Condensed Consolidated Income Statements - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Sales of physical commodities	$ 6,866.2	$ 5,317.0	$ 20,836.4	$ 16,486.3
Trading gains, net	103.4	79.9	296.9	246.9
Commission and clearing fees	96.6	73.0	271.6	212.5
Consulting,management, and account fees	18.3	16.3	53.2	47.5
Interest income	33.7	19.6	85.6	47.7
Other income	0.1	0.1	0.2	0.2
Total revenues	7,118.3	5,505.9	21,543.9	17,041.1
Cost of sales of physical commodities	6,858.5	5,308.3	20,811.3	16,462.2
Operating revenues	259.8	197.6	732.6	578.9
Transaction-based clearing expenses	49.0	33.9	136.6	101.2
Introducing broker commissions	34.1	29.2	101.4	86.1
Interest expense	22.1	11.2	55.4	30.1
Net operating revenues	154.6	123.3	439.2	361.5
Compensation and other expenses:
Compensation and benefits	86.9	75.5	252.3	222.7
Trading systems and market information	8.6	8.3	25.7	25.7
Occupancy and equipment rental	4.2	3.9	12.5	11.1
Professional fees	4.8	3.7	13.4	11.9
Travel and business development	3.7	3.0	10.2	9.6
Non-trading technology and support	3.8	3.2	10.3	8.9
Depreciation and amortization	2.8	2.4	8.4	7.2
Communications	1.3	1.5	4.1	3.9
Bad debts	1.6	0.1	2.9	3.9
Other	6.0	6.7	20.4	18.9
Total compensation and other expenses	123.7	108.3	360.2	323.8
Other gain	2.0	0.0	2.0	0.0
Income before tax	32.9	15.0	81.0	37.7
Income tax expense	8.9	2.3	41.2	7.7
Net income	$ 24.0	$ 12.7	$ 39.8	$ 30.0
Earnings per share:
Basic	$ 1.27	$ 0.67	$ 2.10	$ 1.59
Diluted	$ 1.25	$ 0.66	$ 2.06	$ 1.58
Weighted-average number of common shares outstanding:
Basic	18,597,165	18,447,053	18,524,846	18,365,939
Diluted	18,976,898	18,702,128	18,876,259	18,659,138