We'll come back to this, but beta of the stock is a measure of how much it moves with the market and the alpha of a stock is how much it outperforms the market.

回到原先的话题,beta用以衡量,本公司跟随市场变化的程度,alpha衡量超过市场的表现

耶鲁公开课 - 金融市场课程节选

Hedge fund managers struggled to generate alpha, or gains above market indices.

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Over the long run by definition and observation most alpha-seeking investors cannot beat the market averages.

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Alpha is what they call the above-market gains you can get by selecting the right stocks.

FORBES: Wealth Blossoms Not By Beating The Market But Joining It