Traders work on the floor of the New York Stock Exchange.

Friday saw a strong, broad rally that for the most part has held its early-morning gains. Four stocks advanced for every one declining; eight of the 10 S&P 500 sectors rose more than 1 percent.

Why are bond yields down today and not continuing the rally we saw all week? It goes back to that "Goldilocks" idea, just strong enough to indicate that the job market is back on track, but not so strong to scare anyone into thinking that June is the likely month for the Fed to hike rates.