Surf Air Mobility is trading 10.03% up at $0.92, alongside the announcement of its fifth commercial OperatorOS agreement. - The agreement with Flying Zebra was announced October 15; Surf Air Mobility will receive a share of revenue from trips managed through the software. - No confirmed link between the announcement and the share-price move was found. - Airline stocks are also higher, with the sector up 2.03%, a smaller advance.