S&P 500 notches first-ever close above 1900

Big round numbers like 1900 are often tough to barrel through easily..

Don Luskin, chief investment officer at TrendMacro, says the recent market weakness is history.

"Round numbers are meaningless, but it's meaningful to make all-time highs," says Luskin. "The winter correction is over. Spring has sprung. It's going to be a very good year. The sector rotation out of growth stocks that had everyone scared in April is over, and in fact has reversed itself. "