Pros Holdings Inc. (PRO)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	5,670,130	$124,516,055	0%
2.	Blackrock, Inc.	4,644,690	$101,997,392	0%
3.	Brown Advisory Inc	2,417,003	$53,077,386	0.06%
4.	Linden Advisors LpBOND	54,834,000	$52,290,290	0.43%
5.	Fred Alger Management Inc	2,207,784	$48,482,936	0.23%