The bear and the bull are animals used to symbolize the mood of the stock market. When it is a bull market, prices are going up and traders are optimistic. When it is a bear market, prices are falling and few people want to buy, which makes prices fall even further.

株式市場の状態を表す言葉として、動物の熊と雄牛が使われます。Bull market(上げ相場)では、株価が上がりトレーダーも楽観的になります。Bear market(下げ相場)では、株価が下がり、誰も買いたがらないのでさらに下落します。