Thursday, November 5, 2026: insiders filed 80 open-market purchases and 403 sales

The S&P 500 (SPY) closed at 733.00, -4.41% on the day.

• Insiders of US-listed companies filed 80 open-market purchases (about $124M) at 37 companies and 403 open-market sales (about $542M) at 120 companies; see every filing of the day.
• The largest open-market purchase filed: ARCH Venture Fund XIII, L.P. (10% owner) at Lyell Immunopharma (LYEL), about $25M (SEC Form 4).
• The largest open-market sale filed: WHITE MOUNTAINS INSURANCE GROUP LTD (10% owner) at Mediaalpha (MAX), about $76.5M (SEC Form 4).
• 6 stock-trade reports from members of Congress were disclosed; the largest range: Rep. Daniel Meuser (PA09) disclosed a partial sale of NVDA, reported range $1,001 - $15,000 (official disclosure).
• 133 fund and investor stake filings were recorded, led by Lei Zhang disclosed a 28.3% stake in CCG and may seek to influence the company (SEC filing).