Sirtex Medical shares have been subject to a yo-yo trading session following the medical device company's decision to fire chief executive Gilman Wong at the end of last week.
Shares in the liver cancer biotech firm leaped 1.52 per cent in the first few minutes of trade on Monday and then slipped 0.57 per cent into the red before sitting flat after an hour.
The stock continued to move up and down throughout the day, eventually closing at $15.82 - down two cents, or 0.13 per cent.
Sirtex axed Mr Wong after the market closed on Friday over his trading in the company's shares.
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