* Could raise $450-500 million - sources
* Roadshow to start on Oct. 18, pricing Nov. 1 - source
* IPO expected to complete by end-2010
* Latest sign of revival in Russia IPO market
(Adds deal value, background)
By Maria Kiselyova
MOSCOW, Oct 5 (Reuters) - O'key, Russia's No.3 food retailer by sales, plans to raise up to $500 million in a London share offer to fund expansion, sources told Reuters, making it the latest Russian firm to revive IPO plans after a barren summer.
O'key, which operates a 52-store chain, will launch a global offering of global depositary receipts (GDRs), with each GDR representing one share, by the year-end, it said on Tuesday.
It did not say how much it wanted to raise from the deal -- which will comprise both primary and secondary offer of shares. Two sources familiar with the deal said the company aimed for $450 million to $500 million in proceeds.
"There continues to be substantial under-penetration of modern retail throughout Russia and we believe we have the right business model and customer value proposition to capitalise on the growth opportunity," Chief Executive Patrick Longuet said.
Russia's IPO market is showing signs of life after shutting down amid uncertain summer markets. Electronics materials producer Monocrystal said on Monday it would raise up to $284 million in an IPO, while freight group Transcontainer is aiming for more than $400 million.
EXPANSION
St Petersburg-based O'key, which focuses on the hypermarket format, will start meeting investors as early as Oct. 18, and pricing could take place on Nov. 1, a financial market source told Reuters.
O'key, which declined to comment on the timing, is the third-largest Russian retailer by revenue after X5 and Magnit , with 2009 sales of 67.9 billion roubles ($2.2 billion).
As the Russian retail industry has seen signs of recovering demand, key players unveiled investment plans aimed to help them increase market share on the highly-fragmented market.
X5 Chief Executive Lev Khasis told Reuters Russia Investment Summit last month the company wanted to hike investment in new store openings next year.
And Magnit plans to increase spending to $1.3 billion in 2011 from $1.1 billion in 2010.
"(O'key) intends to use net proceeds from the offering to finance the further expansion of its hypermarket and supermarket footprint in Russia over the next several years and for general corporate purposes," the company said.
A portion of the proceeds could also be used to reduce short-term debt the company may draw to fund expansion.
O'key appointed Goldman Sachs and VTB Capital as joint global coordinators and bookrunners for the offering. (Additional reporting by Olga Popova, Editing by John Bowker, Sharon Lindores) ($1 = 30.44 roubles)