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套利 - taoli
指从纠正市场价格或收益率的异常状况中获利的行动。异常状况通常是指同一产品在不同市场的价格出现显着差异，套利即低买高卖，导致价格回归均衡水平的行为。套利通常涉及在某一市场或金融工具上建立头寸，然后在另一市场或金融工具上建立与先前头寸相抵消的头寸。在价格回归均衡水平后，所有头寸即可结清以了结获利。套利者(arbitrageur)指从事套利的个人或机构。
Arbitrage
The action of profiting from the correction of price or yield anomalies in markets. Often this will involve taking a position in one market or instrument and an offsetting position in another. As prices or yields move back into line, all positions may be profitably closed out. An arbitrageur is an individual or institution practising arbitrage.
