DOVER, DELAWARE - JULY 20: John H. Nemechek, driver of the #42 Hertz Toyota, walks onstage during driver intros prior to the NASCAR Cup Series AutoTrader EchoPark Automotive 400 at Dover Motor Speedway on July 20, 2025 in Dover, Delaware. (Photo by Meg Oliphant/Getty Images) Getty Images Hertz's stock price is up 64% in 2025, according to Google Finance. Most of that rise is due to the April 17 news of Bill Ackman's Pershing Square taking a 20% stake in the car rental company, reported Proactive. Hertz stoc ...