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

Institutional Holders (2015Q1)
Portfolio Summary: 182 Institutional holders with a total value of $826,674,339.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PARNASSUS INVESTMENTS, LLC 2,649,218 127,030,000 15.37%
2 VANGUARD GROUP INC 2,011,055 96,430,000 11.66%
3 BlackRock Fund Advisors 1,749,832 83,904,000 10.15%
4 DUFF & PHELPS INVESTMENT MANAGEMENT CO 800,000 38,360,000 4.64%
5 BlackRock Institutional Trust Company, N.A. 694,580 33,305,000 4.03%
6 DIMENSIONAL FUND ADVISORS LP 622,902 29,868,000 3.61%
7 STATE STREET CORP 603,914 28,961,000 3.50%
8 GABELLI FUNDS LLC 468,000 22,441,000 2.71%
9 Bank of New York Mellon Corp 381,713 18,302,000 2.21%
10 Invesco Ltd. 359,258 17,226,000 2.08%
11 NORTHERN TRUST CORP 323,269 15,501,000 1.88%
12 HENNESSY ADVISORS INC 307,951 14,766,000 1.79%
13 FRANKLIN RESOURCES INC 300,000 14,385,000 1.74%
14 JPMORGAN CHASE & CO 289,608 13,887,000 1.68%
15 NORGES BANK 271,763 13,031,000 1.58%
16 BANK OF AMERICA CORP /DE/ 259,563 12,446,000 1.51%
17 OLD REPUBLIC INTERNATIONAL CORP 249,500 11,964,000 1.45%
18 Fisher Asset Management, LLC 245,762 11,784,000 1.43%
19 PHILADELPHIA TRUST CO 196,761 9,434,000 1.14%
20 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 185,039 8,873,000 1.07%
21 PRINCIPAL FINANCIAL GROUP INC 173,566 8,322,000 1.01%
22 FIRST TRUST ADVISORS LP 171,247 8,211,000 0.99%
23 GEODE CAPITAL MANAGEMENT, LLC 165,474 7,934,000 0.96%
24 BLACKROCK ADVISORS LLC 161,654 7,751,000 0.94%
25 CITADEL ADVISORS LLC 160,415 7,692,000 0.93%
26 ACADIA TRUST NA 160,222 7,683,000 0.93%
27 AMERIPRISE FINANCIAL INC 135,310 6,488,000 0.78%
28 Clear Harbor Asset Management, LLC 124,991 5,993,000 0.72%
29 Global X Management CO LLC 121,224 5,813,000 0.70%
30 TIAA CREF INVESTMENT MANAGEMENT LLC 115,348 5,531,000 0.67%
31 MANUFACTURERS LIFE INSURANCE COMPANY, THE 103,204 4,948,000 0.60%
32 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 95,270 4,900,000 0.59%
33 BlackRock Investment Management, LLC 100,215 4,805,000 0.58%
34 PARAMETRIC PORTFOLIO ASSOCIATES LLC 96,202 4,613,000 0.56%
35 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 77,311 3,707,000 0.45%
36 Legal & General Group Plc 76,430 3,666,000 0.44%
37 PRUDENTIAL FINANCIAL INC 61,289 2,939,000 0.36%
38 ANALYTIC INVESTORS, LLC 59,207 2,839,000 0.34%
39 Piermont Capital Management Inc. 56,777 2,722,000 0.33%
40 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 53,500 2,565,000 0.31%
41 NEW YORK STATE COMMON RETIREMENT FUND 52,670 2,526,000 0.31%
42 PUBLIC SECTOR PENSION INVESTMENT BOARD 51,263 2,458,000 0.30%
43 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 49,666 2,381,000 0.29%
44 TEACHERS ADVISORS, LLC 49,333 2,366,000 0.29%
45 RHUMBLINE ADVISERS 47,991 2,301,000 0.28%
46 DEUTSCHE BANK AG\ 47,896 2,295,000 0.28%
47 VOYA INVESTMENT MANAGEMENT LLC 47,441 2,275,000 0.28%
48 Robeco Schweiz AG 47,000 2,253,000 0.27%
49 MORGAN STANLEY 45,086 2,162,000 0.26%
50 ALLIANCEBERNSTEIN L.P. 44,876 2,152,000 0.26%
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.