股、股份share

 share在商业上指股、股份，为可数名词：any of the units of equal value into which a company is divided and sold to raise money. People who own shares receive part of the company's profits.
stocks and share股份
a share certificate股票
Shares rise after former GE executive Nardelli leaves Home Depot Inc.

说市场占有率也常常用用share一词:
Toyota secures 15.4% share of market,only trailing GM,Ford.
这里的secure也值得一说，作为形容词翻译为无忧虑的、安全的，其名次形式为security: the UN Security Council. 在这里作为动词指得到:get something (sometimes with difficulty).
At the student union election,she secured 200 votes.
The delegation has secured the promise of a ceasefire.