Dark
Light
System
Security
NORTHWEST NAT GAS CO
NORTHWEST NAT GAS CO. Institutional holdings reported to the SEC.

Institutional Holders (2016Q4)
Portfolio Summary: 224 Institutional holders with a total value of $1,093,434,406.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 VANGUARD GROUP INC 2,583,426 154,490,000 14.13%
2 BlackRock Fund Advisors 2,293,535 137,153,000 12.54%
3 DIMENSIONAL FUND ADVISORS LP 847,350 50,672,000 4.63%
4 DUFF & PHELPS INVESTMENT MANAGEMENT CO 800,000 47,840,000 4.38%
5 BlackRock Institutional Trust Company, N.A. 760,990 45,507,000 4.16%
6 STATE STREET CORP 667,480 39,918,000 3.65%
7 Invesco Ltd. 539,397 32,256,000 2.95%
8 Bank of New York Mellon Corp 495,660 29,640,000 2.71%
9 JPMORGAN CHASE & CO 479,679 28,685,000 2.62%
10 GABELLI FUNDS LLC 451,000 26,970,000 2.47%
11 NORGES BANK 410,576 24,552,000 2.25%
12 PARNASSUS INVESTMENTS, LLC 397,500 23,771,000 2.17%
13 NORTHERN TRUST CORP 337,697 20,193,000 1.85%
14 RENAISSANCE TECHNOLOGIES LLC 331,900 19,848,000 1.82%
15 Robeco Institutional Asset Management B.V. 283,876 16,977,000 1.55%
16 FIRST TRUST ADVISORS LP 272,794 16,313,000 1.49%
17 OLD REPUBLIC INTERNATIONAL CORP 263,300 15,745,000 1.44%
18 GEODE CAPITAL MANAGEMENT, LLC 247,180 14,781,000 1.35%
19 HENNESSY ADVISORS INC 236,286 14,130,000 1.29%
20 Fisher Asset Management, LLC 234,458 14,021,000 1.28%
21 MORGAN STANLEY 228,245 13,650,000 1.25%
22 PRINCIPAL FINANCIAL GROUP INC 225,643 13,493,000 1.23%
23 AMERIPRISE FINANCIAL INC 225,440 13,481,000 1.23%
24 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 156,333 9,349,000 0.86%
25 BlackRock Investment Management, LLC 149,762 8,956,000 0.82%
26 CAMDEN NATIONAL BANK 139,965 8,370,000 0.77%
27 Legal & General Group Plc 139,250 8,328,000 0.76%
28 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 137,962 8,250,000 0.75%
29 Global X Management CO LLC 126,251 7,550,000 0.69%
30 BESSEMER GROUP INC 123,951 7,413,000 0.68%
31 Numeric Investors LLC 113,642 6,796,000 0.62%
32 PARAMETRIC PORTFOLIO ASSOCIATES LLC 112,745 6,742,000 0.62%
33 TIAA CREF INVESTMENT MANAGEMENT LLC 108,534 6,490,000 0.59%
34 ProShare Advisors LLC 104,512 6,250,000 0.57%
35 WELLS FARGO & COMPANY/MN 104,350 6,239,000 0.57%
36 BLACKROCK ADVISORS LLC 104,047 6,222,000 0.57%
37 BANK OF AMERICA CORP /DE/ 103,664 6,199,000 0.57%
38 AQR CAPITAL MANAGEMENT LLC 103,388 6,182,000 0.57%
39 MARTINGALE ASSET MANAGEMENT L P 95,408 5,706,000 0.52%
40 Clear Harbor Asset Management, LLC 90,793 5,429,000 0.50%
41 Robeco Schweiz AG 90,000 5,418,000 0.50%
42 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 80,111 4,791,000 0.44%
43 GOLDMAN SACHS GROUP INC 71,251 4,261,000 0.39%
44 DEUTSCHE BANK AG\ 69,181 4,136,000 0.38%
45 TWO SIGMA ADVISERS, LP 63,298 3,785,000 0.35%
46 RUSSELL INVESTMENTS GROUP, LTD. 62,438 3,758,000 0.34%
47 BlackRock Group LTD 61,753 3,692,000 0.34%
48 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 60,100 3,594,000 0.33%
49 CITIGROUP INC 58,613 3,505,000 0.32%
50 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 56,078 3,353,000 0.31%
Page 1 of 5

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.