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NORTHWEST NAT GAS CO
NORTHWEST NAT GAS CO. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 183 Institutional holders with a total value of $874,421,803.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 PARNASSUS INVESTMENTS, LLC 2,691,177 136,200,000 15.58%
2 VANGUARD GROUP INC 2,126,593 107,626,000 12.31%
3 BlackRock Fund Advisors 1,722,129 87,157,000 9.97%
4 DUFF & PHELPS INVESTMENT MANAGEMENT CO 800,000 40,488,000 4.63%
5 DIMENSIONAL FUND ADVISORS LP 731,996 37,047,000 4.24%
6 BlackRock Institutional Trust Company, N.A. 692,141 35,029,000 4.01%
7 STATE STREET CORP 629,934 31,877,000 3.65%
8 GABELLI FUNDS LLC 472,000 23,888,000 2.73%
9 NORGES BANK 426,376 21,579,000 2.47%
10 Bank of New York Mellon Corp 418,662 21,189,000 2.42%
11 Invesco Ltd. 395,523 20,018,000 2.29%
12 JPMORGAN CHASE & CO 327,795 16,589,000 1.90%
13 NORTHERN TRUST CORP 310,995 15,740,000 1.80%
14 OLD REPUBLIC INTERNATIONAL CORP 263,300 13,326,000 1.52%
15 BANK OF AMERICA CORP /DE/ 233,384 11,811,000 1.35%
16 Fisher Asset Management, LLC 232,567 11,770,000 1.35%
17 HENNESSY ADVISORS INC 223,700 11,321,000 1.29%
18 PRINCIPAL FINANCIAL GROUP INC 186,840 9,456,000 1.08%
19 GEODE CAPITAL MANAGEMENT, LLC 168,695 8,537,000 0.98%
20 FIRST TRUST ADVISORS LP 168,672 8,536,000 0.98%
21 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 166,294 8,416,000 0.96%
22 BLACKROCK ADVISORS LLC 156,125 7,901,000 0.90%
23 ACADIA TRUST NA 153,411 7,764,000 0.89%
24 AMERIPRISE FINANCIAL INC 144,890 7,336,000 0.84%
25 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 141,809 7,177,000 0.82%
26 PARAMETRIC PORTFOLIO ASSOCIATES LLC 137,902 6,979,000 0.80%
27 Global X Management CO LLC 134,426 6,803,000 0.78%
28 BlackRock Investment Management, LLC 112,697 5,704,000 0.65%
29 Clear Harbor Asset Management, LLC 102,222 5,173,000 0.59%
30 RENAISSANCE TECHNOLOGIES LLC 93,500 4,732,000 0.54%
31 TIAA CREF INVESTMENT MANAGEMENT LLC 92,631 4,688,000 0.54%
32 Legal & General Group Plc 89,478 4,530,000 0.52%
33 DEUTSCHE BANK AG\ 89,453 4,526,000 0.52%
34 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 77,311 3,913,000 0.45%
35 Robeco Schweiz AG 75,500 3,885,000 0.44%
36 Robeco Institutional Asset Management B.V. 74,136 3,752,000 0.43%
37 RUSSELL FRANK CO/ 67,140 3,455,000 0.40%
38 PRUDENTIAL FINANCIAL INC 63,789 3,228,000 0.37%
39 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 62,100 3,143,000 0.36%
40 CITADEL ADVISORS LLC 61,771 3,126,000 0.36%
41 GOLDMAN SACHS GROUP INC 61,689 3,122,000 0.36%
42 MORGAN STANLEY 57,758 2,923,000 0.33%
43 PHILADELPHIA TRUST CO 55,484 2,708,000 0.31%
44 VOYA INVESTMENT MANAGEMENT LLC 51,371 2,600,000 0.30%
45 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 50,700 2,566,000 0.29%
46 TEACHERS ADVISORS, LLC 49,889 2,525,000 0.29%
47 RHUMBLINE ADVISERS 49,151 2,488,000 0.28%
48 MANUFACTURERS LIFE INSURANCE COMPANY, THE 46,700 2,363,000 0.27%
49 ANALYTIC INVESTORS, LLC 45,792 2,317,000 0.26%
50 BlackRock Group LTD 43,733 2,212,000 0.25%
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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.