Domestic Box Office For September 2017
Wide releases are those released in at least 600 theaters.
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | It | $327,481,748 | 4,148 | $123,403,419 | 37.7% | 4,103 | Sep 8 | Dec 14 | Warner Bros. |
| 2 | Kingsman: The Golden Circle | $100,229,647 | 4,038 | $39,023,010 | 38.9% | 4,003 | Sep 22 | Jan 4 | Twentieth Century Fox |
| 3 | The Lego Ninjago Movie | $59,281,555 | 4,047 | $20,433,071 | 34.5% | 4,047 | Sep 22 | Nov 30 | Warner Bros. |
| 4 | American Made | $51,342,000 | 3,098 | $16,776,390 | 32.7% | 3,024 | Sep 29 | Dec 14 | Universal Pictures |
| 5 | American Assassin | $36,249,674 | 3,154 | $14,846,778 | 41% | 3,154 | Sep 15 | Nov 9 | Lionsgate |
| 6 | Home Again | $27,020,284 | 3,036 | $8,567,881 | 31.7% | 2,940 | Sep 8 | Nov 9 | Open Road Films (II) |
| 7 | Mother! | $17,800,004 | 2,368 | $7,534,673 | 42.3% | 2,368 | Sep 15 | Oct 26 | Paramount Pictures |
| 8 | Flatliners | $16,883,115 | 2,552 | $6,574,326 | 38.9% | 2,552 | Sep 29 | Nov 23 | Sony Pictures Releasing |
| 9 | Battle of the Sexes | $12,638,526 | 1,822 | $518,332 | 4.1% | 21 | Sep 29 | Dec 21 | Fox Searchlight Pictures |
| 10 | Stronger | $4,211,129 | 645 | $1,611,040 | 38.3% | 573 | Sep 29 | Nov 30 | Roadside Attractions |
| 11 | Friend Request | $3,759,078 | 2,573 | $2,002,863 | 53.3% | 2,573 | Sep 22 | Nov 30 | Entertainment Studios Motion Pictures |
| 12 | Close Encounters of the Third Kind 2017 Re-release | $3,100,479 | 901 | $1,767,758 | 57% | 901 | Sep 1 | Sep 21 | Sony Pictures Releasing |
| 13 | A Question of Faith | $2,587,072 | 661 | $1,025,489 | 39.6% | 661 | Sep 29 | Dec 14 | Pure Flix Entertainment |
| 14 | Tulip Fever | $2,455,635 | 772 | $1,158,017 | 47.2% | 765 | Sep 1 | Nov 16 | The Weinstein Company |
