trading halt
... that a trading halt stops stock trading in the U.S. when there is significant order imbalance between buyers and sellers in a security?
... that a <b id="mwEGc"><a href="./Trading_halt" id="mwEGg" rel="mw:WikiLink" title="Trading halt">trading halt</a></b> stops <a href="./Stock_trader" id="mwEGk" rel="mw:WikiLink" title="Stock trader">stock trading</a> in the U.S. when there is significant order imbalance between buyers and sellers in a <a href="./Security_(finance)" id="mwEGo" rel="mw:WikiLink" title="Security (finance)">security</a>?