Workhorse shares at last check jumped 17% to $16.35 a share on more than triple average daily volume.
The rise in Workhorse's stock, seemingly driven by no specific news, matches the activity seen in other stocks that have captured the imaginations and pocketbooks of retail traders.
These investors are encouraging one another on message boards like Reddit to jump into the stock-trading game on expectations of quick profits.
Wendy's shares jumped more than 18% while Clover jumped more than 50% Tuesday.
Clover Health is a Medicare insurance startup that went public via a SPAC from venture capitalist Chamath Palihapitiya.
"Today's upward movement is just the tip," one poster wrote on Reddit on Tuesday. "Like an iceberg, 90% of this stock's potential is unseen."
"Bought me some," another said. "Let’s get it up there! Hearing great things."
"Everyone hold if you can," a third poster said. "This is just literally Day 1 of the squeeze. Just getting started. $CLOV to $250."
Meanwhile, Wendy's has a fan in TheStreet Founder Jim Cramer, who says the stock should be pushed higher.
Wendy's last month raised its full-year profit forecast following stronger-than-expected first quarter earnings and same-store-sales. The company is also backed by activist shareholder Trian Fund Management.