There were 648,920,244 Bank of Montreal common shares issued and outstanding as at January 31, 2017, and the public float was 648,297,725 common shares.
BMO's previous normal course issuer bid commenced on February 1, 2016, and expired on January 31, 2017. Over the term of the previous bid, BMO did not purchase any of its common shares.
Bank of Montreal's common shares are listed on both the Toronto and New York stock exchanges.
SOURCE BMO Financial Group