S&P500 in complete control of FED - How long can it last?

Looking at the past 10 months of S&P500 growth there are certain aspects that are quite obvious. The S&P500 index is rising about 15-80 days and then it quickly crashes in 3-7 days time for about 50% of the value it has grown. Looking at the macro data this does not make sense, since inflation is rising. The costs of products, logistics, salaries and inventory rotation is rising. So margins are affected and therefore the future profits.