** Shares of some packaging, forest and paper product cos
rise premarket
** Sealed Air Corp SEE.N up 2.3%, Weyerhaeuser Co WY.N
gains 1.6% and Sylvamo Corp SLVM.N adds 5.2%
** BofA Global Research upgrades SEE, WY and SLVM to "buy"
from "neutral"
** Brokerage says upgrades on SEE and SLVM reflects
attractive valuation in their stocks despite headwinds for cos
** BofA also raises PT for WY to $38 from $34; says co's
exposure to timber exports, land values and carbon capture
beneficial despite impact of high interest rates on housing
segment
** Up to Friday's close, SEE and SLVM down ~18% and ~16% YTD
respectively, while WY up 10.8% YTD
(Reporting by Shristi Achar A in Bengaluru)
((Shristi.AcharA@thomsonreuters.com;))