XLI: An Object Lesson In Why Long-Term Investors Shouldn't React To Every Short-Term Move

When something falls by 2% one day and rallies by 2% the next, it’s not completely back to where it was. A $100 stock that falls 2% is now worth $98. If that stock then rallies 2%, it’s worth $99.90. With that said, look at what the XLI ETF just did.