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Options, the English term for '期权'. It aims to increase personal profits based on the principle of leverage. Simply put, it's about risking a small amount to gain big.
Unusual options activity, the English term for '期权异动'. Unusual options activity refers to a large volume of trades occurring within a short period, leading to a significant surge or drop in options/stocks. Unlike stocks, all options trades are publicly disclosed and displayed on the options chain. By observing unusual options activity on the options chain, we can determine the potential surge/drop in stocks.
Since the majority of unusual options activity is driven by institutions, who possess sufficient information, thorough research, and substantial funds to make purchases, basing stock price predictions on the direction of unusual options activity can be somewhat helpful.
These anomalies occur within a very short timeframe. By tracking/following unusual options activity, it provides us with a reference for potential 'surges/drops' in the stock market.