The Taiwan Semiconductor Manufacturing Company Ltd. line shows up 57 times in the congressional disclosure record between 2012 and 2026, filed by 20 members: 31 purchases against 26 sales. On balance the chamber has been net buyers, and the purchases sit up 66.1% against the latest close.
*Purchases only, weighted by the midpoint of each disclosed dollar band and marked to the latest close. Filings report a range, never a share count, so this follows the stock rather than anyone's position size.
Reported a TSM purchase in filings from the last 90 days, newest first. 3 members.
Members ranked by how their reported TSM purchases have moved since, over roughly the last three years, weighted by disclosed band midpoint and marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2026-10-09 | Cleo Fields | BUY | $1K–$15K | $453.31 | $424.37 2026-10-26 | -6.4% |
| 2026-09-22 | Gilbert Cisneros | BUY | $1K–$15K | $452.00 | $424.37 2026-10-26 | -6.1% |
| 2026-08-12 | Richard W. Allen | BUY | $1K–$15K | $429.15 | $424.37 2026-10-26 | -1.1% |
| 2026-07-10 | Cleo Fields | BUY | $1K–$15K | $434.11 | $424.37 2026-10-26 | -2.2% |
| 2026-05-18 | Michael T. McCaul | SELL | $1K–$15K | $395.95 | $424.37 2026-10-26 | -7.2% exit |
| 2026-05-08 | Richard W. Allen | BUY | $1K–$15K | $411.68 | $424.37 2026-10-26 | +3.1% |
| 2026-04-09 | Cleo Fields | BUY | $1K–$15K | $365.49 | $424.37 2026-10-26 | +16.1% |
| 2026-02-19 | Richard W. Allen | BUY | $1K–$15K | $360.39 | $424.37 2026-10-26 | +17.8% |
| 2026-01-08 | Cleo Fields | BUY | $1K–$15K | $318.01 | $424.37 2026-10-26 | +33.5% |
| 2025-10-23 | Cleo Fields | BUY | $100K–$250K | $290.73 | $424.37 2026-10-26 | +46.0% |
| 2025-10-10 | Jared Moskowitz | BUY | $1K–$15K | $280.66 | $424.37 2026-10-26 | +51.2% |
| 2025-08-15 | Cleo Fields | BUY | $15K–$50K | $238.88 | $424.37 2026-10-26 | +77.7% |
| 2025-08-13 | Cleo Fields | BUY | $50K–$100K | $241.44 | $424.37 2026-10-26 | +75.8% |
| 2025-08-13 | Cleo Fields | BUY | $250K–$500K | $241.44 | $424.37 2026-10-26 | +75.8% |
| 2025-08-13 | Cleo Fields | BUY | $1K–$15K | $241.44 | $424.37 2026-10-26 | +75.8% |
| 2025-08-01 | Cleo Fields | BUY | $1K–$15K | $235.21 | $424.37 2026-10-26 | +80.4% |
| 2025-08-01 | Cleo Fields | BUY | $100K–$250K | $235.21 | $424.37 2026-10-26 | +80.4% |
| 2025-07-17 | Lisa McClain | BUY | $1K–$15K | $245.60 | $424.37 2026-10-26 | +72.8% |
| 2025-03-11 | Julie Johnson | SELL | $1K–$15K | $170.97 | $424.37 2026-10-26 | -148.2% exit |
| 2024-09-23 | Josh Gottheimer | SELL | $1K–$15K | $174.76 | $424.37 2026-10-26 | -142.8% exit |
| 2024-03-12 | Josh Gottheimer | SELL | $1K–$15K | $144.40 | $424.37 2026-10-26 | -193.9% exit |
| 2023-12-11 | Thomas R Carper | SELL | $1K–$15K | $100.95 | $424.37 2026-10-26 | -320.4% exit |
| 2023-07-14 | Rohit Khanna | BUY | $1K–$15K | $105.14 | $424.37 2026-10-26 | +303.6% |
| 2023-03-21 | Thomas H Tuberville | BUY | $1K–$15K | — | — | — |
| 2023-02-21 | Thomas R Carper | SELL | $1K–$15K | $87.64 | $424.37 2026-10-26 | -384.2% exit |
| 2022-11-23 | Thomas H Tuberville | SELL | $1K–$15K | — | — | — exit |
| 2022-10-17 | Thomas R Carper | BUY | $1K–$15K | $64.89 | $424.37 2026-10-26 | +554.0% |
| 2022-01-19 | Thomas R Carper | SELL | $1K–$15K | $131.01 | $424.37 2026-10-26 | -223.9% exit |
| 2021-11-16 | Pete Sessions | SELL | $1K–$15K | $118.08 | $424.37 2026-10-26 | -259.4% exit |
| 2021-10-06 | Thomas Suozzi | SELL | $15K–$50K | $109.34 | $424.37 2026-10-26 | -288.1% exit |
| 2021-09-16 | Katherine M. Clark | SELL | $1K–$15K | $120.79 | $424.37 2026-10-26 | -251.3% exit |
| 2021-06-16 | Marjorie Taylor Greene | BUY | $1K–$15K | $118.02 | $424.37 2026-10-26 | +259.6% |
| 2021-03-10 | Pete Sessions | BUY | $1K–$15K | $113.83 | $424.37 2026-10-26 | +272.8% |
| 2021-02-08 | Katherine M. Clark | SELL | $1K–$15K | $132.55 | $424.37 2026-10-26 | -220.2% exit |
| 2021-01-22 | Marjorie Taylor Greene | BUY | $1K–$15K | $129.14 | $424.37 2026-10-26 | +228.6% |
| 2021-01-11 | Josh Gottheimer | SELL | $1K–$15K | $122.60 | $424.37 2026-10-26 | -246.1% exit |
| 2020-08-04 | Josh Gottheimer | SELL | $1K–$15K | $80.19 | $424.37 2026-10-26 | -429.2% exit |
| 2020-08-04 | Greg Gianforte | SELL | $50K–$100K | $80.19 | $424.37 2026-10-26 | -429.2% exit |
| 2020-07-28 | Greg Gianforte | SELL | $100K–$250K | $76.92 | $424.37 2026-10-26 | -451.7% exit |
| 2020-07-27 | Josh Gottheimer | SELL | $1K–$15K | $83.25 | $424.37 2026-10-26 | -409.8% exit |
| 2020-06-26 | Sean Patrick Maloney | SELL | $1K–$15K | $56.33 | $424.37 2026-10-26 | -653.4% exit |
| 2020-03-13 | Greg Gianforte | SELL | $50K–$100K | $52.23 | $424.37 2026-10-26 | -712.5% exit |
| 2020-01-03 | Greg Gianforte | BUY | $50K–$100K | $58.06 | $424.37 2026-10-26 | +630.9% |
| 2019-12-17 | Greg Gianforte | SELL | $15K–$50K | $59.23 | $424.37 2026-10-26 | -616.5% exit |
| 2019-11-05 | Katherine M. Clark | SELL | $1K–$15K | $53.55 | $424.37 2026-10-26 | -692.5% exit |
| 2019-11-04 | Thomas R Carper | BUY | $1K–$15K | $53.49 | $424.37 2026-10-26 | +693.4% |
| 2019-10-15 | Greg Gianforte | SELL | $15K–$50K | $50.39 | $424.37 2026-10-26 | -742.2% exit |
| 2019-09-30 | Josh Gottheimer | SELL | $1K–$15K | $46.48 | $424.37 2026-10-26 | -813.0% exit |
| 2019-09-27 | Greg Gianforte | SELL | $15K–$50K | $45.51 | $424.37 2026-10-26 | -832.5% exit |
| 2019-05-12 | Katherine M. Clark | BUY | $1K–$15K | $42.83 | $424.37 2026-10-26 | +890.8% |
Buys are marked to the latest close and treated as open. A sell tagged rt closes an earlier disclosed buy in the same name. exit shows how the stock moved after the member sold.
20 members of the U.S. House and Senate have disclosed Taiwan Semiconductor Manufacturing Company Ltd. transactions under the STOCK Act — 31 purchases and 26 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
3 members disclosed a TSM purchase in the last 90 days — most recently Cleo Fields on 2026-10-09. See the "Lawmakers who bought TSM recently" section above for the dated list.
Notional-weighted, lawmakers' disclosed TSM buys are up 66.1% versus the latest close of $424.37. Each trade's own return — and realized round-trips on matched sells — is in the Return column.
Yes. Under the 2012 STOCK Act, members of Congress may buy and sell individual stocks but must publicly disclose each transaction within 45 days. Bargo surfaces those filings so you can see who traded TSM and how it performed.