According to @StockMKTNewz, a CEO executed what they believe is the largest open-market purchase of their own company’s stock, shared on X on Sep 15, 2025, though the post did not include the ticker or size details for verification, source: @StockMKTNewz on X. Traders should confirm the transaction via the company’s Form 4, which the U.S. SEC requires insiders to file within two business days after the trade, source: U.S. SEC Form 4 guidance. Historically, sizable insider open-market purchases are associated with positive abnormal stock returns on average, indicating potential management confidence, source: Lakonishok and Lee, Journal of Finance 2001; Seyhun, Journal of Finance 1986. Because stock–crypto correlations have been elevated since 2020, a risk-on impulse from a high-profile insider buy can coincide with short-term strength in BTC and ETH, source: IMF 2022 analysis on crypto–stock correlations. For validation, ensure the Form 4 lists transaction code P for a purchase and assess size versus the CEO’s prior holdings to gauge signal strength, source: U.S. SEC Form 4 instructions.