Investor Relations

Ownership Profile

Shareholder Breakdown

Shareholder Holders Value ($MM) % O/S Shares
Institution 214 951.57 108.95 33,290,006
Mutual Fund 292 433.70 48.00 14,667,832
Insider 14 30.34 3.07 936,741

Institutional Shareholder Rotation

Shareholder Holders Value Chg ($MM) % O/S Share Change
Buyers 96 162.74 18.45 5,636,591
Sellers 140 -127.38 14.60 -4,460,912
Net -- 35.36 3.85 1,175,679

Institutional Shareholder Concentration

Value ($MM) % O/S Shares
Total Inst. 951.57 108.95 33,290,006
Top 10 Inst. 477.20 55.42 16,934,145
Top 20 Inst. 648.04 74.59 22,790,428
Top 50 Inst. 845.71 96.89 29,603,688

Institutional Shareholder Style

Holders Value ($MM) % Inst Shares Shares
Growth 46 187.50 21.14 6,458,737
Aggressive Growth 1 0.13 0.01 4,500
Core Growth 36 162.22 18.20 5,561,673
Growth 9 25.15 2.92 892,564
Income 4 2.44 0.28 86,289
Income Value 1 2.28 0.26 80,871
Yield 3 0.16 0.02 5,418
Index 22 159.04 18.47 5,642,330
Other 77 407.41 46.89 14,326,342
Broker Dealer 15 18.72 2.17 664,430
GARP 25 125.48 14.55 4,445,754
Hedge Fund 33 248.16 28.82 8,804,820
Specialty 3 14.44 1.28 389,778
VC/Private Equi 1 0.61 0.07 21,560
Value 29 135.90 15.66 4,786,373
Core Value 22 128.13 14.77 4,512,059
Deep Value 7 7.77 0.90 274,314

Top Holders: Institutional Investor

Holder Shares Held % O/S Share Change Filing Date
Wellington Management Company, LLP 3,008,862 9.85 -60,110 12/31/18
HealthCor Management, L.P. 2,490,110 8.15 540,110 12/31/18
BlackRock Institutional Trust Company, N.A. 2,079,326 6.81 -115,279 12/31/18
Deerfield Management Company, L.P. 2,078,375 6.80 -69,575 12/31/18
Invesco Advisers, Inc. 1,748,453 5.72 163,092 12/31/18
The Vanguard Group, Inc. 1,460,220 4.78 83,150 12/31/18
Millennium Management LLC 1,247,783 4.08 225,853 12/31/18
AllianceBernstein L.P. 1,091,936 3.57 -10,513 12/31/18
Federated Global Investment Management Corp. 884,100 2.89 -- 12/31/18
Waddell & Reed Investment Management Company 844,980 2.77 664,680 12/31/18
Ivy Investments 842,700 2.76 675,800 12/31/18
First Light Asset Management, LLC 701,398 2.30 184,277 12/31/18
Westfield Capital Management Company, L.P. 685,856 2.24 211,574 12/31/18
State Street Global Advisors (US) 663,634 2.17 -23,745 12/31/18
Nuveen LLC 578,420 1.89 -2,169 12/31/18
APG Asset Management 561,536 1.84 404,780 6/30/18
Point72 Asset Management, L.P. 525,000 1.72 203,948 12/31/18
Rock Springs Capital Management LP 465,000 1.52 5,000 12/31/18
OppenheimerFunds, Inc. 430,002 1.41 16,273 12/31/18
Earnhardt (Lisa D) 402,737 1.32 23,372 1/16/19
Baron Capital Management, Inc. 395,650 1.29 2,314 12/31/18
William Blair Investment Management, LLC 389,624 1.28 120,010 12/31/18
MIV Asset Management AG 373,000 1.22 -- 6/30/18
Northern Trust Investments, Inc. 366,214 1.20 -5,381 12/31/18
Neuberger Berman, LLC 362,223 1.19 25,564 12/31/18
Geode Capital Management, L.L.C. 341,570 1.12 29,102 12/31/18
GLG Partners LP 331,487 1.08 331,487 12/31/18
Adage Capital Management, L.P. 300,000 0.98 150,000 12/31/18
Broadfin Capital, L.L.C. 287,900 0.94 53,700 12/31/18
Morgan Stanley Investment Management Inc. (US) 274,644 0.90 96,883 12/31/18

* Insider values reflect direct beneficial ownership.

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