is a 13F Filing?
How superinvestors disclose their quarterly holdings.
Insider Cluster Buying
Why multiple insiders buying together is a strong signal.
Superinvestor Consensus
The most widely held stocks across all tracked institutions.