(Adds spreadbetters, updates prices throughout)
* Asian stock markets: tmsnrt.rs/2zpUAr4
* MSCI ex-Japan down over 18 pct this year, Nikkei at 6-month lows
* Wall St suffers worst one-day fall since 2011
* Chip stocks hammered amid earnings, economic worries
By Swati Pandey
SYDNEY, Oct 25 (Reuters) - Asian shares plunged on Thursday as hundreds of billions of dollars haemorrhaged from global markets after a rout in tech stocks inflicted the largest daily decline on Wall Street since 2011, wiping out all its gains for the year.
Stock investors have become increasingly nervous about lofty equities valuations, a likely peak in corporate earnings momentum, faster rate hikes in the United States and an ongoing Sino-U.S. trade war that threatens to hurt world growth.
Spreadbetters pointed to a subdued start for European markets with London's FTSE index, Germany's DAX and France's CAC 40 all set to open in the red. FTSE futures were last down 0.9 percent. E-Minis for the S&P500 were flat after being up as much as 0.4 percent earlier in the day.
MSCI's broadest index of Asia-Pacific shares outside Japan skidded more than 2 percent and has now lost more than 18.5 percent of its value so far this year.
Japan's Nikkei tumbled as much as 4 percent to a six-month trough while the Topix index plunged 3 percent, evaporating more than $155 billion in market value.
Chinese shares too were in the red with the blue-chip index plummeting as much as 2.5 percent as fresh market-support measures by the Chinese government failed to ease worries about high leverage and the tariff war with the United States.
The index did pare some of its losses and was last down 1.2 percent.
"If you're a company and you’re in charge of a capex budget there is so much uncertainty about the next few years in terms of a trade war, in terms of Brexit," said Jim McCafferty, head of Equity Research, Asia ex-Japan at Nomura.
"How, as a management team, will you decide how much capex to invest and where to invest it?"
Some companies, including industrial bellwether Caterpillar , have already warned about the impact on business from U.S. import tariffs.
"Now that markets have some element of the confirmation that tariffs are bringing actual impact to U.S. corporates, there may be a snowflake causing the avalanche scenario as just another factor of worry that now needs to be taken into consideration," said James Stanley, market strategist at DailyFX.
He noted that those bearish on equities were better off focusing outside the United States, at least for now, with Europe one of the weaker links in global stock markets.
The return of the bears has already been more pronounced outside the United States, according to data analysed by Reuters. In addition, a Bank of America Merrill Lynch study recently found that 58 percent of the 2,767 stocks in MSCI's global index are now in bear market territory.
Weak readings on manufacturing in Europe have added to angst over world growth, as has a surprise slump in U.S. home sales, which suggested rising mortgage rates were sapping demand for housing.
Adding to the air of tension, police intercepted suspected bombs mailed to former U.S. President Barack Obama, Hillary Clinton and other high-profile Democrats, as well as to CNN, in what New York officials branded an act of terrorism.
The growing international pressure on Saudi Arabia over the death of journalist Jamal Khashoggi also weighed on investor sentiment.
On Wednesday, the Nasdaq plunged 4.4 percent in its biggest one-day percentage decline since Aug. 18, 2011, vaporising $524 billion in market capitalisation.
The Dow <.DJI > fell 2.4 percent and the S&P 500 lost 3.09 percent.
Also weighing on sentiment, Citi lowered its global growth forecast for both 2019 and 2020 by 0.1 percentage point each to 3.2 percent and 3 percent, respectively, according to a note published Thursday.
In foreign exchange markets, funds flowed to the U.S. dollar and Treasuries and out of the euro and the British pound.
The euro shed 0.7 percent to $1.1397 and breached a major chart bulwark at $1.1430. It was last up 0.1 percent at $1.1407.
Against a basket of currencies, the dollar eased from near a nine-week peak to 96.296.
Sterling hit a seven-week trough $1.2865, having dropped 0.8 percent overnight. It was last a shade higher at $1.2886.
The yen got the usual safe-haven bid, with the euro skidding to a two-month low at 127.68 yen. Even the high-flying dollar eased to 112.02 yen.
Oil prices slipped amid concerns over global growth. Brent crude fell 44 cents to $75.73 a barrel, while U.S. crude dropped 45 cents to $66.37.
Spot gold was a tad firmer at $1,236.76 an ounce.
Reporting by Swati Pandey; addition reporting by Wayne Cole in SYDNEY and Daniel Leussink in TOKYO; Editing by Sam Holmes & Shri Navaratnam