Propetro Holding Corp. (PUMP)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	5,903,876	$56,145,861	0%
2.	Ubs Group Ag	384,293	$3,654,626	0%
3.	Nisa Investment Advisors, Llc	160,839	$1,529,579	0.01%
4.	Wedge Capital Management L L P	140,569	$1,336,811	0.02%
5.	Comerica Bank	51,472	$489,499	0%