** New York state-based Elmira Savings Bank shares ESBK.O
up 65.9% at a seven-year high of $22.40 premarket
** Stock set for best daily pct gain on record
** Community Bank System CBU.N unit to buy ESBK in
all-cash transaction valued at ~$82.8 million, the banks
announce on Monday urn:newsml:reuters.com:*:nBw4G9bdWa
** ESBK shareholders will receive $23.10 in cash for each
share, representing a premium of 71.1% to ESBK's last close;
deal unanimously approved by boards of both banks
** CBU unchanged in premarket trade
** ESBK among best performing U.S. stocks in premarket
trade, volumes at nearly twenty times their 25-day moving avg
** ESBK up 17.4% YTD
(Reporting by Anisha Sircar)
((anisha.sircar@thomsonreuters.com))