Doris O. Matsui is a Democratic U.S. Representative from California, serving since 2005. She represents a Sacramento-area district and is serving the 2025–2027 term. Matsui sits on the House Committee on Energy and Commerce, including the Energy and the Communications and Technology subcommittees.
Matsui has disclosed 109 trades with an estimated total trading volume of $37.8 million, placing her among the more active congressional traders. Her activity is heavily concentrated in a single frequently traded holding, which accounts for 106 of the 109 transactions, with additional trades in TME, ZM, and NU. She reports 82 buys and 27 sells, indicating a strong net-buying pattern. The concentration of trades in one primary position distinguishes her portfolio activity from members with more diversified transaction histories.
| Date | Asset | Type | Amount |
|---|---|---|---|
| 2025-12-15 | U.S. Treasury Note due 8/31/2030FUND | buy | $1M+ |
| 2025-12-15 | U.S. Treasury Note due 8/31/2029FUND | buy | $1M+ |
| 2025-12-15 | U.S. Treasury Note due 2/28/2030FUND | buy | $1M+ |
| 2025-12-15 | U.S. Treasury Note due 2/28/2029FUND | buy | $1M+ |
| 2024-09-03 | U.S. Treasury Note due 05/31/2026FUND | buy | $500K – $1M |
| 2024-05-29 | Intrinsic Exchange Group, Inc.OTHE | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 7/31/2027FUND | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 5/31/2028FUND | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 3/15/2027FUND | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 12/15/2026FUND | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 10/31/2027FUND | buy | $1M+ |
| 2024-04-23 | U.S. Treasury Note due 1/31/2028FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 9/15/2025FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 6/15/2025FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 3/15/2026FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 3/15/2025FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 12/15/2025FUND | buy | $1M+ |
| 2024-01-16 | U.S. Treasury Note due 12/15/2024FUND | buy | $500K – $1M |
| 2023-11-06 | U.S. Treasury Note due 11/30/2028FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 03/31/2024FUND | sell | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 02/29/2028FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 02/28/2027FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 05/31/2027FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 05/31/2028FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 08/31/2027FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 08/31/2028FUND | buy | $1M+ |
| 2023-11-06 | U.S. Treasury Note due 11/30/2027FUND | buy | $1M+ |
| 2023-10-25 | U.S. Treasury Note due 05/31/2024FUND | sell | $1M+ |
| 2023-10-17 | Note Receivable from Intrinsic Exchange Group, Inc. | buy | $1M+ |
| 2023-05-30 | U.S. Treasury Note due 05/31/2024FUND | buy | $1M+ |
| 2023-04-18 | U.S. Treasury Note due 4/15/2024FUND | buy | $250K – $500K |
| 2023-03-30 | U.S. Treasury Note due 3/31/2024FUND | buy | $1M+ |
| 2023-03-13 | U.S. Treasury Note due 4/15/2023FUND | buy | $100K – $250K |
| 2022-06-03 | Intrinsic Exchange Group, Inc Convertible Promissory NoteOTHE | buy | $1M+ |
| 2021-06-11 | NU | buy | $500K – $1M |
| 2021-01-22 | U.S. Treasury Note due 5/31/2021FUND | sell | $1M+ |
| 2021-01-22 | U.S. Treasury Note due 2/28/2021FUND | sell | $1M+ |
| 2020-12-28 | U.S. Treasury Note due 7/15/2021FUND | sell | $250K – $500K |
| 2020-10-30 | SP U.S. Treasury Note 11/30/2020FUND | sell | $50K – $100K |
| 2020-10-29 | SP U.S. Treasury Note 11/30/2020FUND | sell | $50K – $100K |
| 2020-10-06 | SP U.S. Treasury Note 11/15/2021FUND | sell | $50K – $100K |
| 2020-09-25 | SP U.S. Treasury Note 5/31/2022FUND | buy | $50K – $100K |
| 2020-09-17 | SP U.S. Treasury Note 7/15/2021FUND | sell | $250K – $500K |
| 2020-09-04 | ZM | sell | $50K – $100K |
| 2020-08-26 | SP U.S. Treasury Note 8/31/2022FUND | buy | $50K – $100K |
| 2020-08-26 | U.S. Treasury Note 2/28/2021FUND | buy | $1K – $15K |
| 2020-08-26 | U.S. Treasury Note 11/30/2020FUND | buy | $1K – $15K |
| 2020-07-31 | U.S. Treasury Note 9/15/2020FUND | buy | $500K – $1M |
| 2020-07-21 | TME | sell | $15K – $50K |
| 2017-06-29 | Westmed Holding CompanyOTHE | sell | $1K – $15K |