Group 1 - The article discusses various options trading strategies, emphasizing their flexibility and complexity, and introduces four basic investment strategies, simple spread trading, typical volatility trading strategies, and hedging strategies [1] - Volatility (Vol) is defined as the degree of price fluctuation of an asset, serving as a measure of uncertainty in asset returns and reflecting the risk level of the asset [3][4] - High Vol leads to greater price fluctuations and uncertainty in returns, resulting in higher theoretical prices for options. Conversely, low Vol results in lower option prices [4] Group 2 - Historical volatility is calculated using past price data and reflects the asset's price fluctuation over a specified period, serving as a basis for analyzing and predicting other types of volatility [4][6] - Implied volatility (IV) is derived from the actual price of options and reflects the market's expectations of future volatility, with a declining IV indicating a potential decrease in option prices [7] - When uncertain about market direction, various option strategies can be employed, including bullish strategies that anticipate price increases [9] Group 3 - Buying call options allows investors to gain the right to purchase an asset at a predetermined price, with potential unlimited profit if the market price rises, while limiting losses to the premium paid [12][13] - Selling put options involves receiving a premium with the obligation to fulfill the contract if exercised, suitable when the market is expected to remain stable or rise, with maximum profit being the premium received [14][16] - Investors should consider market trends, volatility, and time value when selecting option strategies, and should implement stop-loss and take-profit measures to manage risk and enhance potential returns [16]