US banking boutique Allen & Co has moved into the top 10 advisory rankings for global initial public offerings on the back of a single bookrunner mandate. However, it helps when that deal is Facebook’s jumbo $18bn-plus flotation.

The social networking group priced its deal at the top of an increased range yesterday and could raise over $18bn. The bookrunners, which received equal deal credit, according to Dealogic, were: Morgan Stanley, JP Morgan, Goldman Sachs, Bank of America Merrill Lynch, Barclays, Allen & Co, Citigroup, Credit Suisse and Deutsche Bank.