Ignore the NASDAQ Composite

Of all the major indexes, the NASDAQ is the worst. I don’t mean that the NASDAQ market is overpriced. I mean that, as an index, it’s horrible. It tells us almost nothing. An index should be an accurate reflection of what the market, or a sector, is doing. In this regard, the NASDAQ is lousy.

The NASDAQ Composite is a capitalization-weighted index of about 3,200 stocks. That sounds like a lot, but it doesn’t do the job. The problem is that the largest stocks are gigantic, while the vast majority of the stocks are puny. This is true for the market as a whole, but it’s far worse on the NASDAQ.

The seven largest stocks on the NASDAQ are (in order) Microsoft, Intel, Cisco, Amgen, Dell, Google and Oracle. Together, they make up about 25% of the index. Compounding the problem is that many of these stocks overlap. Not that they own each other’s shares, but their businesses are heavily tied to one another. Every time Dell makes a sale, Microsoft and Intel aren’t far behind. So you basically have a few highly correlated Gullivers drowning out three thousand Lilliputians. Outside of these behemoths, there are very few blue chip stocks on the NASDAQ. Of the S&P 100, just eight stocks trade on the NASDAQ.

I understand why the NASDAQ likes to tout their index. They’re proud of their exchange, and they want more business. That’s great, but I don’t see why so many investors slavishly monitor the index. It doesn’t help anyone. I’d particularly like to see the media stop giving it such a prominent place in the news.

If you want to see how the market is doing, look at the S&P 500. That’s 70% of the market. The S&P 500 is nearly five times the size of the NASDAQ Composite, even though it has one-sixth the number of stocks. The Russell 3000 is even broader. The Wilshire 5000 is broadest of all. These indexes aren’t hard to find, yet the NASDAQ is omnipresent, and it’s only about 15% of the market.

Let’s say you want to know how tech stocks are doing. Look at the S&P 500 tech index. Or trade the tech spyders. But if you want to know how well the market is doing today, the NASDAQ is about the last place to look.

Posted by on July 26th, 2005 at 2:59 pm


The information in this blog post represents my own opinions and does not contain a recommendation for any particular security or investment. I or my affiliates may hold positions or other interests in securities mentioned in the Blog, please see my Disclaimer page for my full disclaimer.