The ten-year-old is as short as 33/1 for Saturday's race.
With all the talk about Tiger Roll, there might be Nicky Henderson horse - priced at 33/1 with the majority of bookmakers - that has gone under the Grand National radar.
Valtor is 50/1 best price for the showpiece event, yet punters have gone nowhere near the ten-year-old.
A winner on his English debut in December after a number of races in France, he was pulled up in his last outing at Cheltenham in January.
A positive though, is that the horse is a reliable and solid jumper, with only two falls in over six years of jumps experience.
Henderson has famously never won the world’s greatest steeplechase, and with just 0.41% of bets, if punters’ instincts are correct then it appears Valtor won’t be the one to break this drought.
If he did achieve a victory at his current best price it would be the biggest odds for a winner since Auroras Encore triumphed at 66/1 in 2013.
Elsewhere, the betting is still dominated by Tiger Roll, who is a 4/1 shot to emulate Red Rum in the 1970’s and rack up back-to-back Grand Nationals.
Oddschecker spokesman George Elek: "Nicky Henderson has a few runners that are looking to steal the headlines at Aintree, such as Cheltenham hero Pentland Hills and former Champion Hurdler Buveur D'Air, but Valtor is the one nobody wants to back.
Aintree will likely be fairly quiet should Valtor get home in front given his big price and the lack of interest from punters."