IHH raised $2.1 billion in a share sale that confirmed Malaysia's status as Asia's current IPO capital following the strong debut last month of plantation giant Felda Global Ventures Holdings , the world's biggest IPO of 2012 after Facebook (>> Facebook Inc).

The stock opened 9.6 percent above its IPO price of 2.80 ringgit on the Malaysian stock exchange, within the expectations of analysts who had predicted a bounce despite the backdrop of tottering global equity markets and pulled listings.

Its Singapore debut also saw a 9.6 percent jump, adding some shine to the regional bourse after India's Reliance Communications (>> Reliance Communications Ltd.) shelved a planned $1 billion IPO by its undersea cable unit this month on jittery market conditions.

"We are quite happy with the start of our stock trading even though it is just under 10 percent premium. It shows a vote of confidence from investors towards us," IHH Managing Director Lim Cheok Peng told reporters in the Malaysian capital.

By 0332 GMT, Malaysian IHH shares had risen as much as 13.9 percent to 3.19 ringgit with the help of domestic funds, while shares in Singapore climbed 11.4 percent to S$1.24.

Malaysia, where the government has a heavy hand in the economy and the equity market is dominated by local investors and large domestic pension funds, has defied a gloomy trend that has seen several IPOs pulled due to a lack of investor interest.

And there are more IPOs in the pipeline. Malaysian tycoon Ananda Krishnan is expected to list the local operations of pay-TV firm Astro All Asia Networks Plc in the fourth quarter in a deal that could raise as much as $1.5 billion, while the world's largest condom maker, Karex, is considering an IPO.

Singapore, on the other hand, had to contend with motor racing firm Formula One delaying its $3 billion dollar IPO. Most recently, Ascendas Hospitality Trust had to cut a planned listing in the city state by 13 percent after being forced to exclude a South Korean hotel chased by creditors.

EXPOSED TO HEALTHCARE

IHH is the healthcare arm of Malaysia's state investor Khazanah Nasional . Based on its highest Malaysian share price of 3.19 ringgit on Wednesday, IHH has a market capitalization of 25.6 billion ringgit ($8.06 billion), making it the world's second-biggest listed healthcare provider after U.S. hospital operator HCA Holdings Inc (>> HCA Holdings Inc).

It joins the likes of Kuala Lumpur-listed KPJ Healthcare Bhd (>> KPJ Healthcare Berhad), Singapore's Raffles Medical Group (>> Raffles Medical Grou), Bangkok Dusit Medical Services (>> Bangkok Dusit Medical Services PCL) and India's Fortis Healthcare (>> Fortis Healthcare Ltd) as key medical services stocks.

The stock is set to lead investor exposure into a region where rising incomes and a growing middle class in China, India and Southeast Asia are boosting demand for better medical services.

"Given IHH's size, I won't be surprised to see them incorporated as a component of the STI (Straits Times Index), so some funds may be taking positions first," said Ng Kian Teck, lead analyst at Singapore-based SIAS Research.

"There are not many healthcare plays here, especially of IHH's size but valuations are not cheap."

IHH, which counts Japan's Mitsui & Co (>> Mitsui & Co.) and Dubai-based Albraaj Capital as shareholders along with Khazanah, has expanded rapidly in the past few years and now employs 24,000 people in 30 hospitals as well as medical centers and clinics.

It added Turkish hospital group Acibadem AS (>> Acibadem Saglik Hizmetleri ve Ticaret AS), Singapore's Parkway Holdings and India's Apollo Hospitals Enterprise Ltd (>> Apollo Hospitals Enterprise Limited) to its local holdings Pantai Hospitals and International Medical University.

MIXED VIEWS

Analysts' views are mixed on IHH's earnings growth outlook, with some saying it could struggle to achieve synergies from its large, complex operations extending from Malaysia and Singapore to Turkey.

In contrast, TA Research said IHH's strong earnings growth outlook and favorable geographic diversification warrants the IPO price that values it at a 20 percent premium to its peers.

At 2.80 ringgit a share, IHH trades at a historical price-to-earnings ratio (PER) of nearly 60 times, and 46 times forward PER based on Public Investment Bank's estimate of earnings per share of 6.1 sen for 2013.

IHH's Lim said the firm was working towards a unified vision for its Turkish and Southeast Asian units and left the door open for dividends.

"We do not have any dividend policy at this point, it depends on the cash flow. If we do not need to spend on capex and expansion and have excess cash, we will return the money back to the shareholders," he said.

IHH's IPO consisted of 2.23 billion shares with an over-allotment option of up to 170 million shares, putting the total offering at $2.1 billion.

The institutional component of the offer was oversubscribed by more than 100 times. Despite strong demand, the IPO was priced slightly below the top of a 2.67-2.85 ringgit range to "leave something on the table", one source involved in the deal said.

Nearly two-thirds of the shares were taken by big "cornerstone" investors including sovereign wealth fund Kuwait Investment Authority and International Finance Corp , the private investment arm of the World Bank.

Bank of America-Merrill Lynch (>> Bank of America Corp), CIMB (>> CIMB Group Holdings Bhd) and Deutsche Bank (>> Deutsche Bank AG) are the lead global coordinators for the listing, with Credit Suisse , DBS (>> DBS Group Holdings), Goldman Sachs (>> Goldman Sachs Group, Inc.) and Maybank (>> Malayan Banking Berhad) acting as joint bookrunners. ($1 = 3.1780 Malaysian ringgit)

(Additional reporting by Niluksi Koswanage; Editing by Alex Richardson)

By Yantoultra Ngui and Charmian Kok