TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) — real insider trading activity disclosed to the SEC, tracked automatically as new Form 4 filings are reported. Most recent: Tien Bor-Zen — 5 open-market purchases between 2026-07-20 and 2026-07-21, totaling $301,350.
Transactions disclosed by company insiders to the SEC on Form 4, most recent first.
| Insider | Role | Date | Shares | Value |
|---|---|---|---|---|
| Wang Ying-Lang | SVP | 2026-09-01 | 12,881 | $0 |
| Wei Che-Chia | Chairman and CEO | 2026-09-01 | 204,375 | $0 |
| Zhang Kevin Xiaoqiang | SVP and Deputy Co-COO | 2026-09-01 | 20,313 | $0 |
| Jang Syun-Ming | VP | 2026-09-01 | 8,175 | $0 |
| Wu Shien-Yang | SVP | 2026-09-01 | 12,881 | $0 |
| Yoo Chue-San | VP | 2026-09-01 | 8,175 | $0 |
| Yeap Choh Fei | SVP | 2026-09-01 | 12,881 | $0 |
| Cao Min | VP | 2026-09-01 | 12,881 | $0 |
| Chang Tzonz-Sheng | SVP | 2026-09-01 | 12,881 | $0 |
| Chin Yung-Pei | EVP and Co-COO | 2026-09-01 | 32,204 | $0 |
Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.
| Fund | Change | Quarter |
|---|---|---|
| PBCay One RSC Ltd | PBCay One RSC Ltd increased this position by 75% ($81,287,789 -> $142,617,684). | 2026-06-30 |
| Spear Holdings RSC Ltd | Spear Holdings RSC Ltd increased this position by 76% ($81,288,803 -> $142,677,858). | 2026-06-30 |
| Raiffeisen Bank International AG | Raiffeisen Bank International AG increased this position by 135051% ($94,313 -> $127,465,320). | 2026-06-30 |
| DANSKE BANK A/S | DANSKE BANK A/S increased this position by 40% ($101,242,047 -> $141,669,708). | 2026-06-30 |
| TRIGLAV INVESTMENTS, D.O.O. | TRIGLAV INVESTMENTS, D.O.O. increased this position by 291% ($10,493,254 -> $41,012,573). | 2026-06-30 |
| CAUSEWAY CAPITAL MANAGEMENT LLC | CAUSEWAY CAPITAL MANAGEMENT LLC increased this position by 48% ($171,837,774 -> $254,092,074). | 2026-06-30 |
| BNP PARIBAS FINANCIAL MARKETS | BNP PARIBAS FINANCIAL MARKETS increased this position by 126% ($524,000,262 -> $1,181,725,952). | 2026-06-30 |
| Clearbridge Investments, LLC | Clearbridge Investments, LLC increased this position by 476% ($313,500,632 -> $1,804,843,058). | 2026-06-30 |
Largest reported positions as of 2026-06-30.
| Fund | Value | Shares |
|---|---|---|
| Clearbridge Investments, LLC | $1,804,843,058 | 3,779,222 |
| BNP PARIBAS FINANCIAL MARKETS | $1,181,725,952 | 2,474,456 |
| Dodge & Cox | $688,067,096 | 1,440,767 |
| CAUSEWAY CAPITAL MANAGEMENT LLC | $254,092,074 | 532,052 |
| ARK Investment Management LLC | $230,325,325 | 482,286 |
| Spear Holdings RSC Ltd | $142,677,858 | 298,758 |
| PBCay One RSC Ltd | $142,617,684 | 298,632 |
| DANSKE BANK A/S | $141,669,708 | 296,647 |
| Raiffeisen Bank International AG | $127,465,320 | 280,082 |
| HUDSON EDGE INVESTMENT PARTNERS INC. | $109,030,664 | 228,303 |
Data compiled from public SEC filings. This is informational reporting, not investment advice.
Rep. Cleo Fields, who represents Louisiana in the U.S. House, disclosed a purchase of Taiwan Semiconductor Manufacturing Company Ltd. (TSM) stock in a Periodic Transaction Report filed under the STOCK Act. The transaction, made personally by the congressman rather than a spouse or dependent, is dated July 10, 2026, and falls in the $1,001 to … Read more
Coalescence Partners Investment Management, LP is an institutional investment manager that discloses its US equity holdings every quarter through SEC Form 13F filings. This profile is built to grow over time, giving a running record of the fund’s new positions, full exits, and changes in conviction as each filing becomes public. Rather than a one-off … Read more
Taiwan Semiconductor Manufacturing Co Ltd (NYSE: TSM) is showing up on our radar this week after a cluster of insider purchases hit SEC filings within a 48-hour window. Between July 20 and July 21, 2026, five separate open-market buys were disclosed, adding up to $301,350 in insider money spent on TSM shares. That kind of … Read more