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Greek winning streak; Cigna spurns Anthem; Apple caves to Taylor Swift

Stocks (^GSPC) getting a boost today on indications that a deal may be in the works between Greece and its creditors.

Yahoo Finance Senior Columnist Michael Santoli says investors are seeing the glass half full at this point.

"The markets are looking at the bright side that a deal looks more probable right now," he notes. "I do think it makes a little bit of sense to have a relief rally in Europe.  All European markets are down about 7% from the April high -- that's a pretty decent haircut."

But he still doesn't think what happens with Greece will have a major impact here in the U.S.

"It's a much more loosely-linked situation," he explains. "I don't necessarily think we're going to go up and away if we get a Greek deal.  And you have to wait to see how the markets react after you actually have some news as opposed to anticipating it based on rumor."

Related: Traders buy the rumors of Greece, merger deals. Will they sell the news?

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Cigna spurns Anthem

Here’s a look at some of the stocks the Yahoo Finance team will be tracking for you today. 

Cigna (CI) shares are surging in early trading after the health insurer rejected Anthem's (ANTM) latest takeover offer of $48 billion or $184 a share, saying the offer is "inadequate and not in the best interest of its shareholders."  

Williams Companies (WMB) shares are soaring this morning after the natural gas pipeline company said no thanks to a $48 billion bid from Energy Transfer Equity (ETE), stating the offer "significantly" undervalued the company. But Williams said it was open to other offers and strategic alternatives. Shares of Energy Transfer Equity are also moving higher on the news. 

Related: Cigna, Williams reject buyout bids; Fitbit keeps running; Facebook faces off with YouTube

Fitbit (FIT) shares are up sharply in early trading. The wearable device maker continues to race ahead following the company's Wall Street debut last week. The stock is up more than 50% since it first started trading on the New York Stock Exchange last Thursday.

Facebook (FB) shares are higher this morning. The social media site is reportedly gaining ground on Google's (GOOGL) YouTube. Facebook is expected to deliver two-thirds as many video views as YouTube in 2015, according to research by Ampere Analysis. Facebook and YouTube  are currently neck and neck in terms of the number of monthly active users.

Related: Facebook vs. YouTube: advertising arms race

Apple's Swift change  

Apple (AAPL) music made a reversal on its royalty policy, after pop star Taylor Swift announced she would withhold her latest album from the service. Swift wrote an open letter expressing her disappointment that Apple would not pay artists during a three month trial period when people sign up for the music service. Shortly after, Apple changed course and announced plans to pay artists during the trial period.