Hedge fund billionaire Bill Ackman and his wife Neri Oxman have purchased a nearly 5% stake in the Tel Aviv Stock Exchange for $17.3 million. The purchase came as the exchange announced a secondary offering of 18.5% of its market value. The exchange plans to use the proceeds for investment in its technology infrastructure. Ackman has been a vocal supporter of Israel since the Oct. 7 Hamas terror attack and this is his first investment in Israel since the war began. He describes himself as both pro-Palestinian and pro-Israeli.