这些加起来也不等于219492啊

生存性偏差在一定意义上是不是就是样本选择偏差？因为坏的数据已经被忽略掉了，总体中已经有数据被剔除了，这两者有什么区别呢？

生存性偏差在一定意义上是不是就是样本选择偏差？因为坏的数据已经被忽略掉了，总体中已经有数据被剔除了，这两者有什么区别呢？

视频不完整

问题一，请问这里讲的total capital= Enterprise vale=firm value是仅适用于非上市公司吗？前面讲上市公司的EV和firm value时明明说二者不相等啊！更不可能等于total capital啊！firm value和total capital之间差了个MVA吧？ 问题二，total capital= wc+fa+ia 的公式适用于上市公司吗？

Lily, CFA, is an investment manager. Lily sent an anonymous letter to securities regulators outlining various accounting irregularities at Ruddney Company last month. Lily shorted Ruddney stock for his clients shortly before he sent the letter to the regulators. Lily leaked this information to multiple sources in the media once the regulators opened an investigation. Consequently, the share price of Ruddney immediately dropped 20% when news of the investigation became public. Lily then covered the short positions and made $10 per share for his clients. short the stock cover the short positions分别是什么意思呀 Lily是怎么made $10 per share的？

In case 3, 为什么客户有short position of Wirewolf会受益呢 In case 5，为什么保证minimum trading volume可以导致reductions of commission?

为什么不选A呢

从大盘股头村调整到小盘股头寸为什么不可以直接买小盘股的股指期货？

老师你好。为什么借钱回购完股票，Equity降低了呢？那这些回购回来的股票是以什么形式在B/S中体现？