Wall Street stocks are winning — big league. But investors don’t appear to be hitting an exhaustion point, with the Nasdaq Composite Index mounting so steady and so low-key an ascent into the stratosphere that Nasdaq 6,000 is legitimately on the table.

“The Nasdaq has not seen a major new high, which is to say a breakthrough of a big round number, since way back in 2000. With [Wednesday’s] strong move up, we are getting very close to the next one, at 6,000,” Brad McMillan, chief investment officer at Commonwealth Financial Network told FN's sister publication MarketWatch.