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Kass Katch: Short QQQ

Tickers in this article: AAPL CSCO QQQ
This commentary originally appeared at 9:04 a.m. EST on Feb. 14 on Real Money Pro -- for access to all of legendary hedge fund manager Doug Kass's strategies and commentaries, click here .

"What the wise man does in the beginning, the fool does in the end."

-- Warren Buffett

Last night on "Fast Money," with Mel, Dan, Guy, Karen and Joe, I raised concerns regarding the Nasdaq market, and I have taken a short position in the PowerShares QQQ (QQQ) .

Let's go to the tape .

The NBA Market -- Nothing But Apple

With apologies to the New York Knicks' Jeremy Lin , Apple (AAPL) shares have been nothing short of "Lin-tastic."

Apple's stock is a phenomenon unto itself -- it has taken over clear dominance as the largest-cap stock -- but enthusiasm has a downside.

It has now started to move in a semi-parabolic way, and it has begun to detach itself from the action of the broader markets.

Some in the media are now even projecting that Apple will become the first trillion-dollar-cap stock. The last time this happened was the forecast in early 2000 that Cisco (CSCO) , which reached a market cap of nearly $600 billion, would become the first trillion-dollar company. We all recognize that Cisco was far more overvalued back then than Apple will ever be, but it did proceed to fall 85% to an equity capitalization of less than $100 billion.

These are all warning signs, which, combined with some other factors listed below, have encouraged me to short the Nasdaq.

Technical Moorings Weakening

The Nasdaq's market's breadth has started to diminish (often a sign of a potential top), as a few (and narrowing field of) high-profile stocks seems to be responsible for most of the recent advance.

As I mentioned on "Fast Money" last night, Bob Farrell (Merrill Lynch's legendary technical analysts) has taught us all to be careful when breadth narrows and divergences develop.

On that subject, "Fast Money" panelist Dan Nathan's Risk Reversal blog had some interesting observations on the number of new highs yesterday that underscore the developing S&P 500 divergences:

This is an interesting chart. It shows the SPX vs. a composite index of new 52-week highs across all U.S. exchanges. Today's reading, with the SPX at 1351, is 183 new highs. Back in May, at the highs, the reading was 1200. In July, before we collapsed, it was above 800. This shows the lack of market breadth as we make new highs on the year and how narrow this rally is focused amongst some names like XOM and AAPL. The market would need greater breadth normally to hold these levels and make higher highs. If that doesn't happen, we may be due for a pullback. Something to keep an eye on.