** Shares of Atlas Arteria ALX.AX rise as much as 15.5% to A$5.00, hitting their highest level since February 26
** Stock of the Atlas Arteria set for its strongest intraday session since June 8, 2022, if gains hold
** IFM Global Infrastructure Fund offered to acquire all shares it does not currently own in Atlas Arteria, valuing it at A$6.89 bln ($4.92 bln)
** IFM Global Infrastructure Fund proposed to buy all remaining co's securities at A$4.75 per unit
** IFM's offer price to be increased to maximum of A$5.10 per security if Diamond's relevant interest in co's securities is 45% or more before close of offer
** Day's moves cuts stock's YTD losses to 0.4%
($1 = 1.3992 Australian dollars)
(Reporting by Shivangi Lahiri in Bengaluru)
((shivangi.lahiri@thomsonreuters.com))