SAN FRANCISCO (Reuters) - Shares in iRobot Corp jumped 23 percent to a record high on Wednesday after the Roomba robotic vacuum maker posted better-than-expected quarterly results and said it was buying its largest European distributor.

(This July 24 story corrects paragraph 6 to read "share maps for free with customer consent" instead of "sell maps")

Billionaire Howard Marks, who’s warned of excessive risk in the markets for the past five years, is now sounding the alarm as hazards from red-hot tech stocks to investor confidence in SoftBank’s $100 billion fund converge.

iRobot’s chief executive says company could share or sell maps of robot vacuum users’ homes to US tech firms as part of smart home and profit push

Grab raised $2 billion from Didi Chuxing and SoftBank Group Corp. in the largest–ever venture fundraising in Southeast Asia, joining forces with two companies instrumental in driving Uber Technologies Inc. out of China.

Slack Technologies Inc. is raising about $250 million in a funding round co-led by SoftBank Group Corp., according to people familiar with the matter, as the Japanese investment firm helps drive a new venture capital boom.