Knight Capital's $390 million loss this most recent quarter is pretty bad news and stems from an accounting charge related to a bailout package, as well as s pre-tax $461 million hit when the company's trading system melted down in August.

While this loss certainly is painful for shareholders, in the long term the company looks as if it may be all right.

Of course, market-making has been under pressure recently, so all investors need to take a step back and re-evaluate their positions a bit.

See more in the following video.