Share indexes down 1 to 3, U.S. futures weak
Cenbank chiefs reiterate inflation warning this week
Sweden39;s Riksbank latest to hike rates
All eyes on U.S. core prices data due later

LONDON, June 30 Reuters Stocks sank on Thursday to extend what is the worst first half of a year for global share prices on record, as investors fret that the latest show of central bank determination to tame inflation will slow economies rapidly.

Central bank chiefs from the U.S. Federal Reserve, the European Central Bank and the Bank of England met in Portugal this week and voiced their renewed commitment to control inflation no matter what pain it caused.

While there was little new in the messaging, it was another warning that the era of cheap cash which had turbocharged share prices for years is coming to an end.

Traders are now focused on data on U.S. core prices due at 1230 GMT that are expected to underline the extent of the inflation challenge. 

The MSCI World Equity Index was last down 0.67, with its yeartodate losses down more than 20 the worst fall since the index39;s creation. The falls have wiped 13 trillion off stock values.

On Thursday, the Euro STOXX extended earlier falls in the European midsession to drop 2.15, while the German DAX weakened 2.45. Britain39;s FTSE 100 was off 1.98.

U.S. futures fell , sharply, with little sign yet that the new quarter will bring in brave bargain hunters. This year39;s dramatic slide in asset prices has been led by techheavy…