There is a long list of 241 institutional holders of NWN within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of NWN by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-NWN table below, the initial column indicates the name of each top institutional holder of NWN, with a link to that fund's top holdings. The next columns indicate the amount of NWN stock held by each of the institutional holders of NWN, followed by the NWN position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
BlackRock Inc.	6,469,129	$251,908	12/31/2023
NWN	6,469,129	$251,908	12/31/2023
Vanguard Group Inc.	4,350,387	$169,404	12/31/2023
NWN	4,350,387	$169,404	12/31/2023
State Street Corp	1,524,339	$59,358	12/31/2023
NWN	1,524,339	$59,358	12/31/2023
Invesco Ltd.	918,495	$35,766	12/31/2023
NWN	918,495	$35,766	12/31/2023
Geode Capital Management LLC	785,418	$30,588	12/31/2023
NWN	785,418	$30,588	12/31/2023
Duff & Phelps Investment Management Co.	779,470	$30,353	12/31/2023
NWN	779,470	$30,353	12/31/2023
Dimensional Fund Advisors LP	735,030	$28,622	12/31/2023
NWN	735,030	$28,622	12/31/2023
Deprince Race & Zollo Inc.	639,150	$24,889	12/31/2023
NWN	639,150	$24,889	12/31/2023
Morgan Stanley	486,750	$18,954	12/31/2023
NWN	486,750	$18,954	12/31/2023
Charles Schwab Investment Management Inc.	465,504	$18,127	12/31/2023
NWN	465,504	$18,127	12/31/2023
Gabelli Funds LLC	448,000	$17,445	12/31/2023
NWN	448,000	$17,445	12/31/2023
Bank of New York Mellon Corp	456,416	$16,988	03/31/2024
NWN	456,416	$16,988	03/31/2024
Nuveen Asset Management LLC	409,627	$15,951	12/31/2023
NWN	409,627	$15,951	12/31/2023
Victory Capital Management Inc.	392,514	$15,284	12/31/2023
NWN	392,514	$15,284	12/31/2023
Northern Trust Corp	384,222	$14,962	12/31/2023
NWN	384,222	$14,962	12/31/2023
JPMorgan Chase & Co.	364,029	$14,175	12/31/2023
NWN	364,029	$14,175	12/31/2023
American Century Companies Inc.	354,506	$13,804	12/31/2023
NWN	354,506	$13,804	12/31/2023
Hotchkis & Wiley Capital Management LLC	298,760	$11,634	12/31/2023
NWN	298,760	$11,634	12/31/2023
Empower Advisory Group LLC	295,433	$11,504	12/31/2023
NWN	295,433	$11,504	12/31/2023
Legal & General Group Plc	267,939	$10,434	12/31/2023
NWN	267,939	$10,434	12/31/2023
Ameriprise Financial Inc.	265,341	$10,332	12/31/2023
NWN	265,341	$10,332	12/31/2023
Goldman Sachs Group Inc.	249,276	$9,707	12/31/2023
NWN	249,276	$9,707	12/31/2023
Mesirow Institutional Investment Management Inc.	242,241	$9,433	12/31/2023
NWN	242,241	$9,433	12/31/2023
Brandywine Global Investment Management LLC	239,000	$9,307	12/31/2023
NWN	239,000	$9,307	12/31/2023
AltraVue Capital LLC	235,740	$9,180	12/31/2023
NWN	235,740	$9,180	12/31/2023
Norges Bank	220,065	$8,569	12/31/2023
NWN	220,065	$8,569	12/31/2023
Russell Investments Group Ltd.	216,836	$8,444	12/31/2023
NWN	216,836	$8,444	12/31/2023
ProShare Advisors LLC	215,173	$8,379	12/31/2023
NWN	215,173	$8,379	12/31/2023
Smith Graham & Co. Investment Advisors LP	212,044	$8,257	12/31/2023
NWN	212,044	$8,257	12/31/2023
Stifel Financial Corp	195,913	$7,629	12/31/2023
NWN	195,913	$7,629	12/31/2023
Cramer Rosenthal Mcglynn LLC	195,592	$7,616	12/31/2023
NWN	195,592	$7,616	12/31/2023
Principal Financial Group Inc.	191,576	$7,460	12/31/2023
NWN	191,576	$7,460	12/31/2023
Qube Research & Technologies Ltd	163,361	$6,361	12/31/2023
NWN	163,361	$6,361	12/31/2023
Deutsche Bank AG	130,633	$5,087	12/31/2023
NWN	130,633	$5,087	12/31/2023
Penn Capital Management Co. Inc.	124,350	$4,842	12/31/2023
NWN	124,350	$4,842	12/31/2023
First Trust Advisors LP	123,401	$4,805	12/31/2023
NWN	123,401	$4,805	12/31/2023
Rhumbline Advisers	122,836	$4,783	12/31/2023
NWN	122,836	$4,783	12/31/2023
Renaissance Technologies LLC	114,600	$4,463	12/31/2023
NWN	114,600	$4,463	12/31/2023
First Washington CORP	114,430	$4,456	12/31/2023
NWN	114,430	$4,456	12/31/2023
State of Wisconsin Investment Board	111,482	$4,341	12/31/2023
NWN	111,482	$4,341	12/31/2023
Gamco Investors INC. ET AL	110,400	$4,299	12/31/2023
NWN	110,400	$4,299	12/31/2023
Dean Investment Associates LLC	102,865	$4,006	12/31/2023
NWN	102,865	$4,006	12/31/2023
Exchange Traded Concepts LLC	100,376	$3,736	03/31/2024
NWN	100,376	$3,736	03/31/2024
Grace & White Inc. NY	99,559	$3,706	03/31/2024
NWN	99,559	$3,706	03/31/2024
Jacobs Levy Equity Management Inc.	88,341	$3,440	12/31/2023
NWN	88,341	$3,440	12/31/2023
UBS Asset Management Americas Inc.	87,938	$3,424	12/31/2023
NWN	87,938	$3,424	12/31/2023
Public Sector Pension Investment Board	76,319	$2,972	12/31/2023
NWN	76,319	$2,972	12/31/2023
Voloridge Investment Management LLC	72,713	$2,831	12/31/2023
NWN	72,713	$2,831	12/31/2023
Tortoise Index Solutions LLC	72,566	$2,826	12/31/2023
NWN	72,566	$2,826	12/31/2023
Swiss National Bank	71,100	$2,769	12/31/2023
NWN	71,100	$2,769	12/31/2023