BUZZ-QinetiQ: among top FTSE midcap gainers on results
** British defence group QinetiQ shares up 2 pct as co says Q3 trading in line; Co among top gainers on FTSE midcap in volume
** Co sees EMEA services division's performance remaining steady this year; FY expectations unchanged
** More than a fourth of 30-day average volumes traded by 0832 GMT
** Up to Tuesday's close, stock had risen 5.1 pct YTD vs a 1.3 pct rise in the FTSE 350 Aerospace and Defense index (RM (LSE: RM.L - news) :sanjeeban.sarkar.thomsonreuters.com@reuters.net)