heavy trading
noun[U]
STOCK MARKETukusaperiodoftimeduring which a lot ofshares,bonds, etc. areboughtandsold:
Itsstockpricefell24centsto $7.61inheavytradingThursday.
heavy trading in sthDealersreportedfurtherheavytradingin theshares.
heavy trading on sthSharepricesrose$2.635 inheavytradingon the Nasdaq.