We construct a new seo pricing model based on bs formula in the article . this model thinks much of trend of marketing price compare with other models . ' . it reflects the investor ' s estimate of companies - exchanged achievement and prospective income of this item 本文基于bs期权定价公式提出了一个增发新股定价的新模型， j该定价模型与其他模型相比，更加重视二级市场股价的走势。
