* Analysts expect Q4 profit of 156 bln yen, up 1 pct y/y
* Comes as some Vision Fund portfolio firms prepare for IPOs
* SoftBank mulling IPO of $100 bln Vision Fund -source
* SoftBank's shares rose as much as 4 pct (Adds stock reaction, analyst comment)
By Sam Nussey
TOKYO, May 7 (Reuters) - Japan's SoftBank Group Corp is expected to report a small rise in its fourth-quarter profit, while investors look for details on whether the conglomerate plans to monetise its almost $100 billion Vision Fund through an IPO.
SoftBank is considering taking the Saudi-backed investment fund public, a source said on Friday, adding that no formal process has been started.
Shares of the group rose as much as 4 percent on Monday as trading resumed after Japan's extended "Golden Week" holidays.
Following the listing of the group's domestic telco SoftBank Corp in December, the Vision Fund is the largest segment in SoftBank's earnings without a market valuation.
It is, however, unclear how the world's largest technology investment fund could be listed in its current form.
SoftBank is expected to post on Thursday a 1 percent rise in operating profit to 156 billion yen ($1.41 billion) for the three months ended March, an average estimate of three analysts polled by Refinitiv shows. SoftBank has not provided a forecast and moved to new accounting standards this financial year.
The results come at a potential inflection point for the group and the Vision Fund as portfolio companies like Uber Technologies and the owner of WeWork, The We Company, prepare to list, putting a price tag on some of the conglomerate's largest bets on unlisted startups.
With investors struggling to quantify Vision Fund's growing investments amid a lack of clarity over its valuation methods, analysts think the listings could help underscore its strategy.
Given the group's focus on technology companies, "if something happens to that sector it could be very negative", said Dan Baker, an analyst at Morningstar.
Uber is set to price its $10 billion IPO on May 9, seeking a valuation of up to $90 billion. That is lower than what Uber insiders had hoped for, but investors have reported strong demand for the shares.
The lower valuation comes after rival Lyft Inc's poor stock performance after its market debut. That reflects investor scepticism over Lyft's path to profitability, with peers likes Uber and WeWork also heavily losing money.
In China, Sequoia Capital China, viewed as a bellwether for tech investment, is set to lay off as much as 20 percent of investment staff as a slowdown in the tech sector saps appetite for risk, two people have said.
While the Vision Fund has previously profitably exited its stakes in Indian online retailer FlipKart, which it sold to Walmart, and in already-public chipmaker Nvidia Corp , Uber will be its first portfolio company to go public.
SoftBank's rapidly growing investments continue to cause investor headaches in valuing the business, while also raising concerns about returns and SoftBank's indebtedness.
Last week, a newly created Latin America-focused fund under SoftBank Group COO Marcelo Claure made its first move after SoftBank announced a $1 billion investment in Colombian delivery app Rappi.
SoftBank Group's domestic telco reports its financial results a day ahead of its parent. Three analysts on average see a weak end to SoftBank Corp's year, with operating profit set to fall 11 percent to 94 billion yen.
While the telco hopes a series of joint ventures with SoftBank portfolio companies will help drive growth, pressure on carrier fees have left many investors in wait-and-see mode.
Sprint Corp, a SoftBank unit, and T-Mobile US Inc last month extended the deadline for completing their $26 billion merger, as regulators have yet to decide whether to approve the transaction announced a year ago.
SoftBank Group's shares have risen 60 percent this year, but the telco's shares are down 5 percent and languish 14 percent below their December 1,500 yen IPO price.
SoftBank Group's shares were up 0.9 percent at 1300 local time (0400 GMT), while SoftBank Corp's shares down 1.3 percent in line with the broader market. ($1 = 110.7400 yen)
Reporting by Sam Nussey; Editing by Miyoung Kim and Himani Sarkar