Tesla shares are down and Super Micro Computer declines after both stocks posted sharp gains on Tuesday, MicroStrategy follows Bitcoin’s price lower, and GameStop jumps following a cryptic tweet from the trader known as ‘Roaring Kitty.

Major U.S. indexes were little changed and slightly higher at midday Thursday, looking to add to gains earlier in the week.

Tesla shares edge higher and Super Micro Computer dips after both stocks posted sharp gains on Tuesday, while MicroStrategy follows Bitcoin’s price lower.

Discover how Michael Saylor's MicroStrategy is betting big with a 10 billion share increase to invest in Bitcoin. Dive into the risks and stakes.

Bitcoin rose on Thursday after the digital asset’s stockpiler MicroStrategy announced a plan to issue more shares, a move that would allow it to buy even more tokens.

Bitcoin's (BTC-USD) holiday momentum came to an abrupt halt just a day after its Christmas rally, even as bitcoin accumulator MicroStrategy (NASDAQ:MSTR) disclosed plans to issue additional shares to buy even more tokens.