股票是股份公司在筹集资本时向出资人公开或私下发行的、用以证明出资人的股本身份和权利，并根据持有人所持有的股份数享有权益和承担义务的凭证。-The stock is a stock company to raise capital to the investor public or private issue, to prove the identity and rights of the investor' s share capital, in accordance with the interests and obligations of holders entitled to the shares held by the number of certificates.