The UCL spinout has priced its shares at the top of its range and secured $150m in proceeds, up from its initial target of $100m.

The Northwestern University-backed neurologic disorder therapy developer floated at the top of its range, increasing the share volume at the same time.

EMS-backed gene therapy developer AvroBio has secured $99.7m in an initial public offering that could potentially rise to $115m.

Chain, which has raised $43m from investors including Visa, Orange, Nasdaq, Fiserv, Capital One and Citi, could be acquired for $500m in cash and tokens.

UBC cannabis services spinout Anandia has been acquired by marijuana distributor Aurora Cannabis for $86.5m as Canada prepares to legalise the drug for recreational purposes.

Online advertising platform AppNexus is in talks with AT&T over a deal that would follow more than $340m of funding from backers such as WPP, Microsoft, News Corp and Deutsche Telekom.

Qualcomm, China Mobile and SF Express are among seven cornerstone investors that will buy 10% of the shares in the Hong Kong offering.

Indoor location software provider July Systems, which has received funding from Intel, Acer and Motorola, is set to be bought by Cisco.