MicroStrategy Inc shares tumbled after Andrew Left’s Citron Research said in a post on X that it’s betting against the software company, which has effectively transformed itself into a Bitcoin investment fund.

Citron Research has taken a short position in MicroStrategy , the company said in a post on social media platform X on Thursday.

Citron said it had hedged its perspective with a short position against MicroStrategy, even though it maintained a positive outlook on BTC. Supported by robust investor attitude toward BTC markets, MicroStrategy shares remain up 78% from Election Day and have gained 529% YTD despite Thursday's selloff.