Seagate slips after quarterly results; Morgan Stanley trims PT
** Shares of data storage provider Seagate Technology STX.O fall 1.39% to $658.57 premarket
** Co posted Q1 revenue of $4.23 bln on Tuesday, above analysts' average estimate of $4.14 bln, according to data compiled by LSEG
** Brokerage Morgan Stanley cuts PT to $1,148 from $1,200 on weaker exabyte growth and smaller cost declines
** Co, however, forecast Q2 revenue of $4.8 bln, plus or minus $100 mln, above estimates of $4.32 bln
** Average rating of 27 analysts is "buy"; median PT is $1,000 - data compiled by LSEG
** Up to last close, stock more than doubled YTD