Airstocks, Inc. (1929 - 1930) was an aviation investment firm which was short-lived because of poor financial conditions during the Great Depression. Founded in New York City in 1929, the business liquidated its assets in February 1930. It is important because it was an early financial concern exclusively pertaining to airlines and aviation. Major Leslie MacDill, formerly head of the procurement section of the material division of the air corps, and commanding officer of Wright Field, in Dayton, Ohio, joined the staff of Airstocks, Inc., on August 1, 1929.