Taiwan Semiconductor ADR (TSM): Congress and insider trades
Who in Congress and inside the company traded TSM, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Taiwan Semiconductor ADR (TSM) is a listed stock on NYSE.
- 18 members of Congress filed 30 buys and 37 sells of TSM, the latest published 2026-09-23 (23 September 2026).
- Insiders filed 115 open market buys worth $2.5M and 1 sell worth $3.8K, the latest filed 2026-09-09 (9 September 2026).
- 4 cluster buys of TSM by three or more insiders within 30 days.
- Across 22 scored buys, Congress averaged +6.6% against the S&P 500 (SPY) over the 90 days after disclosure, with 64% of them ahead of the index. That result is modestly above the market, but could still be chance.
- Across 9 scored buys, Insiders averaged +11.0% against the S&P 500 (SPY) over the 90 days after disclosure, with 78% of them ahead of the index. That result is too few trades to draw a conclusion.
- Data as of 2026-09-29 (29 September 2026).
Congress buys 30 18 members
Congress sells 37
Insider buys 115 $2.5M
Insider sells 1 $3.8K
Congress buys vs S&P, 90d +6.6% 22 scored buys
Insider buys vs S&P, 90d +11.0% 9 scored buys
Congress trades in TSM
as of 2026-09-23| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 23 Sep 2026 | Rick Allen (R-GA) | buy | 1K–15K | 41 | n/a |
| 31 Jul 2026 | Cleo Fields (D-LA) | buy | 1K–15K | 20 | n/a |
| 13 Jul 2026 | Michael McCaul (R-TX) | buy | 15K–50K | 20 | n/a |
| 17 Jun 2026 | Rick Allen (R-GA) | buy | 1K–15K | 39 | -10.3% |
| 11 Jun 2026 | Ro Khanna (D-CA) | buy | 1K–15K | 32 | -1.5% |
| 11 Jun 2026 | Michael McCaul (R-TX) | sell | 1K–15K | 34 | n/a |
| 11 Jun 2026 | Michael McCaul (R-TX) | sell | 1K–15K | 23 | n/a |
| 21 Apr 2026 | Cleo Fields (D-LA) | buy | 1K–15K | 11 | +4.4% |
| 9 Apr 2026 | Ro Khanna (D-CA) | sell | 1K–15K | 25 | n/a |
| 13 Mar 2026 | Julia Letlow (R-LA) | buy | 1K–15K | 38 | +14.1% |
| 12 Mar 2026 | Ro Khanna (D-CA) | sell | 1K–15K | 24 | n/a |
| 12 Mar 2026 | Ro Khanna (D-CA) | buy | 1K–15K | 24 | +13.4% |
| 12 Mar 2026 | Rick Allen (R-GA) | buy | 1K–15K | 20 | +13.4% |
| 10 Mar 2026 | Gil Cisneros (D-CA) | buy | 1K–15K | 11 | +11.8% |
| 10 Mar 2026 | Gil Cisneros (D-CA) | buy | 100K–250K | 28 | +11.8% |
| 16 Feb 2026 | Gil Cisneros (D-CA) | buy | 1K–15K | 14 | +0.6% |
| 4 Feb 2026 | Cleo Fields (D-LA) | buy | 1K–15K | 26 | +18.6% |
| 14 Jan 2026 | Julia Letlow (R-LA) | buy | 15K–50K | 447 | +8.7% |
| 14 Jan 2026 | Julia Letlow (R-LA) | sell | 1K–15K | 173 | n/a |
| 14 Jan 2026 | Julia Letlow (R-LA) | sell | 1K–15K | 354 | n/a |
| 13 Jan 2026 | Gil Cisneros (D-CA) | sell | 1K–15K | 19 | n/a |
| 16 Dec 2025 | Gil Cisneros (D-CA) | buy | 1K–15K | 27 | +25.1% |
| 15 May 2025 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 35 | n/a |
| 13 May 2025 | Bruce Westerman (R-AR) | sell | 1K–15K | 21 | n/a |
| 20 Nov 2023 | Michael McCaul (R-TX) | buy | 50K–100K | 21 | +18.7% |
| 20 Nov 2023 | Michael McCaul (R-TX) | buy | 100K–250K | 36 | +18.7% |
| 20 Nov 2023 | Michael McCaul (R-TX) | buy | 50K–100K | 21 | +18.7% |
| 20 Nov 2023 | Michael McCaul (R-TX) | buy | 50K–100K | 36 | +18.7% |
| 14 Aug 2023 | Daniel S. Goldman (D-NY) | sell | 50K–100K | 34 | n/a |
| 9 Aug 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 24 | -0.9% |
| 20 Apr 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 42 | +5.0% |
| 12 Apr 2023 | Tommy Tuberville (R-AL) | buy | 1K–15K | 22 | +11.6% |
| 28 Mar 2023 | Tom Carper (D-DE) | sell | 1K–15K | 433 | n/a |
| 21 Mar 2023 | Daniel S. Goldman (D-NY) | sell | 50K–100K | 21 | n/a |
| 10 Mar 2023 | Ro Khanna (D-CA) | buy | 15K–50K | 26 | +5.8% |
| 1 Mar 2023 | Tom Carper (D-DE) | sell | 1K–15K | 8 | n/a |
| 14 Dec 2022 | Tommy Tuberville (R-AL) | sell | 1K–15K | 21 | n/a |
| 7 Nov 2022 | Diana Harshbarger (R-TN) | sell | 1K–15K | 32 | n/a |
| 7 Nov 2022 | Diana Harshbarger (R-TN) | sell | 1K–15K | 32 | n/a |
| 7 Nov 2022 | Diana Harshbarger (R-TN) | sell | 1K–15K | 32 | n/a |
| 3 Nov 2022 | Tom Carper (D-DE) | buy | 1K–15K | 17 | +44.3% |
| 12 May 2022 | Ro Khanna (D-CA) | sell | 15K–50K | 30 | n/a |
| 12 May 2022 | Ro Khanna (D-CA) | sell | 15K–50K | 30 | n/a |
| 12 May 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 30 | n/a |
| 18 Apr 2022 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 18 | n/a |
| 11 Apr 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 30 | n/a |
| 11 Apr 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 30 | n/a |
| 14 Feb 2022 | Pete Sessions (R-TX) | sell | 1K–15K | 87 | n/a |
| 8 Dec 2021 | Ro Khanna (D-CA) | buy | 15K–50K | 35 | -3.8% |
| 8 Dec 2021 | Ro Khanna (D-CA) | buy | 15K–50K | 35 | -3.8% |
| 6 Nov 2021 | Tom Suozzi (D-NY) | sell | 15K–50K | 30 | n/a |
| 26 Oct 2021 | Diana Harshbarger (R-TN) | sell | 1K–15K | 25 | n/a |
| 26 Oct 2021 | Diana Harshbarger (R-TN) | sell | 1K–15K | 25 | n/a |
| 26 Oct 2021 | Diana Harshbarger (R-TN) | sell | 1K–15K | 25 | n/a |
| 15 Oct 2021 | Katherine Clark (D-MA) | exchange | 1K–15K | 28 | n/a |
| 24 Sep 2021 | Tom Suozzi (D-NY) | buy | 15K–50K | 104 | -2.4% |
| 22 Jun 2021 | Marjorie Taylor Greene (R-GA) | buy | 1K–15K | 5 | -3.5% |
| 29 May 2021 | Sara Jacobs (D-CA) | sell | 50K–100K | 49 | n/a |
| 4 May 2021 | Pete Sessions (R-TX) | buy | 1K–15K | 54 | -3.4% |
| 17 Mar 2021 | Peter Meijer (R-MI) | sell | 50K–100K | 27 | n/a |
| 11 Mar 2021 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 35 | n/a |
| 3 Mar 2021 | Katherine Clark (D-MA) | sell | 1K–15K | 22 | n/a |
| 24 Feb 2021 | Peter Meijer (R-MI) | sell | 1K–15K | 15 | n/a |
| 24 Feb 2021 | Peter Meijer (R-MI) | sell | 1K–15K | 41 | n/a |
| 20 Feb 2021 | Marjorie Taylor Greene (R-GA) | buy | 1K–15K | 28 | -23.5% |
| 10 Feb 2021 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 29 | n/a |
| 29 Dec 2020 | Katherine Clark (D-MA) | sell | 1K–15K | 53 | n/a |
| 4 Dec 2020 | Katherine Clark (D-MA) | sell | 1K–15K | 42 | n/a |
Nothing matches that search.
Insider trades in TSM
as of 2026-09-09 Showing the latest 100 of 116.
| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 9 Sep 2026 | Cao Min | buy | 56 | $76.20 | $4.3K | n/a |
| 9 Sep 2026 | Chen Pei-Hung | buy | 46 | $76.20 | $3.5K | n/a |
| 9 Sep 2026 | Huang Jen-Chau | buy | 30 | $76.20 | $2.3K | n/a |
| 9 Sep 2026 | He Jun | buy | 46 | $76.20 | $3.5K | n/a |
| 9 Sep 2026 | Lee Chun-Hsien | buy | 52 | $76.20 | $4.0K | n/a |
| 9 Sep 2026 | Tien Bor-Zen | buy | 43 | $76.20 | $3.3K | n/a |
| 9 Sep 2026 | Lu Lee-Chung | buy | 51 | $76.20 | $3.9K | n/a |
| 9 Sep 2026 | Lu Chin-Sheng | buy | 38 | $76.20 | $2.9K | n/a |
| 9 Sep 2026 | Hsu Kuo-Chin | buy | 55 | $76.20 | $4.2K | n/a |
| 9 Sep 2026 | Wang Ying-Lang | buy | 54 | $76.20 | $4.1K | n/a |
| 9 Sep 2026 | Yeap Choh Fei | buy | 54 | $76.20 | $4.1K | n/a |
| 9 Sep 2026 | Lin Chris Horng-Dar | buy | 47 | $76.20 | $3.6K | n/a |
| 9 Sep 2026 | Chuang Juiping | buy | 50 | $76.20 | $3.8K | n/a |
| 9 Sep 2026 | Hou Yung-Chin | buy | 61 | $76.20 | $4.6K | n/a |
| 9 Sep 2026 | Chuang Tzu-Sou | buy | 47 | $76.20 | $3.6K | n/a |
| 9 Sep 2026 | Lin Shyue-Shyh | buy | 44 | $76.20 | $3.4K | n/a |
| 9 Sep 2026 | Chin Yung-Pei | buy | 71 | $76.20 | $5.4K | n/a |
| 9 Sep 2026 | Wu Yi-Huang | buy | 40 | $76.20 | $3.0K | n/a |
| 9 Sep 2026 | Fang Shu-Hua | buy | 56 | $76.20 | $4.3K | n/a |
| 9 Sep 2026 | Jang Syun-Ming | buy | 49 | $76.20 | $3.7K | n/a |
| 9 Sep 2026 | Wu Shien-Yang | buy | 57 | $76.20 | $4.3K | n/a |
| 9 Sep 2026 | Mii Yuh-Jier | buy | 71 | $76.20 | $5.4K | n/a |
| 9 Sep 2026 | Wei Che-Chia | buy | 149 | $76.20 | $11.4K | n/a |
| 9 Sep 2026 | Chen Chih-Ho | buy | 32 | $76.20 | $2.4K | n/a |
| 9 Sep 2026 | Hwang Yuan-Ko | buy | 40 | $76.20 | $3.0K | n/a |
| 9 Sep 2026 | Ku Yao-Ching | buy | 47 | $76.20 | $3.6K | n/a |
| 9 Sep 2026 | Chang Tzonz-Sheng | buy | 53 | $76.20 | $4.0K | n/a |
| 9 Sep 2026 | Yuan Lipen | buy | 41 | $76.20 | $3.1K | n/a |
| 9 Sep 2026 | Yoo Chue-San | buy | 53 | $76.20 | $4.0K | n/a |
| 9 Sep 2026 | Zhang Kevin Xiaoqiang | buy | 61 | $76.20 | $4.6K | n/a |
| 4 Sep 2026 | Fang Shu-Hua | buy | 2,000 | $77.09 | $154K | n/a |
| 20 Aug 2026 | Yuan Lipen | buy | 1,000 | $74.50 | $74.5K | n/a |
| 20 Aug 2026 | Yuan Lipen | buy | 350 | $73.58 | $25.8K | n/a |
| 20 Aug 2026 | Yuan Lipen | buy | 1,000 | $73.77 | $73.8K | n/a |
| 10 Aug 2026 | Cao Min | buy | 55 | $73.31 | $4.0K | n/a |
| 10 Aug 2026 | Ku Yao-Ching | buy | 47 | $73.31 | $3.4K | n/a |
| 10 Aug 2026 | Hwang Yuan-Ko | buy | 40 | $73.31 | $2.9K | n/a |
| 10 Aug 2026 | Wu Shien-Yang | buy | 57 | $73.31 | $4.2K | n/a |
| 10 Aug 2026 | Lu Lee-Chung | buy | 52 | $73.31 | $3.8K | n/a |
| 10 Aug 2026 | Hou Yung-Chin | buy | 63 | $73.31 | $4.6K | n/a |
| 10 Aug 2026 | Yuan Lipen | buy | 42 | $73.31 | $3.1K | n/a |
| 10 Aug 2026 | Zhang Kevin Xiaoqiang | buy | 63 | $73.31 | $4.6K | n/a |
| 10 Aug 2026 | Chuang Juiping | buy | 49 | $73.31 | $3.6K | n/a |
| 10 Aug 2026 | Hsu Kuo-Chin | buy | 54 | $73.31 | $4.0K | n/a |
| 10 Aug 2026 | Yoo Chue-San | buy | 51 | $73.31 | $3.7K | n/a |
| 10 Aug 2026 | Fang Shu-Hua | buy | 57 | $73.31 | $4.2K | n/a |
| 10 Aug 2026 | Wu Yi-Huang | buy | 41 | $73.31 | $3.0K | n/a |
| 10 Aug 2026 | Yeap Choh Fei | buy | 57 | $73.31 | $4.2K | n/a |
| 10 Aug 2026 | Tien Bor-Zen | buy | 42 | $73.31 | $3.1K | n/a |
| 10 Aug 2026 | Lin Chris Horng-Dar | buy | 49 | $73.31 | $3.6K | n/a |
| 10 Aug 2026 | He Jun | buy | 46 | $73.31 | $3.4K | n/a |
| 10 Aug 2026 | Lin Shyue-Shyh | buy | 47 | $73.31 | $3.4K | n/a |
| 10 Aug 2026 | Chen Pei-Hung | buy | 46 | $73.31 | $3.4K | n/a |
| 10 Aug 2026 | Mii Yuh-Jier | buy | 72 | $73.31 | $5.3K | n/a |
| 10 Aug 2026 | Chen Chih-Ho | buy | 33 | $73.31 | $2.4K | n/a |
| 10 Aug 2026 | Lu Chin-Sheng | buy | 39 | $73.31 | $2.9K | n/a |
| 10 Aug 2026 | Jang Syun-Ming | buy | 50 | $73.31 | $3.7K | n/a |
| 10 Aug 2026 | Wang Ying-Lang | buy | 55 | $73.31 | $4.0K | n/a |
| 10 Aug 2026 | Chang Tzonz-Sheng | buy | 54 | $73.31 | $4.0K | n/a |
| 10 Aug 2026 | Chuang Tzu-Sou | buy | 47 | $73.31 | $3.4K | n/a |
| 10 Aug 2026 | Wei Che-Chia | buy | 152 | $73.31 | $11.1K | n/a |
| 10 Aug 2026 | Huang Jen-Chau | buy | 29 | $73.31 | $2.1K | n/a |
| 10 Aug 2026 | Lee Chun-Hsien | buy | 54 | $73.31 | $4.0K | n/a |
| 10 Aug 2026 | Chin Yung-Pei | buy | 72 | $73.31 | $5.3K | n/a |
| 4 Aug 2026 | Tien Bor-Zen | buy | 1,000 | $73.06 | $73.1K | n/a |
| 30 Jul 2026 | Tien Bor-Zen | buy | 1,000 | $67.97 | $68.0K | n/a |
| 23 Jul 2026 | Tien Bor-Zen | buy | 1,000 | $74.13 | $74.1K | n/a |
| 23 Jul 2026 | Tien Bor-Zen | buy | 3,000 | $74.39 | $223K | n/a |
| 22 Jul 2026 | Lin Shyue-Shyh | buy | 1,000 | $72.65 | $72.7K | n/a |
| 22 Jul 2026 | Lin Shyue-Shyh | buy | 1,000 | $74.13 | $74.1K | n/a |
| 21 Jul 2026 | Lin Shyue-Shyh | buy | 1,000 | $71.94 | $71.9K | n/a |
| 21 Jul 2026 | Lin Shyue-Shyh | buy | 2,000 | $71.71 | $143K | n/a |
| 16 Jul 2026 | Chen Chih-Ho | sell | 50 | $75.22 | $3.8K | n/a |
| 16 Jul 2026 | Chen Chih-Ho | buy | 50 | $74.60 | $3.7K | n/a |
| 9 Jul 2026 | Wei Che-Chia | buy | 146 | $76.62 | $11.2K | n/a |
| 9 Jul 2026 | Fang Shu-Hua | buy | 54 | $76.62 | $4.1K | n/a |
| 9 Jul 2026 | He Jun | buy | 45 | $76.62 | $3.4K | n/a |
| 9 Jul 2026 | Chen Pei-Hung | buy | 44 | $76.62 | $3.4K | n/a |
| 9 Jul 2026 | Ku Yao-Ching | buy | 46 | $76.62 | $3.5K | n/a |
| 9 Jul 2026 | Wu Shien-Yang | buy | 54 | $76.62 | $4.1K | n/a |
| 9 Jul 2026 | Mii Yuh-Jier | buy | 68 | $76.62 | $5.2K | n/a |
| 9 Jul 2026 | Chang Tzonz-Sheng | buy | 52 | $76.62 | $4.0K | n/a |
| 9 Jul 2026 | Chen Chih-Ho | buy | 31 | $76.62 | $2.4K | n/a |
| 9 Jul 2026 | Chuang Tzu-Sou | buy | 45 | $76.62 | $3.4K | n/a |
| 9 Jul 2026 | Liaw Yung-Haw | buy | 48 | $76.62 | $3.7K | n/a |
| 9 Jul 2026 | Cao Min | buy | 54 | $76.62 | $4.1K | n/a |
| 9 Jul 2026 | Hou Yung-Chin | buy | 61 | $76.62 | $4.7K | n/a |
| 9 Jul 2026 | Hsu Kuo-Chin | buy | 52 | $76.62 | $4.0K | n/a |
| 9 Jul 2026 | Lee Chun-Hsien | buy | 50 | $76.62 | $3.8K | n/a |
| 9 Jul 2026 | Lu Lee-Chung | buy | 49 | $76.62 | $3.8K | n/a |
| 9 Jul 2026 | Chin Yung-Pei | buy | 69 | $76.62 | $5.3K | n/a |
| 9 Jul 2026 | Hwang Yuan-Ko | buy | 40 | $76.62 | $3.1K | n/a |
| 9 Jul 2026 | Yoo Chue-San | buy | 51 | $76.62 | $3.9K | n/a |
| 9 Jul 2026 | Wu Yi-Huang | buy | 39 | $76.62 | $3.0K | n/a |
| 9 Jul 2026 | Tien Bor-Zen | buy | 40 | $76.62 | $3.1K | n/a |
| 9 Jul 2026 | Zhang Kevin Xiaoqiang | buy | 61 | $76.62 | $4.7K | n/a |
| 9 Jul 2026 | Lu Chin-Sheng | buy | 37 | $76.62 | $2.8K | n/a |
| 9 Jul 2026 | Jang Syun-Ming | buy | 47 | $76.62 | $3.6K | n/a |
| 9 Jul 2026 | Lin Chris Horng-Dar | buy | 46 | $76.62 | $3.5K | n/a |
| 9 Jul 2026 | Wang Ying-Lang | buy | 53 | $76.62 | $4.1K | n/a |
Nothing matches that search.
Cluster buys in TSM
Related pages
Frequently asked questions
Who has bought TSM?
30 Congress buys by 18 members and 115 insider buys are on file. The tables on this page list every one.
Did buying TSM after a disclosure beat the market?
Across 22 scored buys, Congress averaged +6.6% against the S&P 500 (SPY) over the 90 days after disclosure, with 64% of them ahead of the index. That result is modestly above the market, but could still be chance. Across 9 scored buys, Insiders averaged +11.0% against the S&P 500 (SPY) over the 90 days after disclosure, with 78% of them ahead of the index. That result is too few trades to draw a conclusion. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.