Boeing's (BA) - Get Report grip on the title of world's largest planemaker seems destined to slip after the company reported a dismal six new orders in August while delivering 18 planes during the month. 

Four of the orders were for the company's 777 widebody and two were for its 787 Dreamliner. A year ago, the company reported 99 orders in August. Year to date, the company has delivered 276 jets, while also booking negative net orders of minus 85. 

European rival Airbus (EADSY)  has increased its year-to-date delivery lead to 224 planes from July's lead of 200 planes. 

The grounding of Boeing's beleaguered 737 MAX jet continues to affect its bottom line as orders year to date are down 75%, according to the company's latest release.

The company didn't deliver any 737 MAX planes in August

Despite the disappointing quarter, Boeing shares were rising 1.98% to $365.87 on Tuesday.