Why Is Remark (MARK) Stock Down 45% Today?

Group 1 - Remark has entered a five-year partnership with Microsoft, focusing on cloud services and marketing, which will involve $80 million in Microsoft Azure cloud services for Remark's AI business unit [1] - Microsoft will assist in attracting new customers to Remark AI by co-marketing its services on the Microsoft Azure Marketplace, providing $2 million in Azure cloud services credits and $700,000 in consulting and migration credits [1] - Remark amended its bylaws, changing the required support for shareholder meeting votes from a majority to one-third of the shares eligible to vote [1] Group 2 - Remark's stock experienced a significant rally of 264.4% during normal trading hours on the day the Microsoft deal was announced, with heavy trading of approximately 214 million shares [2] - On the following day, Remark's stock fell by 45.2%, with around 6.5 million shares traded, compared to the company's daily average trading volume of about 5.3 million shares [2]