ABOUT CONGRESSIONAL TRADING IN BSX
As of May 2026, 10 members of Congress have collectively executed 28 disclosed trades on BSX (Boston Scientific Corporation
Common Stock). This includes 9 purchases and 19 sales, with bipartisan cluster activity detected 1 time — instances where members of both parties traded BSX within overlapping time windows, often a signal of coordinated information or policy-related activity.
MOST-ACTIVE TRADERS
The most active trader of BSX on Signal Congress is Markwayne Mullin with 3 trades, followed by Gilbert Cisneros (5 trades) and John Boozman (2 trades).
Signal Congress tracks BSX congressional trades through STOCK Act PTR filings from the House Clerk XML feed and Senate eFD system. Each trade is scored for conviction (0–100 scale) based on filing speed, amount, and corroboration signals, and analyzed for alpha generation against the SPY benchmark over 60-day and 180-day windows.