The positive sentiment in the broader market, especially after the S&P 500's new all-time high, is likely contributing to Palantir's stock rise. The partnership with the Israeli military is a significant development that could promise future revenue streams and is positively perceived by investors. The heavy trading volume indicates strong investor interest, and the anticipation of the Q4 earnings report could be driving optimism. The 9.2% increase in stock price is a strong short-term bullish signal.