Shares in Brickworks (ASX:BKW) took a tumble, plummeting as much as 9.5% to A$23.34, putting the company on course for its worst day since March 27, 2020 if this downward trend persists.

This makes the stock the top loser on the benchmark ASX 200.

The brick manufacturer reported a substantial 32% decrease in projected fiscal 2023 underlying net profit after tax to A$508 million ($322.88 million).

Brickworks also declared a final dividend of 42 Australian cents per share, despite hitting its lowest level since April 21.

Nevertheless, the stock has increased 16% this year, as of the last close.

Brickworks is a company that manufactures bricks and other building products.