What it is. congress stock trades: Congress trades are the personal stock, ETF, option, and bond transactions of US senators, representatives, and their spouses, disclosed under the 2012 STOCK Act via Periodic Transaction Reports (PTRs). Members must file within 45 days of a trade; violations carry a token $200 fine, so late filings are common.
How to read it. Focus on committee assignments: a Senate Armed Services member buying defense contractors, or a House Energy & Commerce member buying pharma, warrants extra attention. Filter for trades over $50k (the top bucket midpoint is meaningful), and note that ranges like '$1,001-$15,000' are all you get — exact sizes are not disclosed.
Why it matters. Multiple academic studies (Ziobrowski et al., subsequent Wharton work) show a subset of members have historically outperformed the S&P 500, particularly on trades adjacent to pending legislation. Tracking PTRs is not a guarantee of alpha, but it's a legitimate signal about which sectors informed insiders are positioning in.