** Shares of cryptocurrency and blockchain-related companies fall premarket, as Bitcoin falls below $100,000
** Bitcoin BTC=, the world's biggest cryptocurrency, down about 6.3% to $98,547, while Ether ETH= falls 8.4% to $3050
** Crypto exchange Coinbase Global COIN.O falls 6.9%, while Blockchain farm operator Bitfarms Ltd BITF.O down about 4%
** Crypto miners: Riot Platforms Inc RIOT.O, MARA Holdings MARA.O, U.S.-listed shares of Hut 8 HUT.O, and Bit Digital BTBT.O down between 9.7% to 6.4%
** BTC buyer MicroStrategy MSTR.O declines 6.7%
** Canaan Inc CAN.O down 5.3%
** ProShares Bitcoin Strategy ETF BITO.O falls 5.9%
** U.S. President Donald Trump signed executive order last week creating a new working group to draw up crypto regulations, and explore the creation of a U.S. cryptocurrency stockpile
** Crypto markets have soared since Trump's election on hopes for more favourable regulations
** BTC gained 120% in 2024
(Reporting by Sanchayaita Roy in Bengaluru)
((Sanchayaita.roy@thomsonreuters.com))