plus we will have reaction from kevin warsh.ding out the month of may with a choppy session. finance professor jeremy siegel will join us to talk about what investors can expect this month in june. let's take a look at the premarket winners and losers in the s&p 500. salesforce is leading the way today, now up more than 9% "squawk box" will be right back. >>> time now for today's aflac trivia question. what was the median meriho pce in 2021? the answer when cnbc "squawk box" continues paul is about to suffer a shelf-inflicted injury. luckily, aflac will help cover his unexpected medical bills. aflac! maybe you could use the money to buy a step stool. i have a step stool. so why are you climbing a shelf? the stool's on top of the shelf, isn't it paul... (shelf crashing) yeah... ♪ ♪ aflac! only at vanguard, you're more than just an investor you're an owner. that means that your goals are ours too. and vanguard retirement tools and advice can help you get there. that's the value of ownership. >>> now the answer to today's aflac tri