By Sara Sjolin
LONDON (MarketWatch) -- Yields on 10-year Spanish government bonds ES:10YR_ESP -5.98% dropped below 6% for the first time since June in afternoon European trade on Thursday, after European Central Bank President Mario Draghi said the bank would launch an unlimited bond-buying program. Yields on the 10-year paper plunged 39 basis points to 5.99%, according to electronic trading platform Tradeweb. Spanish stocks rallied, with the IBEX 35 index XX:IBEX +4.34% surging 4.5% to 7,833.40.
