Dark
Light
System
Security
SPOK HLDGS INC COM
SPOK HLDGS INC COM. Institutional holdings reported to the SEC.

Institutional Holders (2016Q4)
Portfolio Summary: 123 Institutional holders with a total value of $340,970,300.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BlackRock Fund Advisors 2,618,570 54,335,000 15.94%
2 VANGUARD GROUP INC 2,199,556 45,641,000 13.39%
3 RENAISSANCE TECHNOLOGIES LLC 1,575,800 32,698,000 9.59%
4 DIMENSIONAL FUND ADVISORS LP 1,486,593 30,847,000 9.05%
5 BlackRock Institutional Trust Company, N.A. 681,565 14,142,000 4.15%
6 STATE STREET CORP 623,498 12,934,000 3.79%
7 Bank of New York Mellon Corp 547,940 11,369,000 3.33%
8 Numeric Investors LLC 494,620 10,263,000 3.01%
9 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 350,855 7,280,000 2.14%
10 NORTHERN TRUST CORP 274,468 5,696,000 1.67%
11 MORGAN STANLEY 269,187 5,585,000 1.64%
12 AMERICAN CENTURY COMPANIES INC 251,981 5,229,000 1.53%
13 LSV ASSET MANAGEMENT 246,995 5,125,000 1.50%
14 GEODE CAPITAL MANAGEMENT, LLC 242,524 5,031,000 1.48%
15 BRIDGEWAY CAPITAL MANAGEMENT, LLC 229,964 4,772,000 1.40%
16 MACKENZIE FINANCIAL CORP 168,032 3,487,000 1.02%
17 PRINCIPAL FINANCIAL GROUP INC 159,224 3,304,000 0.97%
18 HighTower Advisors, LLC 150,305 3,115,000 0.91%
19 WELLS FARGO & COMPANY/MN 147,108 3,052,000 0.90%
20 Invesco Ltd. 137,401 2,851,000 0.84%
21 AMERIPRISE FINANCIAL INC 131,797 2,736,000 0.80%
22 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 123,092 2,555,000 0.75%
23 JPMORGAN CHASE & CO 118,018 2,448,000 0.72%
24 BlackRock Investment Management, LLC 117,836 2,445,000 0.72%
25 PARAMETRIC PORTFOLIO ASSOCIATES LLC 113,656 2,358,000 0.69%
26 ALLIANCEBERNSTEIN L.P. 106,423 2,208,000 0.65%
27 CREDIT SUISSE AG/ 105,113 2,180,000 0.64%
28 Piermont Capital Management Inc. 100,659 2,089,000 0.61%
29 QS Investors, LLC 98,800 2,050,000 0.60%
30 Foundry Partners, LLC 95,205 1,976,000 0.58%
31 AQR CAPITAL MANAGEMENT LLC 94,224 1,955,000 0.57%
32 GOLDMAN SACHS GROUP INC 92,516 1,920,000 0.56%
33 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 89,700 1,861,000 0.55%
34 Spark Investment Management LLC 86,400 1,792,000 0.53%
35 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 80,039 1,661,000 0.49%
36 ALAMBIC INVESTMENT MANAGEMENT, L.P. 79,720 1,654,000 0.49%
37 PANAGORA ASSET MANAGEMENT INC 79,145 1,642,000 0.48%
38 RUSSELL INVESTMENTS GROUP, LTD. 77,205 1,637,000 0.48%
39 Euclidean Technologies Management, LLC 74,989 1,556,000 0.46%
40 Connor, Clark & Lunn Investment Management Ltd. 71,525 1,484,000 0.44%
41 GUGGENHEIM CAPITAL LLC 71,218 1,477,000 0.43%
42 MARTINGALE ASSET MANAGEMENT L P 69,808 1,449,000 0.42%
43 ACADIAN ASSET MANAGEMENT LLC 67,901 1,408,000 0.41%
44 Aperio Group, LLC 65,482 1,359,000 0.40%
45 PRUDENTIAL FINANCIAL INC 62,447 1,296,000 0.38%
46 ROYAL BANK OF CANADA 60,916 1,264,000 0.37%
47 TIAA CREF INVESTMENT MANAGEMENT LLC 59,520 1,235,000 0.36%
48 Nationwide Fund Advisors 57,995 1,203,000 0.35%
49 BlackRock Group LTD 48,680 1,010,000 0.30%
50 BANK OF AMERICA CORP /DE/ 45,436 943,000 0.28%
Page 1 of 3

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.