AllThingsDigital, the Silicon Valley technology, analysis and opinion site, may split with Wall Street Journal owner Dow Jones & Co. with the December 31 expiration of the partnership contract.

all things dThe site's co-executive editors Walt Mossberg, tech media guru, and Kara Swisher, Vanity Fair contributor, have retained Code Advisors to scout for outside investments.

Fortune reports that any deal would top the $25M that AOL paid to acquire ATD rival TechCrunch.

Bloomberg, Conde Nast and Washington Post Co., which is in the process of being acquired by Amazon founder Jeff Bezos, have reportedly been approached.

Mossberg's "personal technology" column has run in the WSJ for more than two decades. Swisher is a former reporter/columnist at the paper. Both host the "D" conferences.

Since Dow Jones owns the AllThingsD brand, Mossberg and Swisher would rename the new venture.

Swisher said in a statement to Fortune that she and Mossberg are mulling lots of ways to expand the online journalism and conference business: "There are lots of ways to do that, and we are thinking about the best way to evolve what we believe is an even bigger opportunity in the years ahead."