Carmax Inc (KMX): Congress and insider trades
Who in Congress and inside the company traded KMX, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Carmax Inc (KMX) is a listed stock on NYSE.
- 6 members of Congress filed 35 buys and 14 sells of KMX, the latest published 2026-09-11 (11 September 2026).
- Insiders filed 5 open market buys worth $1.0M and 0 sells worth $0, the latest filed 2026-06-26 (26 June 2026).
- 1 cluster buy of KMX by three or more insiders within 30 days.
- Across 13 scored buys, Congress averaged -6.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 38% of them ahead of the index. That result is modestly below the market, but could still be chance.
- Across 5 scored buys, Insiders averaged +3.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 100% of them ahead of the index. That result is too few trades to tell.
- Data as of 2026-09-29 (29 September 2026).
Congress trades in KMX
as of 2026-09-11| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 11 Sep 2026 | Gil Cisneros (D-CA) | buy | 1K–15K | 22 | n/a |
| 15 May 2025 | Ro Khanna (D-CA) | sell | 1K–15K | 19 | n/a |
| 15 May 2025 | Ro Khanna (D-CA) | buy | 1K–15K | 32 | -22.4% |
| 15 May 2025 | Ro Khanna (D-CA) | buy | 1K–15K | 32 | -22.4% |
| 10 Nov 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 19 | +3.3% |
| 7 Sep 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 33 | -20.8% |
| 7 Sep 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 33 | -20.8% |
| 10 May 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 13 | +8.9% |
| 4 Jan 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 12 | -9.3% |
| 4 Jan 2023 | Ro Khanna (D-CA) | buy | 1K–15K | 12 | -9.3% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 32 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 33 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 28 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 33 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 20 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 28 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 8 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 29 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 32 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 20 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 29 | +6.5% |
| 7 Dec 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 8 | +6.5% |
| 14 Oct 2022 | Michael McCaul (R-TX) | sell | 50K–100K | 41 | n/a |
| 14 Oct 2022 | Michael McCaul (R-TX) | sell | 50K–100K | 41 | n/a |
| 13 Oct 2022 | David McKinley (R-WV) | sell | 1K–15K | 21 | n/a |
| 21 Sep 2022 | Michael McCaul (R-TX) | buy | 15K–50K | 19 | -29.3% |
| 21 Sep 2022 | Michael McCaul (R-TX) | buy | 15K–50K | 19 | -29.3% |
| 11 Jul 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 10 | n/a |
| 15 Jun 2022 | Michael McCaul (R-TX) | sell | 1K–15K | 40 | n/a |
| 15 Jun 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 18 | n/a |
| 15 Jun 2022 | Michael McCaul (R-TX) | sell | 1K–15K | 40 | n/a |
| 15 Jun 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 31 | -8.5% |
| 12 May 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 23 | n/a |
| 12 May 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 25 | +6.0% |
| 11 Mar 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 22 | +3.7% |
| 11 Mar 2022 | Ro Khanna (D-CA) | buy | 1K–15K | 19 | +3.7% |
| 4 Mar 2022 | Don Beyer (D-VA) | sell | 15K–50K | 30 | n/a |
| 24 Feb 2022 | Michael McCaul (R-TX) | buy | 50K–100K | 27 | -0.5% |
| 24 Feb 2022 | Michael McCaul (R-TX) | buy | 100K–250K | 27 | -0.5% |
| 9 Feb 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 28 | n/a |
| 9 Feb 2022 | Ro Khanna (D-CA) | sell | 1K–15K | 18 | n/a |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 22 | -7.7% |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 42 | -7.7% |
| 16 Sep 2021 | Ro Khanna (D-CA) | buy | 1K–15K | 29 | -7.7% |
| 14 Aug 2021 | Susie Lee (D-NV) | sell | 1K–15K | 37 | n/a |
| 14 Aug 2021 | Ro Khanna (D-CA) | sell | 15K–50K | 42 | n/a |
| 2 Mar 2021 | David McKinley (R-WV) | buy | 1K–15K | 7 | -14.6% |
| 9 Dec 2020 | Susie Lee (D-NV) | buy | 1K–15K | 62 | n/a |
| 9 Dec 2020 | Susie Lee (D-NV) | buy | 1K–15K | 50 | n/a |
Nothing matches that search.
Insider trades in KMX
as of 2026-06-26| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 26 Jun 2026 | Shinder Marcella | buy | 574 | $52.01 | $29.9K | +3.3% |
| 26 Jun 2026 | ONeil Mark F | buy | 4,800 | $52.36 | $251K | +3.3% |
| 26 Jun 2026 | Chawla Sona | buy | 2,000 | $53.39 | $107K | +3.3% |
| 24 Jun 2026 | Bensen Peter J | buy | 2,500 | $52.20 | $131K | +3.8% |
| 24 Jun 2026 | Barr Keith | buy | 9,400 | $53.01 | $498K | +3.8% |
Nothing matches that search.
Cluster buys in KMX
| Last filed | Stock | Insiders | Trades | Total value | Days spanned | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 26 Jun 2026 | KMX | 5 | 5 | $1.0M | 2 | +3.3% |
Related pages
Frequently asked questions
Who has bought KMX?
35 Congress buys by 6 members and 5 insider buys are on file. The tables on this page list every one.
Did buying KMX after a disclosure beat the market?
Across 13 scored buys, Congress averaged -6.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 38% of them ahead of the index. That result is modestly below the market, but could still be chance. Across 5 scored buys, Insiders averaged +3.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 100% of them ahead of the index. That result is too few trades to tell. 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.