Mitch I am impressed with your wealth! Congratulations! If you lost $108,000 in Apple stock alone that means you had a position worth approximately $2,443,000 value at start of day. Apple was down 4.42% today.
If at close you lost $400,000 total, that means an additional loss of $292,000 in your remaining investments. Assuming your assets beyond your Apple stock is all invested in something similar to the SP500, that calculates out to approximately another $27,037,000 invested at start of day. SP500 was down 1.08% today.
With a net worth approaching $30,000,000 you have won the game. Most people with that kind of assets would not be entirely in the market. You have some big cahones. I tip my hat to your success.
I don't have near as much invested as you and I am only about 60/40 stocks/bonds but I will sleep fine tonite.