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ZIX CORP COM
ZIX CORP COM. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 134 Institutional holders with a total value of $196,010,072.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PENSERRA CAPITAL MANAGEMENT LLC 2,743,603 13,938,000 7.11%
2 RENAISSANCE TECHNOLOGIES LLC 2,371,129 12,045,000 6.15%
3 BlackRock Institutional Trust Company, N.A. 2,363,336 12,006,000 6.13%
4 Numeric Investors LLC 2,082,843 10,581,000 5.40%
5 VANGUARD GROUP INC 1,896,171 9,633,000 4.91%
6 DIMENSIONAL FUND ADVISORS LP 1,606,779 8,162,000 4.16%
7 BlackRock Fund Advisors 1,555,289 7,901,000 4.03%
8 THB ASSET MANAGEMENT 1,369,125 6,955,000 3.55%
9 WADDELL & REED FINANCIAL INC 1,241,500 6,307,000 3.22%
10 DRIEHAUS CAPITAL MANAGEMENT LLC 1,204,665 6,120,000 3.12%
11 PERRITT CAPITAL MANAGEMENT INC 1,034,143 5,253,000 2.68%
12 STATE STREET CORP 1,022,518 5,199,000 2.65%
13 NORTHERN TRUST CORP 881,841 4,480,000 2.29%
14 GSA CAPITAL PARTNERS LLP 864,777 4,393,000 2.24%
15 WELLINGTON MANAGEMENT GROUP LLP 840,000 4,268,000 2.18%
16 MCKINLEY CAPITAL MANAGEMENT LLC 809,085 4,110,000 2.10%
17 RICE HALL JAMES & ASSOCIATES, LLC 788,663 4,006,000 2.04%
18 KESTREL INVESTMENT MANAGEMENT CORP 648,450 3,294,000 1.68%
19 D. E. Shaw & Co., Inc. 603,140 3,064,000 1.56%
20 MILLENNIUM MANAGEMENT LLC 540,182 2,744,000 1.40%
21 TFS CAPITAL LLC 498,336 2,532,000 1.29%
22 TWO SIGMA ADVISERS, LP 497,472 2,527,000 1.29%
23 CONNORS INVESTOR SERVICES INC 491,900 2,499,000 1.27%
24 ALGERT GLOBAL LLC 488,694 2,483,000 1.27%
25 GEODE CAPITAL MANAGEMENT, LLC 482,157 2,449,000 1.25%
26 TWO SIGMA INVESTMENTS, LP 421,409 2,141,000 1.09%
27 Cowen Prime Services LLC 409,000 2,078,000 1.06%
28 ROYCE & ASSOCIATES LP 403,500 2,050,000 1.05%
29 Bank of New York Mellon Corp 403,153 2,048,000 1.04%
30 Informed Momentum Co LLC 394,918 2,006,000 1.02%
31 MORGAN STANLEY 383,488 1,948,000 0.99%
32 PERKINS CAPITAL MANAGEMENT INC 311,839 1,584,000 0.81%
33 WASHINGTON CAPITAL MANAGEMENT, INC 296,163 1,505,000 0.77%
34 GLOBEFLEX CAPITAL L P 261,500 1,328,000 0.68%
35 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 252,500 1,283,000 0.65%
36 HighTower Advisors, LLC 239,180 1,215,000 0.62%
37 KORNITZER CAPITAL MANAGEMENT INC /KS 238,700 1,213,000 0.62%
38 BRIDGEWAY CAPITAL MANAGEMENT, LLC 234,832 1,193,000 0.61%
39 AQR CAPITAL MANAGEMENT LLC 228,449 1,160,000 0.59%
40 BLACKROCK ADVISORS LLC 222,447 1,130,000 0.58%
41 JPMORGAN CHASE & CO 216,547 1,100,000 0.56%
42 Timpani Capital Management LLC 211,909 1,076,000 0.55%
43 ESSEX INVESTMENT MANAGEMENT CO LLC 205,351 1,043,000 0.53%
44 BlackRock Investment Management, LLC 201,976 1,026,000 0.52%
45 TIAA CREF INVESTMENT MANAGEMENT LLC 194,141 986,000 0.50%
46 Penbrook Management LLC 156,906 797,000 0.41%
47 RUSSELL FRANK CO/ 137,800 714,000 0.36%
48 BOGLE INVESTMENT MANAGEMENT L P /DE/ 140,643 714,000 0.36%
49 WHITE PINE CAPITAL LLC 131,025 666,000 0.34%
50 PARAMETRIC PORTFOLIO ASSOCIATES LLC 124,442 632,000 0.32%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.