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

Institutional Holders (2015Q3)
Portfolio Summary: 173 Institutional holders with a total value of $773,268,859.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PARNASSUS INVESTMENTS, LLC 2,686,303 118,174,000 15.28%
2 VANGUARD GROUP INC 2,078,897 95,297,000 12.32%
3 BlackRock Fund Advisors 1,607,475 73,687,000 9.53%
4 DUFF & PHELPS INVESTMENT MANAGEMENT CO 800,000 36,672,000 4.74%
5 DIMENSIONAL FUND ADVISORS LP 685,578 31,426,000 4.06%
6 BlackRock Institutional Trust Company, N.A. 682,972 31,307,000 4.05%
7 STATE STREET CORP 612,749 28,092,000 3.63%
8 GABELLI FUNDS LLC 472,000 21,636,000 2.80%
9 Bank of New York Mellon Corp 430,479 19,732,000 2.55%
10 NORGES BANK 426,376 19,545,000 2.53%
11 JPMORGAN CHASE & CO 325,980 14,944,000 1.93%
12 Invesco Ltd. 319,173 14,630,000 1.89%
13 NORTHERN TRUST CORP 297,463 13,636,000 1.76%
14 BANK OF AMERICA CORP /DE/ 265,248 12,160,000 1.57%
15 OLD REPUBLIC INTERNATIONAL CORP 275,500 12,155,000 1.57%
16 HENNESSY ADVISORS INC 256,951 11,779,000 1.52%
17 Fisher Asset Management, LLC 231,937 10,632,000 1.37%
18 FIRST TRUST ADVISORS LP 197,431 9,050,000 1.17%
19 PRINCIPAL FINANCIAL GROUP INC 172,249 7,896,000 1.02%
20 GEODE CAPITAL MANAGEMENT, LLC 167,700 7,687,000 0.99%
21 BLACKROCK ADVISORS LLC 161,646 7,410,000 0.96%
22 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 160,524 7,358,000 0.95%
23 ACADIA TRUST NA 158,149 7,249,000 0.94%
24 PHILADELPHIA TRUST CO 147,186 6,747,000 0.87%
25 PARAMETRIC PORTFOLIO ASSOCIATES LLC 138,763 6,361,000 0.82%
26 AMERIPRISE FINANCIAL INC 138,241 6,337,000 0.82%
27 Global X Management CO LLC 135,207 6,198,000 0.80%
28 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 133,538 6,122,000 0.79%
29 BlackRock Investment Management, LLC 111,983 5,133,000 0.66%
30 Clear Harbor Asset Management, LLC 107,872 4,945,000 0.64%
31 TIAA CREF INVESTMENT MANAGEMENT LLC 94,587 4,336,000 0.56%
32 MANUFACTURERS LIFE INSURANCE COMPANY, THE 91,700 4,203,000 0.54%
33 Legal & General Group Plc 88,615 4,058,000 0.52%
34 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 77,311 3,544,000 0.46%
35 DEUTSCHE BANK AG\ 69,796 3,198,000 0.41%
36 RUSSELL FRANK CO/ 67,556 3,097,000 0.40%
37 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 66,100 3,030,000 0.39%
38 PRUDENTIAL FINANCIAL INC 63,189 2,897,000 0.37%
39 CITADEL ADVISORS LLC 62,087 2,846,000 0.37%
40 Robeco Schweiz AG 54,100 2,427,000 0.31%
41 ANALYTIC INVESTORS, LLC 52,107 2,388,000 0.31%
42 VOYA INVESTMENT MANAGEMENT LLC 51,371 2,355,000 0.30%
43 MORGAN STANLEY 50,861 2,331,000 0.30%
44 TEACHERS ADVISORS, LLC 49,889 2,287,000 0.30%
45 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 49,820 2,284,000 0.30%
46 RHUMBLINE ADVISERS 48,166 2,208,000 0.29%
47 RENAISSANCE TECHNOLOGIES LLC 43,700 2,003,000 0.26%
48 BlackRock Group LTD 43,406 1,989,000 0.26%
49 GOLDMAN SACHS GROUP INC 42,119 1,931,000 0.25%
50 GAMCO INVESTORS, INC. ET AL 39,100 1,792,000 0.23%
Page 1 of 4

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.