Some stocks, who may be viewed as exceptionally risky, may not be eligible for margin purchase; the broker will not lend out funds to purchase those securities. (wikinvest.com)
While margin purchases typically involve adding leverage to go long on an asset, it's also possible to go short by selling bitcoins on margin, and then closing out the position later on. (fortune.com)
Uber's success can be partly attributed to repetitive high margin purchases. (jungleworks.co)