Comcast may have won the battle for cable operator Sky, but investors don't share the same jubilation as stocks slid to 6 percent. It was reported that investors have concerns over the $39 billion price tag of the deal-especially as they think it was a bit overpriced.

In a financial battle of the networks, Comcast emerged the victor by submitting a $39 billion bid for the right to own the majority of Sky. News AU reported 21st Century Fox as the company on the other end, offering 10 percent lower than Comcast's winning amount. Disney was in the mix as well as the parent company of Fox as it stood ready to absorb Sky through Fox's acquisition-but it never happened.

Investor non-confidence has brought Comcast's shares to as low as 8.3 percent at the opening of the stock exchange on Monday. Disney appeared not to be affected, however, buoyed by its acquisition of Fox; it was enough to bring their shares up to 1.85 percent, or somewhere in the amount of $112.77 per share.

The fear of the investors wasn't unfounded. Critics from various channels have been pointing out that Comcast may have "overpaid" on the bid is presented. They also pointed out fears that Sky may eventually turn out to be an "albatross," or a burden, for Comcast. This was also relayed in Variety's report by Craig Moffett, a Wall Street analyst.

Comcast, for its part, explained its insistence on buying out Sky's shares. Sky currently has 23 million people subscribed to its pay TV service. These people hailed from different places in Austria, Germany, Italy, Ireland, and the UK. With all of these outlets, Comcast said it is well on its way to becoming a global cable provider that will enable it to perform on par with online content providers such as Netflix.

This, however, appears that it wouldn't win over investors with the analysis that Sky has been, first and foremost, a satellite TV provider. The investors are worried that this obsolete service won't help Comcast's bid to diversify. They also fear that Comcast may have bought something that won't even help it compete with Netflix and other wireless content providers on the Web.

To pay off their debt, Sky will incur new debt. This will not help with its balance sheet and its existing "debt-to-EBITDA" ratio, which is already around 3.6X as Moody has investigated.