Cancer treatment hopeful Telix Pharmaceuticals has abruptly pulled plans to raise $US200 million ($300 million) and list on the Nasdaq after being forced to offer heavy discounts to find buyers among investors in the United States.

The company had announced its intention for a secondary listing in New York only last week, and shares listed on the ASX – where Telix has a market capitalisation of some $5.4 billion – had entered into a trading halt on Thursday ahead of the Nasdaq initial public offering.