UPDATE 1-Top analyst Montier quits SocGen for Grantham's GMO

* Behavioural investor Montier to join GMO

* Quits SocGen after winning Thomson Reuters Extel vote

LONDON, June 25 (Reuters) - One of London's top analysts, James Montier, has resigned from French bank Societe Generale (SOGN.PA) to join Jeremy Grantham's GMO LLC as a member of the asset allocation team, the investment firm said on Thursday.

Montier, who has written a number of books on behavioural finance, hit the headlines in June when he criticised the efficient market hypothesis, the theory that a price encapsulates all known information.

The hypothesis has inflicted "massive amounts of damage" on the money management industry, Montier wrote.

Montier was recently voted best strategist in the Thomson Reuters Extel survey alongside colleague Albert Edwards.

The pair joined Societe Generale from Dresdner Kleinwort in December 2007 as co-heads of global strategy.

Boston-based GMO was co-founded in 1977 by current chairman Jeremy Grantham and has $78 billion in assets under management, according to its website. Most of these assets are held in equities while $27 billion is in asset allocation strategies. (Reporting by Tom Freke; Editing by Dan Lalor)