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on November 4, 2011. On May 18, 2012 Facebook had its IPO. Twitter’s IPO took place on
November 7, 2013. These IPOs occurred at least two and a half years after the stock market
had bottomed during the global financial crisis, when the S&P 500 fell to 683. In November,
2011, the S&P had almost doubled in value to 1253, increased to 1353 in May 2012, and to
1804 in November 2013.
5. The chapter states that when sentiment rises, investors increase the riskiness of their
portfolios by holding a higher proportion of stocks and by shifting into more speculative
stocks. The primary example of a speculative stock is a company that is young, currently
unprofitable but potentially very profitable, has no earnings history and a highly uncertain
future. Twitter qualifies on all counts. Speculative stocks are difficult to value, likely to
Conversely, when investors are excessively pessimistic, stocks with high and positive
sentiment betas tend to be undervalued, leading their subsequent returns to be superior.