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Proto Labs Inc (PRLB) Ownership Data

Short Interest History (%)

This is the historical short interest of Proto Labs Inc, as measured by the Short Percentage Of Float.

Date Short Interest
August 14, 201518.15
July 31, 201516.63
July 15, 201516.55
June 30, 201515.83
June 15, 201516.44
May 29, 201516.66
May 15, 201516.2
April 30, 201515.39
April 15, 201516.21
March 31, 201517.37
March 13, 201517.41
February 27, 201518.7
February 13, 201518.4
January 30, 201518.12
January 15, 201519.12
December 31, 201418.33
December 15, 201418.25
November 28, 201417.31
November 14, 201417.17
October 31, 201417.4
October 15, 201414.33
September 30, 201412.44
September 15, 201412.17
August 29, 201412.47
August 15, 201413.37
July 31, 201415.78
July 15, 201415.85
June 30, 201413.44
June 13, 201412.47
May 30, 201411.02
May 15, 201411.56
April 30, 201410.55
April 15, 201411.81
March 31, 201411.13
March 14, 201412.66
February 28, 201414.63
February 14, 201416.08
January 31, 201417.36
January 15, 201416.29
December 31, 201315.67
December 13, 201315.91
November 29, 201314.92
November 15, 201316.17
October 31, 201315.95
October 15, 201314.56
September 30, 201315.87
September 13, 201315.17
August 30, 201315.7
August 15, 201315.16
July 31, 201314.39
July 15, 201316.02
June 28, 201313.72
June 14, 201311.33
May 31, 201310.65
May 15, 20139.31
April 30, 20138.13
April 15, 20137.5
March 28, 20135.44
March 15, 20134.11
February 28, 20133.61
February 15, 201339.46
January 31, 201333.57
January 15, 201323.55
December 31, 201219.43
December 14, 201221.96
November 30, 201221.53
November 15, 201223.59
October 31, 201223.84
October 15, 201225.71
September 28, 201227.02
September 14, 201227.74
August 31, 201230.26
August 15, 201234.65
July 31, 201239.11
July 13, 201241.41
June 29, 201223.89
June 15, 201210.55
May 31, 20128.02
May 15, 20127.23
April 30, 20124.91
April 13, 20124.78
March 30, 20121.53
March 15, 20121.13
February 29, 20120.99

Institutional Ownership History (%)

This the Institutional Ownership History of Proto Labs IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
June 30, 201593
March 31, 201598
September 30, 201495
June 30, 201496
March 31, 201490
December 31, 201392
September 30, 201388
June 30, 201381
March 31, 201373
December 31, 201271
September 30, 201235
June 30, 201225
March 31, 201220

Insider ownership (%)

This is the historical insider ownership of Proto Labs Inc. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Date Insider Ownership
July 31, 20159
June 30, 201511
May 31, 201511
April 30, 201511
March 31, 201511
February 28, 201511
January 31, 201511
December 31, 201417
November 30, 201412
October 31, 201412
September 30, 201412
August 31, 201412
July 31, 201412
June 30, 201412
May 31, 201412

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Mr. Lawrence J. LukisChairman of the BOD1,881,8407.26%2015-08-31
Mr. Mark R. KubicekExecutive Vice President145,0000.56%2012-10-02
Margaret A. LoftusDirector66,0120.25%2014-03-13
Victoria M. HoltPresident and CEO20,623less than 0.1%2015-02-09
Mr. Sven A. WehrweinN/A10,563less than 0.1%2015-05-20
Douglas A. KingsleyDirector9,330less than 0.1%2013-02-21
John B. GoodmanDirector7,763less than 0.1%2015-07-01
Donald G. KrantzExecutive VP and Tech. Officer7,090less than 0.1%2015-07-24
Ms. Jacqueline D. SchneiderVice President Global Sales6,729less than 0.1%2015-07-23
Mr. John B. TumeltyVP/GM & Managing Director-EMEA6,717less than 0.1%2015-08-14

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Brown Capital Management, LLC   Premium Plus1,994,6642015-06-307.702.22134,600
Riverbridge Partners LLC   Premium Plus1,639,5882015-06-306.332.09110,639
Vanguard Group, Inc.   Premium Plus1,516,2572015-06-305.850.01102,317
Brown Capital Management Small Company996,5482015-07-313.842.6575,110
Janus Capital Management LLC   Premium Plus973,4162015-06-303.760.0865,686
Ranger Investment Management, L.P.   Premium Plus916,7052015-06-303.543.0161,859
Wells Capital Management Inc.   Premium Plus885,3212015-06-303.420.1059,741
Buffalo Small Cap Fund869,8352015-03-313.362.0360,888
Arrowpoint Asset Management, LLC   Premium Plus766,3452015-06-302.961.2651,713
TimesSquare Capital Management, LLC   Premium Plus744,3002015-06-302.870.2750,225

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