European shares steady before central bank decisions; Italy lags
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* STOXX Europe 600 index ends down 0.1 percent
* Caution prevails a day ahead of Fed, BoJ meetings
* Political worries, weak bank stocks weigh on Italy
* GVC Holdings top STOXX gainer after target upgrades
By Danilo Masoni
MILAN , Sept 20 (Reuters) - European shares ended little changed on Tuesday as investors remained cautious ahead of monetary policy decisions from the Federal Reserve and Bank of Japan on Wednesday.
Market volatility has spiked this month because of changing expectations over when the Fed could raise rates, but mixed data cast doubt over the health of the world's biggest economy, reducing the chance of a hike this month.
Futures are pricing the chance of a U.S. rate rise this week at just 15 percent, while the chance of a December hike is seen at almost 60 percent, according to CME Group's FedWatch tool. Continuación...