市场形态周报（20250324-20250328）：本周指数普遍下跌-2025-03-30

• The report utilizes the Heston model to calculate the implied volatility of near-month at-the-money options, which serves as the market's fear index. Implied volatility reflects market participants' expectations of future volatility[7] - The broad-based timing strategy signals are based on the shape analysis of indices. For example, the Shanghai 50 index shows a bullish signal, while other broad-based indices remain neutral. The strategy's annualized return for the Shanghai 50 index is 11.84%, with a maximum drawdown of -20.2%[12][14] - The industry timing strategy is constructed using the long-short ratio scissors difference of industry index constituent stocks. If no bullish or bearish signals are present on a given day, the scissors difference and its ratio are set to zero. This model outperforms its respective industry indices in all cases, demonstrating excellent historical backtesting performance[15] - The special bullish shape signals are derived from six technical patterns: Golden Needle Bottom, Rocket Launch, Full Red, Hanging Line, Paradise Line, and Dark Cloud Line. Among these, Golden Needle Bottom, Rocket Launch, and Full Red exhibit strong positive predictive effects. Specific stocks with these signals include Shenzhen Energy, Pailin Biotech, and others[20][21][22] - The brokerage golden stock shape signals combine fundamental analysis with shape analysis. Stocks recommended by brokerages are monitored for shape-based buy signals, and a portfolio is constructed by buying on the second trading day after the signal appears. This approach significantly improves portfolio returns and reduces maximum drawdowns. Stocks with a 70% bullish signal success rate this week include Lens Technology and Haitian Precision[28][29][33]