Buy now pay later platform Afterpay is working with advisers to explore the potential of a US listing "given the US market is now the largest contributor to our business and is expected to continue to grow strongly". However, the company said it would remain headquartered in Australia and set no timeline for a board decision on the listing. A North American IPO would see Afterpay join the likes of software company Atlassian, which was started in Sydney but listed on the US tech-heavy NASDAQ, and is now worth around $US57bn. Elsewhere, Afterpay provided a quarterly update: underlying sales were up 104 per cent in the third quarter of FY21 against the prior comparable period.