Broker Data 10th - 12th May, page-54

Curious they are identical quantities to those on Thurs 18th -

	Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
0	18/05/2017	14:46:07	0.0595	5,000,000	$297,500.00	CXXT
1	18/05/2017	14:50:03	0.0595	6,500,000	$386,750.00	CXXT

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these are showing as cross trades but broker data shows GMP sell / ITGAus buy
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Investment Technology Group, Inc. (NYSE: ITG) is a global financial technology company https://www.itg.com/
This company has a package called Triton execution management system. Perhaps it went rogue and thought it was buying shares in itself.
Gawd I must be f*ing bored.