Tortoise Senior Portfolio Manager Rob Thummel on CNBC ‘The Exchange’ Post author By Zito Partners Post date February 4, 2022 Categories In Front Page (ZP) Oil demand will increase in the summer, which will drive the price, says Tortoise’s Rob Thummel Rob Thummel, senior portfolio manager at Tortoise, joins ‘The Exchange’ to discuss the price of oil and its impact on the economy. Watch Rob here.