** Shares of U.S. pipeline firm Plains All American PAA.O rise 5.5% to $18.72

** Co late on Tuesday said it is selling all of its Natural gas liquids $(NGL)$ business to Keyera Corp KEY.TO for $3.77 bln in cash

** Brokerage Mizuho believes the transaction is positive for PAA's base business by discarding the more commodity-sensitive NGL business at an attractive valuation and creating additional capital allocation headroom

** Brokerage J.P. Morgan calls the deal a modest positive for PAA, adding that ultimately executing on the preferred takeouts and unit repurchases remain the key to value creation

** Transaction expected to close in Q1 of 2026

** Including session's moves, PAA up 9.5% YTD

(Reporting by Sumit Saha in Bengaluru)

((Sumit.Saha@thomsonreuters.com;))