Stock price when the opinion was issued
He did a put spread on May 2, the 500-520 end of July put spread. He wasn't concerned about NVDA or tech, but to the market's reaction broadly to Nividia's earnings. Rally broadening in the S&P had not happened. You're limiting your downside with a spread. He bought back the 500 put, which leads him long only the 599 outs.
SPY is the oldest and the biggest. Buy more, hold forever. Starting to be overtaken by VOO, perhaps because of the slight difference in MER cost. Worthwhile contacting the ETF company itself for a tax opinion on which account is best to hold it in.