下面2句话如何理解?bulls could find some support as corporations 是说的以

下面2句话如何理解?bulls could find some support as corporations 是说的以公司的身份吗?
1.It is a tossup whether the market found a bottom this week,but bulls could find
some support as corporations,mostly on the sidelines as the market tumbled,
step up their stock purchases in the coming weeks.
2.On Thursday,605 New York Stock Exchange issues hit 52-week lows,the most for a
single day in three years,while just 21 hit 52-week highs.The number of lows
fell to 153 on Friday.