** Aberdeen Asset Management's shares down 2.5 pct,underperforming FTSE midcaps (marginally down), afterCiti cuts to "sell"
** Analysts say Aberdeen shares have bounced 42 pct sincehitting 4-yr low on Jan. 20, reflecting "too much optimism, toosoon"
** Shares still down 40 pct since peak in April 2015,analysts add
** Citi analysts see little risk of short squeeze, and sayH1 results on May 3 are unlikely to present positive surprise
** "In fact, continued Global Equity underperformance ismore likely to have led to more net fund outflows thananticipated, we think," analysts write
** Stock bottom of the Stoxx 600 Financial Services Index, which is up 0.5 pct (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)