Reuters Market Eye - Citigroup downgrades Larsen & Toubro Ltd
Earnings "were a warning that investors/analysts need to curb their enthusiasm," the bank adds.
Deustche Bank also downgrades L&T, to "hold" from "buy", citing concerns about valuations and says large order wins are in the low-margin hydrocarbons sector.
L&T falls as much as 7.9 percent, heads for biggest fall since July 2009.
(Reporting by Manoj Rawal)