OWNERSHIP PROFILE

SHAREHOLDER BREAKDOWN

Shareholder Holders Value ($MM) % O/S Shares
Institution 61 85.01 83.68 13,077,348
Mutual Fund 54 14.69 13.55 2,117,495
Insider 5 4.29 5.32 831,884

INSTITUTIONAL SHAREHOLDER ROTATION

Shareholder Holders Value Chg ($MM) % O/S Share Change
Buyers 20 4.29 4.06 633,754
Sellers 21 -2.88 3.15 -491,591
Net -- 1.42 0.91 142,163

INSTITUTIONAL SHAREHOLDER CONCENTRATION

Value ($MM) % O/S Shares
Total Inst. 85.01 83.68 13,077,348
Top 10 Inst. 72.89 72.23 11,288,511
Top 20 Inst. 80.47 79.42 12,412,093
Top 50 Inst. 84.93 83.61 13,065,665

INSTITUTIONAL SHAREHOLDER STYLE

Holders Value ($MM) % Inst Shares Shares
Growth 12 9.62 9.12 1,425,604
Aggressive Growth 3 2.53 2.40 374,328
Core Growth 9 7.10 6.73 1,051,276
Income 2 0.16 0.15 23,379
Income Value 2 0.16 0.15 23,379
Index 6 5.45 5.17 807,597
Other 16 46.02 43.59 6,811,874
Broker Dealer 4 0.15 0.14 22,445
GARP 4 0.50 0.44 68,099
Hedge Fund 7 38.95 36.93 5,770,609
VC/Private Equi 1 6.42 6.08 950,721
Value 12 14.88 16.20 2,531,545
Core Value 8 14.19 15.55 2,429,558
Deep Value 4 0.69 0.65 101,987

TOP HOLDERS: INSTITUTIONAL INVESTOR

Holder Shares Held % O/S Share Change Filing Date
Grace Brothers Management, LLC 5,363,073 34.32 197,936 5/22/17
Eliot Rose Asset Management, L.L.C. 1,229,715 7.87 -261,794 12/31/16
NGP Energy Technology Partners, L.P. 950,721 6.08 -- 5/22/17
Dimensional Fund Advisors, L.P. 925,975 5.93 64,075 9/30/17
Whitmore (Bradford Todd) 841,185 5.38 61,572 2/24/17
Wellington Management Company, LLP 763,944 4.89 -64,000 9/30/17
Franklin Advisory Services, LLC 367,321 2.35 77,321 9/30/17
The Vanguard Group, Inc. 290,103 1.86 -29,044 9/30/17
Global X Management Company LLC 286,186 1.83 167,553 9/30/17
Popielec (Michael D) 270,288 1.73 -- 5/22/17
Bridgeway Capital Management, Inc. 237,000 1.52 31,000 9/30/17
Renaissance Technologies LLC 217,794 1.39 -1,706 9/30/17
Essex Investment Management Company, LLC 112,328 0.72 -2,570 9/30/17
BlackRock Institutional Trust Company, N.A. 110,432 0.71 -1,262 9/30/17
Algert Global LLC 97,386 0.62 15,004 9/30/17
Singh (Ranjit C) 79,801 0.51 -- 5/22/17
Spark Investment Management LLC 76,100 0.49 -- 9/30/17
Fain (Philip A) 66,448 0.43 -- 5/22/17
Geode Capital Management, L.L.C. 63,199 0.40 -- 9/30/17
Deutsche Asset Management Americas 63,094 0.40 -11,533 9/30/17
Saeli (Thomas Louis) 56,246 0.36 4,000 5/24/17
Acadian Asset Management LLC 54,213 0.35 19,294 9/30/17
Municipal Employees' Retirement System of Michigan 53,810 0.34 -- 9/30/17
Shaw (Robert W II) 50,000 0.32 1,720 11/7/17
LSV Asset Management 45,824 0.29 -- 9/30/17
O'Shaughnessy Asset Management, LLC 44,684 0.29 21,588 9/30/17
Numeric Investors LLC 43,814 0.28 -5,800 9/30/17
Bailard, Inc. 39,200 0.25 15,100 10/31/17
California Public Employees' Retirement System 31,400 0.20 -- 9/30/17
Northern Trust Investments, Inc. 26,277 0.17 -300 9/30/17
Teton Advisors, Inc. 25,000 0.16 -- 9/30/17
Anderson (Steven Mark) 18,500 0.12 7,045 5/22/17
Shikiar Asset Management, Inc. 18,000 0.12 -- 9/30/17
Principal Funds, Inc. 17,903 0.11 -- 10/31/17
Carosa Stanton Asset Management, LLC 17,400 0.11 -- 7/31/17
Alambic Investment Management, L.P. 15,197 0.10 600 9/30/17
Virtu Americas LLC 14,897 0.10 -4,689 9/30/17
BNY Mellon Asset Management 13,379 0.09 -8,549 9/30/17
Saturna Capital Corporation 10,000 0.06 -- 9/30/17
Morgan Stanley Wealth Management 8,105 0.05 -1,825 9/30/17
Prelude Capital Management, LLC 7,200 0.05 3,662 9/30/17
Acrospire Investment Management LLC 6,963 0.04 6,963 6/30/17
T. Rowe Price Associates, Inc. 5,800 0.04 -- 9/30/17
Invesco Advisers, Inc. 5,699 0.04 -- 10/31/17
Guggenheim Investments 5,005 0.03 -624 10/31/17
BlackRock Financial Management, Inc. 4,545 0.03 -- 9/30/17
UBS Financial Services, Inc. 4,311 0.03 1,311 9/30/17
Morgan Stanley & Co. LLC 3,581 0.02 1,989 9/30/17
Bank of America Merrill Lynch (US) 3,539 0.02 3,539 9/30/17
IHT Wealth Management, LLC 3,080 0.02 3,080 9/30/17

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* Insider values reflect direct beneficial ownership.