Enter multiple symbols separated by commas

Beware, Nasdaq Buyers: You're Getting Apple

New highs for QQQQ, but watch out: you're buying Apple.

One of the most popular ETFs, the PowerShares QQQ Trust, or "QQQQ," which tracks the Nasdaq 100, is at the highest levels since January 2008.

That's the good news.

Here's the bad news: it is being badly distorted by Apple .

The stock is up 43 percent year to date, but it has a 20 percent weighting in the Nasdaq 100...far and away the largest weighting of any stock. More importantly, it accounts for two-thirds of the gains in the Nasdaq 100 this year.

Other Top Nasdaq Stocks:





Bookmark CNBC Data Pages:



Questions? Comments? tradertalk@cnbc.com

  • Bob Pisani

    A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.

Wall Street

  • Robert Shiller

    Nobel Prize-winning economist Robert Shiller says that his key valuation indicator is flashing warning signs.

  • Lael Brainard

    The Fed is in the early stages of an analysis on changes in bond market liquidity, amid signs that liquidity may be less resilient than in past.

  • Bill Gross

    Janus Capital acquired a majority interest in Kapstream Capital and said Kapstream's Palghat will support Bill Gross as co-portfolio manager of the Janus Global Unconstrained Bond strategy.