Hertz and Webull led mid-cap gains, with Hertz up nearly 100% after Pershing Square invested.

Hertz Global Holdings and Webull Stocks were top mid-cap gainers last week, with Hertz's stock climbing 99.03% after Bill Ackman's Pershing Square Capital Management acquired a significant stake. Webull's shares surged 119.05% on its Nasdaq debut. Other notable gainers include Metsera Inc. up 49.62%, Vista Energy SAB de CV up 35.52% due to a major acquisition, and Certara Inc. up 34.63%.