Ownership Profile

Shareholder Breakdown

Shareholder Holders Value ($MM) % O/S Shares
Institution 42 24.52 50.17 12,392,102
Mutual Fund 14 0.49 1.55 381,799
Insider 3 2.05 1.82 448,598

Institutional Shareholder Rotation

Shareholder Holders Value Chg ($MM) % O/S Share Change
Buyers 16 1.24 2.89 712,688
Sellers 11 -2.36 6.09 -1,503,371
Net -- -1.12 3.20 -790,683

Institutional Shareholder Concentration

Value ($MM) % O/S Shares
Total Inst. 24.52 50.17 12,392,102
Top 10 Inst. 23.72 48.12 11,885,284
Top 20 Inst. 24.39 49.85 12,313,963
Top 50 Inst. 24.52 50.17 12,392,102

Institutional Shareholder Style

Holders Value ($MM) % Inst Shares Shares
Growth 5 0.14 0.35 87,077
Aggressive Growth 1 0.10 0.26 65,000
Core Growth 4 0.03 0.09 22,077
Income 2 0.01 0.02 5,258
Income Value 1 0.01 0.02 3,758
Yield 1 -- 0.01 1,500
Index 5 1.20 3.09 762,524
Other 14 11.66 28.41 7,016,410
Broker Dealer 4 0.19 0.48 117,899
GARP 2 0.12 0.31 76,989
Hedge Fund 6 0.95 2.15 530,594
VC/Private Equi 2 10.40 25.47 6,290,928
Value 4 0.02 0.05 13,300
Core Value 2 0.02 0.03 8,069
Deep Value 2 0.01 0.02 5,231

Top Holders: Institutional Investor

Fund Shares Held % O/S Share Change Filing Date
Vanguard Extended Market Index Fund 85,853 0.35 -59,703 8/31/17
Vanguard Total Stock Market Index Fund 71,663 0.29 15,569 8/31/17
Bridgeway Ultra-Small Company Market Fund 65,000 0.26 -- 6/30/17
T. Rowe Price Extended Equity Market Index Fund 52,700 0.21 -- 9/30/17
iShares Micro-Cap ETF 34,503 0.14 -2,112 9/30/17
Fidelity Extended Market Index Fund 33,461 0.14 -- 8/31/17
Fidelity NASDAQ Composite Index Fund 16,656 0.07 -- 8/31/17
Fidelity Total Market Index Fund 6,105 0.02 -- 8/31/17
Wilshire Micro-Cap ETF 5,323 0.02 -- 7/31/17
iShares Core S&P Total U.S. Stock Market ETF 3,796 0.02 399 9/30/17
1290 VT Micro Cap Portfolio 2,745 0.01 -- 7/31/17
Legg Mason Small-Cap Quality Value ETF 2,486 0.01 2,486 8/31/17
Vanguard US Equity Index Fund 1,400 0.01 -- 7/31/17
Vanguard US Total Market Index ETF 108 -- 108 7/31/17

Top Holders

Holder Shares Held % O/S Share Change Filing Date
Third Rock Ventures, LLC 4,841,591 19.60 -- 9/30/17
Clairmark Investments, Ltd. 3,582,328 14.50 3,582,328 9/20/16
JAFCO Co., Ltd. 1,449,337 5.87 -- 4/7/17
BlackRock Institutional Trust Company, N.A. 442,659 1.79 -2,315 6/30/17
Celniker (Abbie C) 409,915 1.66 -- 9/30/17
Hurly (Stephen A.) 398,031 1.61 -- 9/30/17
Sabby Management, LLC 348,893 1.41 348,893 12/31/16
The Vanguard Group, Inc. 206,450 0.84 30,600 6/30/17
KCG Americas LLC 111,480 0.45 111,480 6/30/17
Spark Investment Management LLC 94,600 0.38 94,600 6/30/17
Lynch (Daniel S) 70,879 0.29 -- 9/30/17
Bridgeway Capital Management, Inc. 65,000 0.26 -- 6/30/17
Geode Capital Management, L.L.C. 56,222 0.23 9,035 6/30/17
T. Rowe Price Associates, Inc. 52,700 0.21 24,500 6/30/17
A.R.T. Advisors, LLC 49,643 0.20 49,643 6/30/17
Mellon Capital Management Corporation 36,600 0.15 -- 6/30/17
Tubridy (Karen L) 32,753 0.13 -- 9/30/17
PanAgora Asset Management Inc. 24,289 0.10 -- 6/30/17
Northern Trust Investments, Inc. 20,593 0.08 -- 6/30/17
Fiduciary Trust Company 20,000 0.08 -- 6/30/17
Two Sigma Investments, LP 17,489 0.07 17,489 6/30/17
OxFORD Asset Management 13,820 0.06 13,820 6/30/17
Acrospire Investment Management LLC 6,149 0.02 -300 6/30/17
McCabe (John J) 5,930 0.02 -- 9/30/17
Morgan Stanley & Co. LLC 5,419 0.02 46 6/30/17
Guggenheim Investments 5,324 0.02 5,324 3/31/17
BNY Mellon Asset Management 3,758 0.02 -- 6/30/17
UBS Financial Services, Inc. 2,846 0.01 27 6/30/17
BlackRock Investment Management, LLC 2,745 0.01 2,745 6/30/17
AXA Rosenberg Investment Management LLC 2,745 0.01 -- 7/31/17
Royce & Associates, LP 2,486 0.01 2,486 8/31/17
Independent Financial Partners 2,000 0.01 -- 6/30/17
Morgan Stanley Wealth Management 1,876 0.01 -- 6/30/17
CAPTRUST Financial Advisors 1,500 0.01 1,500 6/30/17
Advisor Group, Inc 1,300 0.01 500 6/30/17
Advantage Investment Management, LLC 1,000 -- -- 6/30/17
RBC Capital Markets Wealth Management 500 -- -- 6/30/17
Citi Investment Research (US) 500 -- -- 6/30/17
IHT Wealth Management, LLC 490 -- -- 6/30/17
Deutsche Asset Management Americas 200 -- -500 6/30/17
Cutler Group, LP 61 -- -400 9/30/17
Northern Trust Global Investments 1 -- -- 6/30/17

* Insider values reflect direct beneficial ownership.

Copyright Thomson Reuters Corporation