The bookies can reveal the plucky punter placed £15,000 on Jurgen Klopp's side back when they were 4/1 in the outright betting - a price which has since shortened to 5/2.
And it's being reported the Reds are the subject of a staggering 42% of all outright bets in the Premier League so far this season.
Alex Apati of Ladbrokes said: "One plucky punter has clearly seen enough from this Liverpool side to believe they can go all the way this year - and it could be a costly one for us if they do exactly that!"
Ladbrokes Latest Betting
Premier League Winner
Man City - 8/13
Liverpool - 5/2
Chelsea - 10/1
Tottenham - 14/1
Arsenal - 40/1
Man United - 40/1
Watford - 200/1
Everton - 300/1
Leicester - 400/1
Wolves - 500/1
Southampton - 750/1
Brighton - 1000/1
Burnley - 1000/1
Bournemouth - 1000/1
Crystal Palace - 1000/1
Fulham - 1000/1
Newcastle - 1000/1
West Ham - 1000/1
Huddersfield - 2000/1
Cardiff - 2500/1
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