Nvidia surge births big short bets

The parabolic surge in Nvidia shares began when the group stunned Wall Street with a revenue forecast that exceeded analysts' forecasts by as much as 75%.

But it is now starting to show cracks in its exterior.

Nvidia shares are the third-most-shorted stock on the market, according to recent data from S3 Partners, with some $18.3 billion in bets against it.

That compares with around $20.17 billion in short interest on Microsoft $Microsoft (MSFT.US)$ and $18.72 billion on Apple $Apple (AAPL.US)$ . Nvidia's short interest even exceeds that of Tesla , which is pegged at $17.01 billion, even though the electric-vehicle stock has fallen more than 30% so far this year. $Tesla (TSLA.US)$