According to the source, shares of American Bitcoin jumped after the company added 163 million dollars to its BTC treasury, with the post published on Oct 27, 2025, source: the provided social media post dated Oct 27, 2025. The identified catalyst was the 163 million dollar BTC balance sheet addition, while the post did not disclose the ticker, exact percentage move, or closing price, source: the provided social media post dated Oct 27, 2025. This headline frames BTC treasury expansion as the driver of the equity move for a crypto-exposed stock, which is trading-relevant for sentiment tracking across BTC-linked equities, source: the provided social media post dated Oct 27, 2025.