12. Investor sentiment captures the mood of the investing public. If investors are bearish in general, it may
be that the market is headed down in the future since investors are less likely to invest. If the sentiment
13. Taken at face value, this fact suggests that markets have become more efficient. The increasing ease
with which information is available over the Internet lends strength to this conclusion. On the other
14. It is likely the market has a better estimate of the stock price, assuming it is semistrong form efficient.
However, semistrong form efficiency only states that you cannot easily profit from publicly available
15. a. Aerotech’s stock price should rise immediately after the announcement of the positive news.
b. Only scenario (ii) indicates market efficiency. In that case, the price of the stock rises
16. False. The stock price would have adjusted before the founder’s death only if investors had perfect
forecasting ability. The 12.5 percent increase in the stock price after the founder’s death indicates that
17. The announcement should not deter investors from buying UPC’s stock. If the market is semistrong
form efficient, the stock price will have already reflected the present value of the payments that UPC
18. The market is often considered to be relatively efficient up to the semistrong form. If so, no systematic
profit can be made by trading on publicly-available information. Although illegal, the lead engineer