As the possibility of Donald Trump winning the US presidency becomes more realistic by the day, local investors are starting to ponder what a Trump presidency could mean for the Australian sharemarket.

The chief investment officer of Australian Foundation Investment Company, Mark Freeman, believes he might have found the answer.

Referring to the large wall that Mr Trump has vowed to build along the border of the US and Mexico if he wins office, Mr Freeman told AFIC shareholders that building materials companies could thrive under a future President Trump.

"One of the stocks we might have to look at is Boral, because they manufacture bricks in the US and they will need a lot of bricks to build that wall," he told AFIC shareholders on Wednesday.