Stocks have reversed course to trade at session highs with less than one hour until the closing bell. Bonds continue to sell off, with the 30-year yield above a key level.

The S&P 500 was up 0.4% while the tech-heavy Nasdaq was up 0.7%. The Dow was also in positive territory just barely. All three indexes started the day with losses.

The S&P 500's about-face isn't all that common. There have only been 10 days so far this year when the index fell at least as much as today's 0.85% low only to move back up into the green.