Final answer:
The efficient market hypothesis suggests that the expected price for today is approximately $136.36.
Step-by-step explanation:
The efficient market hypothesis suggests that the price of a stock should reflect all available information and expectations about the future. In this case, the expected stock price in one year is $150. With a required return of 10%, we can use the formula for present value to calculate the expected price for today.
P0 = P1 / (1 + r)
where P0 is the expected price today and P1 is the expected price in one year. Plugging in the values, we get:
P0 = $150 / (1 + 0.10) = $136.36
Therefore, according to the efficient market hypothesis, the expected price for today is approximately $136.36.