Trainer Mitchell Beer has been fined following a tweet offering to promote shares in a racehorse without holding the relevant licence.

Racing Victoria stewards ruled his conduct, or negligence, could have lead to a breach of an Australian racing rule.

The rule states that any person wishing to make an offer to promote shares in a racehorse, or racehorses, must hold an Australian Financial Services Licence issued by the Australian Securities Commission.

The matter relates to a tweet on July 19 in which Beer offered to promote shares in a Hallowed Crown x Evening Glitter colt.

Beer pleaded guilty to the charge and was fined $1500.