You Won't See Marissa Mayer Or Nikesh Arora At Allen & Co.'s Annual Sun Valley Conference

Allen & Co, a boutique investment bank firm with a focus on media and entertainment companies, hosts an annual shindig for the "who's who" of the industry.

Last year's event at Idaho's Sun Valley Resort attracted more than 300 executives in the media, finance, politics and technology spaces.

According to Forbes, the conference "has been known to foster major company mergers and acquisitions." Unfortunately, investors hoping Yahoo! Inc. YHOO's CEO Marissa Mayer can close a deal and sell its core Internet properties once and for all will be disappointed.

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The New York Post stated that Mayer won't return this year as a guest, as she wasn't extended an invite by the organizers.

Yahoo has been in talks to sell its core Internet properties to Verizon Communications Inc. VZ. Both the company's CEO Lowell McAdam and head of its AOL unit Tim Armstrong are expected to attend the event.

Quicken loans owner Dan Gilbert is another name that has shown interest in Yahoo's properties. He will be attending the event along with Warren Buffett, who said he will team up with Gilbert and provide financing.

Final bids for Yahoo's properties are now due on July 18, but this date could be pushed back even further.