** Jefferies and Morningstar raise their price targets, fair value estimate on consumer electronics retailer Harvey Norman HVN.AX after upbeat trading update

** Jefferies nudged its PT to A$8.40 from A$8.30, after HVN reported a rise in aggregated sales revenue from July 1 to November 20

** HVN's acute operating leverage and housing exposure position it for accelerating earnings and further upside, brokerage adds

** Morningstar lifted Harvey Norman’s fair value estimate by 12% to A$5.50, noting solid demand for electronics and home goods during recent rate cuts

** Investment research firm, however, warns U.S. giant Amazon’s AMZN.O aggressive push in Australia looms as HVN’s biggest threat, especially in electronics, where online penetration runs deep

** Stock up 56% so far this year as of last close

(Reporting by Kumar Tanishk in Bengaluru)

((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk http://www.x.com/thatstanishk;))