What #TwitterIPO says about stocks may be a bunch of bulls

Chris Ratcliffe | Bloomberg | Getty Images

There are many warning signs that the stock market is getting top heavy, but the Twitter IPO may not be one of them.

Twitter prices Wednesday afternoon in a week that has 16 scheduled (Initial Public Offerings) IPOs, the most in any week since 2006, according to Renaissance Capital. Last month's 30 initial offerings made it the best October since 2004, and Renaissance says 2013 is on track to be the best year since 2000.

(Read more: Twitter's three founders reunite for IPO road show pitch)

"Twitter's the most well-known of the IPOs, but the IPO calendar is more important," said Art Hogan of Lazard Capital. "We just had the best month for IPOs since 2007, and the pace continues. What that speaks to is the market can sustain the supply of stock that is coming in. Companies that have been thinking about going public have decided to because the market conditions are favorable. People look at that as a bad sign, but that's not so."