** Shares of natural gas producer Southwestern Energy
SWN.N up 0.43% at $6.94 premarket, rising as high as 1.3%
earlier
** Brokerage Mizuho Securities upgrades to "neutral" from
"underperform"; hikes Price Target(PT) to $9 from $6
** New PT represents a 30% upside to stock's last close
** Mizuho says it is adjusting PT to reflect proposed
exchange ratios pending co's acquisition by Chesapeake Energy
CHK.O
** Standalone PT for SWN is $6, but if deal breaks, stock
could trade below the level given weak gas prices
** Earlier this year, CHK said it will buy SWH in a $7.4 bln
all-stock-deal
** SWN shareholders to receive 0.0867 shares of CHK common
stock for each share of SWN common stock outstanding
** SHW stock has gained 5.5% so far this year
(Reporting by Vallari Srivastava)
((Srivastava.Vallari@thomsonreuters.com;))