Final answer:
According to the efficient market hypothesis, taking into account the revised forecast for next year's price of $130 and the $20 dividend, the expected price today with a 10% required return for a share of Kroger would be $136.36, which is option B.
Step-by-step explanation:
The efficient market hypothesis suggests that all available information is already factored into the stock price. Since the share price of Kroger was $100 yesterday and there's an announcement after market close that revises the forecast for next year's price to $130, plus a dividend payment of $20, we can calculate the expected price today based on the 10% required return. The calculation is the sum of next year's forecast price and the dividend, divided by 1 plus the required return.
To find the expected price today, we use the formula:
Price today = (Next year's forecast price + Dividend) / (1 + Required return)
Substituting the numbers we get:
Price today = ($130 + $20) / (1 + 0.10)
Price today = $150 / 1.10
Price today = $136.36
Therefore, according to the efficient market hypothesis, the price today will be option B. $136.36.