Quote from BCE:
Just noticed last night wheat has had a huge spike up here lately. Parabolic. But as you can see topped out earlier today. Was tracking it but forgot to look here the last couple of weeks and missed this.
Quote from ECTrader:
Locked only means that you can't place a higher bid (if limit up) and vice versa if limit down. trading can continue at the bid or lower until the grains close.
Quote from Buy1Sell2:
Locked means that no one will sell at any price in a limit up move and vice versa in a limit down move. Thus trading ceases otherwise it is not locked limit.