Ownership Profile

Shareholder Breakdown
Shareholder Holders Values ($) % O/S Shares
Institution 149 350 97.45 58,980,660
Mutual Fund 186 125 36.31 21,974,991
Institutional Shareholder Rotation
Shareholder Holders Values Change ($) % O/S Shares Change
Buyers 62 22.76 6.00 3,632,310
Sellers 64 -30.15 7.65 -4,629,547
Net -- -7.38 1.65 -997,237
Institutional Shareholder Concentration
Shareholder Values ($) % O/S Shares
Top 10 Inst. 210 58.93 35,666,544
Top 20 Inst. 266.73 74.72 45,218,804
Top 50 Inst. 328.53 91.53 55,395,586
Total Inst. 328.53 91.53 55,395,586
Institutional Shareholder Style
Shareholder Holders Values ($) % O/S Shares
Index 23 52 15.77 8,717,340
CoreGrowth 24 77 23.35 12,908,676
Growth 5 34 10.41 5,754,554
AggresGr 4 9 2.80 1,550,245
IncomeValue 2 4 1.23 679,473
HedgeFund 12 15 4.45 2,462,224
GARP 12 9 2.84 1,571,853
BrokerDealer 13 4 1.31 726,889
Specialty 2 1 0.36 199,315
VCPrivateEquity 1 1 0.26 143,083
DeepValue 12 82 24.90 13,765,391
CoreValue 17 41 11.65 6,443,893
Top Holders: Institutional Investor
Holder Shares Held % O/S Shares Change Filing Date
Jennison Associates LLC 5,617,615 9.28 138,715 06/30/2015
Boston Partners 5,144,114 8.50 254,112 06/30/2015
Dimensional Fund Advisors, L.P. 5,090,488 8.41 33,719 06/30/2015
Rutabaga Capital Management LLC 4,615,594 7.63 34,502 06/30/2015
Wellington Management Company, LLP 3,611,993 5.97 0 06/30/2015
BlackRock Institutional Trust Company, N.A. 3,157,599 5.22 -199,335 06/30/2015
Segall, Bryant & Hamill Investment Counsel 2,489,984 4.11 73,448 06/30/2015
Leight (Nathan D) 2,267,882 3.75 73,993 09/30/2015
The Vanguard Group, Inc. 1,923,140 3.18 29,558 06/30/2015
American Century Investment Management, Inc. 1,748,135 2.89 16,028 06/30/2015
Columbia Threadneedle Investments (US) 1,371,248 2.27 -55,384 06/30/2015
Century Management 1,363,333 2.25 -118,228 06/30/2015
Northern Trust Investments, Inc. 1,192,466 1.97 -23,492 06/30/2015
AJO, LP 989,360 1.63 -40,350 06/30/2015
State Street Global Advisors (US) 922,385 1.52 -2,993 06/30/2015
The Boston Company Asset Management, LLC 854,075 1.41 -1,211,120 06/30/2015
Weiss (Jason G) 745,656 1.23 3,844 09/30/2015
Kennedy Capital Management, Inc. 740,108 1.22 -5,185 06/30/2015
Prescott Group Capital Management, LLC 695,202 1.15 47,812 06/30/2015
Minerva Advisors LLC 678,427 1.12 200,000 06/30/2015
British Columbia Investment Management Corp. 670,680 1.11 388,600 03/31/2014
Morgan Stanley Wealth Management 631,208 1.04 113,599 06/30/2015
Cooper Creek Partners Management LLC 631,187 1.04 631,187 06/30/2015
Walthausen & Co., LLC 617,675 1.02 617,675 06/30/2015
Next Century Growth Investors, LLC 559,300 0.92 80,400 08/31/2015
Barrow, Hanley, Mewhinney & Strauss, LLC 489,409 0.81 -22,040 08/31/2015
Bridgeway Capital Management, Inc. 451,750 0.75 0 06/30/2015
William Blair & Company, L.L.C. 420,700 0.70 129,400 08/31/2015
Marathon Capital Management 389,550 0.64 -10,500 06/30/2015
Credit Suisse Securities (USA) LLC 369,037 0.61 3,784 06/30/2015
Geode Capital Management, L.L.C. 368,223 0.61 30,114 06/30/2015
Delaware Investments 350,116 0.58 -18,048 05/31/2015
Hotchkis and Wiley Capital Management, LLC 348,541 0.58 -54,803 08/31/2015
Credit Suisse Asset Management 339,618 0.56 0 06/30/2015
TIAA-CREF 295,582 0.49 -30,869 06/30/2015
Northern Trust Global Investments Ltd. 295,322 0.49 -8,118 06/30/2015
Alpine Woods Capital Investors, LLC 275,000 0.45 75,000 06/30/2015
North Star Investment Management Corporation 269,675 0.45 76,375 06/30/2015
Foundry Partners, LLC 242,264 0.40 39,449 06/30/2015
Charter Oak Partners Management, L.P. 236,637 0.39 -50,000 09/30/2014
BlackRock Investment Management, LLC 233,831 0.39 36,804 06/30/2015
DIAM U.S.A., Inc. 215,600 0.36 500 06/30/2015
California Public Employees' Retirement System 212,300 0.35 34,100 06/30/2015
Keeley Asset Management Corp. 202,665 0.33 11,945 06/30/2015
BNY Mellon Asset Management 190,064 0.31 -328 06/30/2015
Berger (Jonathan W) 179,935 0.30 3,595 05/07/2015
Neuberger Berman, LLC 179,460 0.30 117,170 08/31/2015
Absolute Investment Advisers LLC 171,046 0.28 0 06/30/2015
Managed Account Advisors LLC 170,980 0.28 1,339 06/30/2015
Charles Schwab Investment Management, Inc. 169,427 0.28 5,062 06/30/2015

Ownership data is provided by Thomson Reuters, a third party service, and Great Lakes Dredge & Dock Corporation does not maintain or provide information directly to this service.