Shares in small Australian production house and distributor Beyond International have tumbled to a one-year low after tipping its annual profit would dive up to 20 per cent. In early trade, its shares fell 11.35 per cent to $1.25.

The revised guidance suggests Beyond, the company behind programs such as MythBusters and Selling Houses Australia, will post a net profit of $7.4 million in the year ending June 30.