BSX Congressional Trades
26 trades by 5 members of Congress (Apr 2017 – Feb 2026)
Last updated March 21, 2026
Congress members who trade BSX
Recent BSX trades
| Date | Politician | Action | Amount | Alpha |
|---|---|---|---|---|
| 2026-02-10 | Gilbert Cisneros | BUY | $1K-$15K | +54.31% |
| 2026-01-30 | Gilbert Cisneros | BUY | $1K-$15K | +23.78% |
| 2025-12-29 | Markwayne Mullin | BUY | $15K-$50K | -24.09% |
| 2025-12-24 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-11-18 | Gilbert Cisneros | BUY | $1K-$15K | +19.53% |
| 2025-10-31 | Lisa Mcclain | SELL | $1K-$15K | — |
| 2025-10-30 | Lisa Mcclain | BUY | $1K-$15K | +13.34% |
| 2025-10-30 | Lisa Mcclain | SELL | $1K-$15K | — |
| 2025-10-17 | Gilbert Cisneros | BUY | $1K-$15K | +15.41% |
| 2025-08-04 | Lisa Mcclain | SELL | $1K-$15K | — |
| 2025-07-31 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-06-26 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-06-11 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-05-13 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-04-28 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-03-17 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-02-24 | Gilbert Cisneros | SELL | $1K-$15K | — |
| 2025-02-13 | John Boozman | BUY | $1K-$15K | -43.50% |
| 2024-12-11 | Lisa Mcclain | BUY | $1K-$15K | -0.86% |
| 2023-10-03 | Markwayne Mullin | BUY | $1K-$15K | -22.96% |
| 2023-09-13 | Markwayne Mullin | BUY | $15K-$50K | -18.38% |
| 2020-04-14 | Josh Gottheimer | SELL | $1K-$15K | — |
| 2020-04-09 | Josh Gottheimer | SELL | $1K-$15K | — |
| 2020-03-18 | Gilbert Cisneros | BUY | $1K-$15K | +114.34% |
| 2020-02-27 | Josh Gottheimer | SELL | $1K-$15K | — |
| 2017-04-20 | Josh Gottheimer | SELL | $1K-$15K | — |
Frequently Asked Questions
Which Congress members trade BSX?
5 members of Congress have traded BSX. Top traders include: Markwayne Mullin, John Boozman, Josh Gottheimer, Lisa Mcclain, Gilbert Cisneros. See the full list below.
Is Congress buying or selling BSX?
Congress has made 11 purchases and 15 sales of BSX. The buy/sell ratio is 0.7x.
Do Congress BSX trades beat the market?
Congressional trades in BSX have a 55% win rate against the S&P 500, with an average alpha of +11.9%.
How is alpha calculated?
Alpha measures how much a trade outperformed the S&P 500 over the same holding period. For each politician, we show their dollar-weighted alpha—larger positions count more. A politician with +404% alpha on NVDA means their NVDA trades, weighted by size, beat the market by 404 percentage points.
What does the win rate mean?
Win rate is the percentage of trades that beat the S&P 500. Note that win rate treats all trades equally—a $5K trade counts the same as a $5M trade. This is why some traders show high alpha but moderate win rates (big wins, small losses) or low alpha but high win rates (consistent small wins).