18 U.S. lawmakers have disclosed 53 Taiwan Semiconductor Manufacturing Company Ltd. trades under the STOCK Act — 27 buys and 26 sells between 2012 and 2026. Congress has been net buyers of TSM, and their disclosed buys are up 70.4% versus the latest close.
*Notional-weighted price return on lawmakers' disclosed buys of TSM, marked to the latest close — per-share (share counts aren't disclosed).
1 member disclosed a TSM purchase in the last 90 days (newest first).
Lawmakers ranked by notional-weighted return on their disclosed TSM buys (last ~3y), marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2026-07-10 | Cleo Fields | BUY | $1K–$15K | $434.11 | $430.49 2026-08-13 | -0.8% |
| 2026-05-18 | Michael T. McCaul | SELL | $1K–$15K | $395.95 | $430.49 2026-08-13 | -8.7% exit |
| 2026-05-08 | Richard W. Allen | BUY | $1K–$15K | $411.68 | $430.49 2026-08-13 | +4.6% |
| 2026-04-09 | Cleo Fields | BUY | $1K–$15K | $365.49 | $430.49 2026-08-13 | +17.8% |
| 2026-02-19 | Richard W. Allen | BUY | $1K–$15K | $360.39 | $430.49 2026-08-13 | +19.4% |
| 2026-01-08 | Cleo Fields | BUY | $1K–$15K | $318.01 | $430.49 2026-08-13 | +35.4% |
| 2025-10-23 | Cleo Fields | BUY | $100K–$250K | $290.73 | $430.49 2026-08-13 | +48.1% |
| 2025-10-10 | Jared Moskowitz | BUY | $1K–$15K | $280.66 | $430.49 2026-08-13 | +53.4% |
| 2025-08-15 | Cleo Fields | BUY | $15K–$50K | $238.88 | $430.49 2026-08-13 | +80.2% |
| 2025-08-13 | Cleo Fields | BUY | $50K–$100K | $241.44 | $430.49 2026-08-13 | +78.3% |
| 2025-08-13 | Cleo Fields | BUY | $250K–$500K | $241.44 | $430.49 2026-08-13 | +78.3% |
| 2025-08-13 | Cleo Fields | BUY | $1K–$15K | $241.44 | $430.49 2026-08-13 | +78.3% |
| 2025-08-01 | Cleo Fields | BUY | $1K–$15K | $235.21 | $430.49 2026-08-13 | +83.0% |
| 2025-08-01 | Cleo Fields | BUY | $100K–$250K | $235.21 | $430.49 2026-08-13 | +83.0% |
| 2025-07-17 | Lisa McClain | BUY | $1K–$15K | $245.60 | $430.49 2026-08-13 | +75.3% |
| 2025-03-11 | Julie Johnson | SELL | $1K–$15K | $170.97 | $430.49 2026-08-13 | -151.8% exit |
| 2024-09-23 | Josh Gottheimer | SELL | $1K–$15K | $174.76 | $430.49 2026-08-13 | -146.3% exit |
| 2024-03-12 | Josh Gottheimer | SELL | $1K–$15K | $144.40 | $430.49 2026-08-13 | -198.1% exit |
| 2023-12-11 | Thomas R Carper | SELL | $1K–$15K | $100.95 | $430.49 2026-08-13 | -326.4% exit |
| 2023-03-21 | Thomas H Tuberville | BUY | $1K–$15K | $92.50 | $430.49 2026-08-13 | +365.4% |
| 2023-02-21 | Thomas R Carper | SELL | $1K–$15K | $87.64 | $430.49 2026-08-13 | +35.1% rt |
| 2022-11-23 | Thomas H Tuberville | SELL | $1K–$15K | $81.97 | $430.49 2026-08-13 | -425.2% exit |
| 2022-10-17 | Thomas R Carper | BUY | $1K–$15K | $64.89 | $430.49 2026-08-13 | +563.4% |
| 2022-01-19 | Thomas R Carper | SELL | $1K–$15K | $131.01 | $430.49 2026-08-13 | +144.9% rt |
| 2021-11-16 | Pete Sessions | SELL | $1K–$15K | $118.08 | $430.49 2026-08-13 | +3.7% rt |
| 2021-10-06 | Thomas Suozzi | SELL | $15K–$50K | $109.34 | $430.49 2026-08-13 | -293.7% exit |
| 2021-09-16 | Katherine M. Clark | SELL | $1K–$15K | $120.79 | $430.49 2026-08-13 | -256.4% exit |
| 2021-06-16 | Marjorie Taylor Greene | BUY | $1K–$15K | $118.02 | $430.49 2026-08-13 | +264.8% |
| 2021-03-10 | Pete Sessions | BUY | $1K–$15K | $113.83 | $430.49 2026-08-13 | +278.2% |
| 2021-02-08 | Katherine M. Clark | SELL | $1K–$15K | $132.55 | $430.49 2026-08-13 | -224.8% exit |
| 2021-01-22 | Marjorie Taylor Greene | BUY | $1K–$15K | $129.14 | $430.49 2026-08-13 | +233.3% |
| 2021-01-11 | Josh Gottheimer | SELL | $1K–$15K | $122.60 | $430.49 2026-08-13 | -251.1% exit |
| 2020-08-04 | Josh Gottheimer | SELL | $1K–$15K | $80.19 | $430.49 2026-08-13 | -436.8% exit |
| 2020-08-04 | Greg Gianforte | SELL | $50K–$100K | $80.19 | $430.49 2026-08-13 | -436.8% exit |
| 2020-07-28 | Greg Gianforte | SELL | $100K–$250K | $76.92 | $430.49 2026-08-13 | -459.7% exit |
| 2020-07-27 | Josh Gottheimer | SELL | $1K–$15K | $83.25 | $430.49 2026-08-13 | -417.1% exit |
| 2020-06-26 | Sean Patrick Maloney | SELL | $1K–$15K | $56.33 | $430.49 2026-08-13 | -664.2% exit |
| 2020-03-13 | Greg Gianforte | SELL | $50K–$100K | $52.23 | $430.49 2026-08-13 | -10.0% rt |
| 2020-01-03 | Greg Gianforte | BUY | $50K–$100K | $58.06 | $430.49 2026-08-13 | +641.5% |
| 2019-12-17 | Greg Gianforte | SELL | $15K–$50K | $59.23 | $430.49 2026-08-13 | -626.8% exit |
| 2019-11-05 | Katherine M. Clark | SELL | $1K–$15K | $53.55 | $430.49 2026-08-13 | +25.0% rt |
| 2019-11-04 | Thomas R Carper | BUY | $1K–$15K | $53.49 | $430.49 2026-08-13 | +704.8% |
| 2019-10-15 | Greg Gianforte | SELL | $15K–$50K | $50.39 | $430.49 2026-08-13 | -754.3% exit |
| 2019-09-30 | Josh Gottheimer | SELL | $1K–$15K | $46.48 | $430.49 2026-08-13 | -826.2% exit |
| 2019-09-27 | Greg Gianforte | SELL | $15K–$50K | $45.51 | $430.49 2026-08-13 | +0.2% rt |
| 2019-05-12 | Katherine M. Clark | BUY | $1K–$15K | $42.83 | $430.49 2026-08-13 | +905.1% |
| 2019-04-24 | Greg Gianforte | BUY | $15K–$50K | $45.41 | $430.49 2026-08-13 | +848.0% |
| 2019-03-11 | Shelley M Capito | SELL | $1K–$15K | $38.64 | $430.49 2026-08-13 | +3.0% rt |
| 2018-03-21 | James B. Renacci | BUY | $1K–$15K | $44.70 | $430.49 2026-08-13 | +863.1% |
| 2017-09-08 | Shelley M Capito | BUY | $1K–$15K | $37.50 | $430.49 2026-08-13 | +1048.0% |
Return: buys marked to the latest close (open); sells tagged rt are realized round-trips vs a prior disclosed buy; exit = timing (stock move after the sale, seller's perspective).
18 members of the U.S. House and Senate have disclosed Taiwan Semiconductor Manufacturing Company Ltd. transactions under the STOCK Act — 27 purchases and 26 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
1 member disclosed a TSM purchase in the last 90 days — most recently Cleo Fields on 2026-07-10. See the "Lawmakers who bought TSM recently" section above for the dated list.
Notional-weighted, lawmakers' disclosed TSM buys are up 70.4% versus the latest close of $430.49. 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.