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

Institutional Holders (2016Q1)
Portfolio Summary: 195 Institutional holders with a total value of $881,662,829.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 VANGUARD GROUP INC 2,222,753 119,695,000 13.58%
2 BlackRock Fund Advisors 1,748,087 94,134,000 10.68%
3 PARNASSUS INVESTMENTS, LLC 1,035,400 55,756,000 6.32%
4 DIMENSIONAL FUND ADVISORS LP 815,373 43,908,000 4.98%
5 DUFF & PHELPS INVESTMENT MANAGEMENT CO 800,000 43,080,000 4.89%
6 BlackRock Institutional Trust Company, N.A. 692,411 37,286,000 4.23%
7 STATE STREET CORP 589,585 31,750,000 3.60%
8 GABELLI FUNDS LLC 465,000 25,040,000 2.84%
9 Bank of New York Mellon Corp 445,098 23,968,000 2.72%
10 Invesco Ltd. 428,838 23,093,000 2.62%
11 NORGES BANK 426,376 22,960,000 2.60%
12 JPMORGAN CHASE & CO 343,168 18,481,000 2.10%
13 NORTHERN TRUST CORP 314,874 16,956,000 1.92%
14 OLD REPUBLIC INTERNATIONAL CORP 263,300 14,179,000 1.61%
15 Fisher Asset Management, LLC 231,582 11,996,000 1.36%
16 FIRST TRUST ADVISORS LP 211,753 11,403,000 1.29%
17 HENNESSY ADVISORS INC 205,786 11,082,000 1.26%
18 AMERIPRISE FINANCIAL INC 196,862 10,601,000 1.20%
19 PRINCIPAL FINANCIAL GROUP INC 191,849 10,331,000 1.17%
20 GEODE CAPITAL MANAGEMENT, LLC 186,638 10,050,000 1.14%
21 BANK OF AMERICA CORP /DE/ 184,769 9,949,000 1.13%
22 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 176,880 9,525,000 1.08%
23 RENAISSANCE TECHNOLOGIES LLC 175,600 9,456,000 1.07%
24 BLACKROCK ADVISORS LLC 156,934 8,451,000 0.96%
25 ACADIA TRUST NA 146,157 7,871,000 0.89%
26 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 144,665 7,791,000 0.88%
27 PARAMETRIC PORTFOLIO ASSOCIATES LLC 140,523 7,567,000 0.86%
28 Robeco Institutional Asset Management B.V. 125,642 6,768,000 0.77%
29 BlackRock Investment Management, LLC 114,595 6,171,000 0.70%
30 Global X Management CO LLC 100,994 5,439,000 0.62%
31 TIAA CREF INVESTMENT MANAGEMENT LLC 99,126 5,338,000 0.61%
32 Clear Harbor Asset Management, LLC 95,053 5,119,000 0.58%
33 CITADEL ADVISORS LLC 88,986 4,792,000 0.54%
34 RUSSELL FRANK CO/ 86,131 4,638,000 0.53%
35 MORGAN STANLEY 83,973 4,521,000 0.51%
36 Legal & General Group Plc 81,650 4,398,000 0.50%
37 Robeco Schweiz AG 80,500 4,359,000 0.49%
38 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 77,311 4,163,000 0.47%
39 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 74,400 4,006,000 0.45%
40 ANALYTIC INVESTORS, LLC 72,662 3,913,000 0.44%
41 PRUDENTIAL FINANCIAL INC 66,329 3,572,000 0.41%
42 UBS Group AG 62,074 3,343,000 0.38%
43 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 58,049 3,126,000 0.35%
44 MILLENNIUM MANAGEMENT LLC 57,414 3,092,000 0.35%
45 AXA S.A. 56,800 3,059,000 0.35%
46 GOLDMAN SACHS GROUP INC 55,957 3,013,000 0.34%
47 RHUMBLINE ADVISERS 53,966 2,906,000 0.33%
48 CITIGROUP INC 53,927 2,904,000 0.33%
49 Piermont Capital Management Inc. 52,596 2,832,000 0.32%
50 TEACHERS ADVISORS, LLC 49,607 2,671,000 0.30%
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.