(Adds Autolus, Banco; Updates Advent)
Sept 16 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2030 GMT on Monday:
** Japan's SoftBank Group Corp has raised its stake in Banco Inter SA to 14.94% from 8.10%, according to a document filed by the Brazilian lender, deepening the conglomerate's push to challenge Brazil's concentrated banking sector.
** Investment group PPF, controlled by the Czech Republic's richest man Petr Kellner, has acquired a 19.2% stake in biopharmaceutical firm Autolus Therapeutics, it said, making it the company's biggest shareholder.
** Vivint Smart Home Inc, a home automation company backed by Blackstone Group, agreed to merge with a company funded by a unit of Japan's SoftBank Corp to create a firm with an enterprise value of $5.6 billion.
** Oil and gas pipeline company Energy Transfer LP said it would buy smaller rival SemGroup Corp for $1.35 billion and build a 75-mile oil pipeline to strengthen its oil transportation, terminalling and export operations.
** London Stock Exchange Group shareholder Royal London Asset Management said it backed the board's decision to reject a 32 billion pounds ($39.8 billion) offer from Hong Kong Exchanges and Clearing (HKEX).
** Staff representatives at bankrupt French airline Aigle Azur have asked for more time to discuss a takeover by Air France-KLM at a court hearing, as the field of potential buyers narrowed, the CFDT union said.
** Talks to sell Metro's loss-making Real hypermarket chain to real estate investor Redos could take longer than expected after other parties showed interest in the properties, the German wholesaler said.
** Austrian sensor specialist AMS is actively buying Osram shares and currently holds a stake of almost 3% in the German lighting group, its chief executive said.
** U.S. private equity firm Advent International won its battle to buy Britain's Cobham for $5 billion, taking advantage of the weak pound to pounce on the defence and aerospace group that pioneered air-to-air refuelling.
** Insolvent German wind turbine manufacturer Senvion agreed on exclusive talks with Siemens Gamesa over the sale of a substantial part of its business.
** Denmark's Lundbeck has agreed to buy Alder BioPharmaceuticals in a deal valued at almost $2 billion, hoping to reap profits from a potential blockbuster migraine drug.
** China Mengniu Dairy Co unveiled a plan to buy infant formula maker Bellamy's Australia Ltd for A$1.43 billion ($983 million), a lifeline for a target beset by regulatory problems that sent its shares soaring.
** Allianz Global Investors, the biggest shareholder of Osram, is prepared to sell its stake to chipmaker AMS in the course of its 4.3 billion euro ($4.75 billion)takeover attempt if no better bid is made, a source said.
** Dream Global Real Estate Investment Trust DRG_u.TO said funds managed by Blackstone Group Inc BX.N would buy the Canadian firm in a C$6.2 billion ($4.69 billion) deal.
** Australia's Pacific Energy said it would back a $321.18 million takeover offer by QIC Private Capital after the investment manager matched a rival consortium's recent offer for the power supplier.
** Bellamy's Australia Ltd said China Mengniu Dairy Company Ltd will buy the formula maker for A$1.43 billion ($982.98 million).
** German health care group Fresenius has abandoned plans to sell its blood transfusion business, a spokesman said on Sunday, confirming a German media report.
** Hong Kong Exchanges and Clearing is embarking on a three-week charm offensive with London Stock Exchange investors as the Asian trading house tries to salvage its proposed $39 billion takeover offer.
** Britain's FirstGroup is pursuing potential options for the separation of its UK First Bus business, a company spokesman said on Sunday.
** Virgin Australia Holdings Ltd said it entered an agreement to buy back the 35% of its Velocity frequent flyer programme that it does not already own for A$700 million ($481 million) from private-equity group Affinity Equity Partners. (Compiled by C Nivedita and Saumya Sibi Joseph in Bengaluru)