On the bull market's ninth birthday, here's how it stacks up against history
• The Dow has quadrupled during the bull market, which turned 9 on Friday.

• This is the biggest and longest bull market for the Dow post-WWII, according to Leuthold Group.

The bullish run in the Dow Jones industrial average — which celebrates its ninth birthday Friday — is the longest ever and the greatest percentage gain since World War II, according to Leuthold Group.

The corresponding run by the S&P 500, notes LPL Financial, is that benchmark's second-largest and second-longest bull market ever, with only the 1990s stock market run led by technology stocks in the way.

Despite a more than 10 percent correction in equities last month following a burst of bullish activity, Leuthold's Doug Ramsey doesn't think the bull is done yet.