The Republican candidate won the presidential election on November 9 Australian time.

On that day, BlueScope’s share price was $7.40.

Five days later the price had jumped to $9 a share and has remained above that figure ever since.

On Tuesday, one share in BlueScope was selling for $9.34 – a rise of 25 per cent in just a few weeks and the steelmaker’s highest price since April 2011.

Some pundits have suggested the boost is because BlueScope could benefit if Mr Trump comes good on promises to improve industry and infrastructure spending in the United States.

BlueScope owns the North Star steel mill in Ohio, having bought out the 50 per cent share held by joint venture partner Cargill in October 2015.

The US steel mill has seen a 79 per cent increase in output since the 2000-01 financial year, according to the company.

The company is benefiting from the US government’s tough stance on steel dumping and the slapping of duties on imported steel, which has seen the price of hot rolled coil rise.

A BlueScope spokesman said the company did not “provide commentary on share price movements”.

The spokesman also said the steelmaker was “apolitical” and worked with whoever was in government.

But he said any improvement in the United States would have a positive effect for BlueScope and its businesses based there.

“We have a number of very good business in the US – North Star BlueScope, Steelscape and our Butler Buildings business –  with about 2500-3000 employees in total,” the spokesman said.

“These businesses are structurally advantaged and will benefit from any domestic economic improvement in the US, especially in regards to building and construction activity.”