พวกคุณปรับขนาดสถานะในสินทรัพย์ที่มีความสัมพันธ์กันอย่างไร?

You hit on the main point: if you're long SPX, you're already long AAPL/MSFT to some extent. Sizing down those individual tech names is the most straightforward approach to avoid over-concentration. Thinking about beta-adjusted exposure for the individual tech stocks against your SPX position can also help refine the sizing.

You hit on the main point: you have to size down the individual tech longs, or recognize that your effective SPX exposure is higher than just the index position itself. There's no magic bullet; it's about understanding the underlying beta and adjusting your total notional to stay within your risk tolerance for that sector.