lowest price; bottom price
Used in stock, commodity, and market contexts to refer to the lowest price reached during a given period or the lowest price at which something is offered.
今日の下値は昨日より高かった。
Today's lowest price was higher than yesterday's.
The stock price developed into a test of its lower support level.
この銘柄の下値はそろそろ限界だろう。
The bottom price for this stock is probably near its limit.
この銘柄は下値が固く、大きく下がる心配は少ない。
This stock has firm downside support, so there's little risk of a big drop.
The market fell below the expected support level.
高値 is the highest price reached in a market, the opposite extreme from 下値's lowest price.
上値 refers to an anticipated or resistance-level high price in trading, the direct counterpart to 下値's anticipated low price.
lower support level; lower support line
Compound of 下 (した, 'lower') and 値 (ね, 'price'). The reading ね for 値 is a native Japanese reading (kun'yomi).