(Adds XIO Group, Sberbank)
May 24 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2100 GMT on Friday:
** China's financial regulators said the country's banking and insurance regulator will assume control of Inner Mongolia-based Baoshang Bank due to the serious credit risks that it poses, in a rare takeover of a domestic lender.
** TPG Telecom has filed a case with an Australian court challenging the anti-trust regulator's move to block its about $10 billion merger with Vodafone's local joint venture.
** The SFM UK Management fund linked to investor George Soros has built a 3% stake in Swiss asset manager GAM Holding , a filing on the SIX Swiss Exchange's website showed.
** European private equity firm Charterhouse said it had made a cash bid for Tarsus valuing the London-listed media firm at about 561 million pounds ($711 million).
** XIO Group, the China-backed private equity firm which owns J.D. Power, is exploring a sale of the U.S. customer survey and car ratings company that could value it at close to $1.9 billion, including debt, people familiar with the matter said.
** Global Payments Inc has held preliminary tie-up talks with Total System Services Inc, Bloomberg reported, citing people familiar with the matter.
** Brazil's Grupo SBF SA, owner of sporting goods retailer Centauro, has submitted a counteroffer of $2.80 per share to acquire online shoe retailer Netshoes Ltd, the company said in a filing.
** Pennsylvania's Public Utility Commission approved T-Mobile US Inc's $26 billion purchase of rival Sprint Corp, bringing the mega-merger one step closer to completion.
** Russia's largest lender Sberbank is in talks with potential investors to sell the Antipinsky oil refinery in Siberia, CEO German Gref said, adding that he expected a sale in the near future. (Compiled by Aakash Jagadeesh Babu in Bengaluru)