Nio (HKG:9866) delivered 23,231 vehicles in May, up 13.1% from a year earlier, according to a Sunday Hong Kong bourse filing.

Year-to-date deliveries totaled 89,225 units, a 34.7% increase year-over-year. Cumulative deliveries reached 760,789 as of May 31.

May deliveries included 13,270 NIO-branded vehicles, 6,281 under its ONVO family line, and 3,680 FIREFLY models.

Shares of the EV maker were down about 4% in recent trade on Monday.