pre-market
adjective
ukus(also pre-open)relating to the buying and selling of shares before the stock market opens:
In pre-market trading, the shares tumbled 10p to 98.5p.
Electronic communication networks, or ECNs, handled trades during the pre-market hours until 10:30 a.m. Eastern time.
Shares closed at $38.25 Thursday on Nasdaq and in pre-open trading Friday fell about $3.