Which of the following statements contradicts the semi-strong form efficient market hypothesis?

		After a private meeting with a potential acquirer and before the takeover announcement was made, the CEO of the target firm purchased stocks in his own company and made abnormal profits.
		Mary has not been able to earn positive alphas for years from buying stocks that received positive earnings surprises. Her strategy has been to purchase these stocks one day after the earnings announcement date.
		Mike has been making positive alphas for the last 10 years from investing in small stocks.
		None of the provided statements.