Rumble (NASDAQ: RUM) stock is seeing explosive gains in Wednesday's trading. The streaming-video company's share price was up 34.6% as of 11:45 a.m. ET. Rumble stock is continuing to rocket higher on the news that the company is set to receive $775 million in an investment from Tether -- the company behind the Tether stable-coin cryptocurrency.

Rumble (NASDAQ: RUM) stock is seeing big sell-offs in Friday's trading. The company's share price was down 8.1% as of 1 p.m. ET. Meanwhile, the S&P 500 index and the Nasdaq Composite index were down 1.

Rumble (RUM) operates a free video platform that offers livestreaming features. Users can subscribe to the channels of their favorite creators and gain access to both free and paid content. Incorporated in 2013 as an alternative to YouTube,

After a rapid upward shift in previous days, Rumble (NASDAQ: RUM) stock was gaining again in Tuesday morning trading. The share price was up 3.7% as of noon ET, though it had been up by as much as 17.