Asian stocks fall on oil, corporate earnings concerns

Asian indices were broadly lower on Thursday, as a rout in energy stocks and a slew of disappointing corporate earnings weigh on regional markets.

Oil remained weak in Asian trading, following data that showed U.S. crude oil stocks rose by almost 9 million barrels last week to reach nearly 407 million, the highest level since the government began keeping records in 1982. After tumbling to the lowest level in nearly six years in the previous session, Brent was trading at $48.65 a barrel at 0255 GMT while U.S. crude was at $44.54, versus the six-year low of $44.08 hit on Wednesday.

Meanwhile, the Federal Open Market Committee stuck to its vow to be "patient" on hiking interest rates and raised its view of the economy and labor market on Wednesday, even as the central bank anticipates a further decline in inflation.

Overnight, U.S. stocks declined as the energy sector expanded losses. The Dow Jones Industrial Average ended down 1.1 percent while the tech-heavy Nasdaq Composite shed 0.9 percent. The S&P 500 fell 1.4 percent, a day after it took its biggest hit in more than three weeks.

ASX 200
CNBC 100

Mainland indices down

China's benchmark Shanghai Composite index shed 1.3 percent to a more than two-month low, with financials among the hardest-hit, following reports from state media Xinhua that the mainland's stock regulator will inspect the stock margin trading business of 46 companies.

Brokerages suffered steep losses, with Haitong Securities, Huatai Security and Founder Securities closing down over 3 percent each, while Citic Securities slumped 2.3 percent.

Apart from insurers like Ping An Insurance and China Life Insurance which retreated more than 2 percent each, China Minsheng Bank was among the top losers for the day with a 3 percent slump.

In Hong Kong, the Hang Seng index fell 1.1 percent to a one-week low. Sands China widened losses in the last hour of trading to end down 1.1 percent after fourth quarter net revenue fell 16.2 percent to $2.12 billion.

Read MoreHere's how China's 2015 growth target looks like

Nikkei skids 1.1%

Japan's benchmark Nikkei 225 widened losses on the back of disappointing corporate earnings, and as dollar-yen hovered below the 118 handle.

Nintendo was one of the biggest losers for the day, down over 8 percent, after issuing a profit warning on Wednesday.

Canon also made losses of 5.1 percent. The camera maker reported a slight rise in fourth-quarter profit thanks to a weaker yen and solid office equipment sales, but digital camera sales remain sluggish. Construction equipment makers Hitachi Construction and Komatsu also declined 10.9 and 8.6 percent each, on disappointing corporate reports.

Broker giant Nomura, NTT DoCoMo and Toshiba made losses between 1.2 and 2.2 percent, while Advantest erased losses to bounce up 1.3 percent, ahead of their corporate earnings reports.

Meanwhile, shares of Skymark Airlines were de-listed after the budget carrier filed for bankruptcy protection late on Wednesday, putting the blame on Airbus and fierce competition at home.

In other news, Japan's retail sales for December rose a lesser-than-expected 0.2 percent from a year earlier.

Read MoreJapan's fast-foodchains face new headache

Kospi falls 0.5%

South Korean shares tracked losses in their regional counterparts to finish lower on Thursday. Samsung Electronics, the heaviest weighted stock on the Kospi index, shed 1.3 percent amid choppy trade after announcing a 36 percent on-year fall in fourth quarter profit, confirming its first annual earnings decline in three years.

The country's largest web portal operator Naver also slid 5.3 percent after its profits for the October-December period came in below forecasts.

LG electronics, due to hand in earnings results later in the day, sagged nearly 2 percent.

Read MoreWhy surprise parties are central banks' new thing

ASX gains 0.3%

Australia's key S&P ASX 200 index erased losses to edge up to a four-and-a-half-month high, posting a six-session winning streak, as a rebound in the banking sector offset losses in the beaten-down energy space.

As Westpac trimmed losses to close down 0.1 percent, National Australia Bank, Commonwealth Bank of Australia and ANZ Banking rebounded to make gains between 0.9 and 1.2 percent, respectively.

Oil and gas producers Santos and Liquefied Natural Gas plunged more than 2 percent each, while Oil Search finished down 1.2 percent, as oil prices plumbed fresh six-year lows overnight.

Fortescue Metals climbed nearly 10 percent after announcing that cost cutting measures and a weak Australian dollar have helped it to combat ongoing turmoil in the price of iron ore.

New Zealand's NZX 50 index edged down 0.6 percent, retreating from record highs clinched earlier in the session, while the kiwi dollar erased gains to trade at $0.7299, near three-and-a-half-year lows. Earlier in the session, the Reserve Bank of New Zealand held its benchmark rate steady, but turned dovish as it said its next move could be either up or down after an extended period on hold.

PSE Composite flat

Philippines' benchmark index was slipped 0.5 percent in the afternoon session, backing further away from record highs after leaping 0.8 percent at the open following an upside surprise in the country's fourth quarter gross domestic product (GDP).

The Philippine economy grew an annual 6.9 percent in the October-December period, faster than market expectations of 6.0 percent, government data showed on Thursday. This brings full-year 2014 growth to 6.1 percent.