That's an odd way of using inflation numbers. 8% is a YoY change. What makes you able to sum that up with a 3-month metric of SPX to yield anything useful? It'

That's an odd way of using inflation numbers. 8% is a YoY change. What makes you able to sum that up with a 3-month metric of SPX to yield anything useful? It's 0.6% and 0.8% MoM so far [1], so if we're simply summing up an approximation for YTD and extrapolating to March, I'd suggest -(7% + 0.6% + 0.8% + 0.8%) for -9%. [1] https://tradingeconomics.com/united-states/inflation-rate-mom https://tradingeconomics.com/united-states/inflation-rate-mo...