NORTHWEST NATURAL HOLDING CO (NWN) Top Institutional Shareholders
NORTHWEST NATURAL HOLDING CO (NWN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $1.66B in NWN holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of NWN tracked by InsiderSet, reporting ownership valued at approximately $339.71M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $311.94M, representing an estimated loss of -8.17% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed NWN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in NORTHWEST NATURAL HOLDING CO (NWN).
This page ranks the largest institutional NWN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
315
Total Reported Value
$1.66B
Largest Holder
Blackrock, Inc.
Largest Position
$339.71M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
100
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 6,383,093 | $339,708,196 | $311,941,755 | -$27,766,441 | -8.17% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,628,040 | $139,864,289 | $128,432,315 | -$11,431,974 | -8.17% | |
| Vanguard Capital Management Llc | 0.00% | 1,832,517 | $97,526,555 | $89,555,106 | -$7,971,449 | -8.17% | |
| State Street Corp | 0.00% | 1,605,211 | $85,429,329 | $78,446,662 | -$6,982,667 | -8.17% | |
| Vaughan Nelson Investment Management, L.P. | 0.64% | 1,189,201 | $63,289,277 | $58,116,253 | -$5,173,024 | -8.17% | |
| Geode Capital Management, Llc | 0.00% | 1,032,239 | $54,946,750 | $50,445,520 | -$4,501,230 | -8.19% | |
| Morgan Stanley | 0.00% | 831,355 | $44,244,808 | $40,628,319 | -$3,616,489 | -8.17% | |
| Invesco Ltd. | 0.01% | 799,977 | $42,574,777 | $39,094,876 | -$3,479,901 | -8.17% | |
| First Trust Advisors Lp | 0.03% | 755,910 | $40,229,523 | $36,941,322 | -$3,288,201 | -8.17% | |
| Dimensional Fund Advisors Lp | 0.01% | 743,512 | $39,570,706 | $36,335,431 | -$3,235,275 | -8.18% | |
| Goldman Sachs Group Inc | 0.00% | 656,172 | $34,921,474 | $32,067,126 | -$2,854,348 | -8.17% | |
| Duff & Phelps Investment Management Co | 0.34% | 613,090 | $32,628,650 | $29,961,708 | -$2,666,942 | -8.17% | |
| William Blair Investment Management, Llc | 0.10% | 594,204 | $31,623,537 | $29,038,749 | -$2,584,788 | -8.17% | |
| Charles Schwab Investment Management Inc | 0.00% | 583,009 | $31,027,739 | $28,491,650 | -$2,536,089 | -8.17% | |
| Gabelli Funds Llc | 0.19% | 520,000 | $27,674,400 | $25,412,400 | -$2,262,000 | -8.17% | |
| Nuveen, Llc | 0.01% | 502,520 | $26,744,115 | $24,558,152 | -$2,185,963 | -8.17% | |
| Bank Of New York Mellon Corp | 0.00% | 476,484 | $25,358,481 | $23,285,773 | -$2,072,708 | -8.17% | |
| Northern Trust Corp | 0.00% | 456,313 | $24,284,978 | $22,300,016 | -$1,984,962 | -8.17% | |
| Victory Capital Management Inc | 0.01% | 417,945 | $22,243,033 | $20,424,972 | -$1,818,061 | -8.17% | |
| Metlife Investment Management, Llc | 0.10% | 370,701 | $19,728,707 | $18,116,158 | -$1,612,549 | -8.17% | |
| Gamco Investors, Inc. Et Al | 0.19% | 363,700 | $19,356,114 | $17,774,019 | -$1,582,095 | -8.17% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.02% | 311,567 | $16,581,596 | $15,226,279 | -$1,355,317 | -8.17% | |
| Two Sigma Investments, Lp | 0.01% | 273,209 | $14,540,183 | $13,351,724 | -$1,188,459 | -8.17% | |
| Hotchkis & Wiley Capital Management Llc | 0.04% | 269,965 | $14,367,537 | $13,193,190 | -$1,174,347 | -8.17% | |
| Vanguard Fiduciary Trust Co | 0.00% | 267,416 | $14,231,880 | $13,068,620 | -$1,163,260 | -8.17% | |
| Prudential Financial Inc | 0.02% | 241,642 | $12,860,187 | $11,809,045 | -$1,051,142 | -8.17% | |
| Legal & General Group Plc | 0.00% | 241,348 | $12,844,542 | $11,794,677 | -$1,049,865 | -8.17% | |
| Principal Financial Group Inc | 0.01% | 238,699 | $12,703,561 | $11,665,220 | -$1,038,341 | -8.17% | |
| American Century Companies Inc | 0.01% | 223,057 | $11,871,094 | $10,900,796 | -$970,298 | -8.17% | |
| Aqr Capital Management Llc | 0.01% | 222,324 | $11,832,107 | $10,864,974 | -$967,133 | -8.17% | |
| Edgestream Partners, L.P. | 0.35% | 201,660 | $10,732,345 | $9,855,124 | -$877,221 | -8.17% | |
| Bank Of America Corp | 0.00% | 191,461 | $10,189,554 | $9,356,699 | -$832,855 | -8.17% | |
| Jupiter Asset Management Ltd | 0.05% | 188,390 | $10,026,116 | $9,206,619 | -$819,497 | -8.17% | |
| Baird Financial Group, Inc. | 0.01% | 172,740 | $9,193,223 | $8,441,804 | -$751,419 | -8.17% | |
| Dana Investment Advisors, Inc. | 0.26% | 166,685 | $8,870,976 | $8,145,896 | -$725,080 | -8.17% | |
| Ameriprise Financial Inc | 0.00% | 160,223 | $8,527,071 | $7,830,098 | -$696,973 | -8.17% | |
| Franklin Resources Inc | 0.00% | 154,521 | $8,223,608 | $7,551,441 | -$672,167 | -8.17% | |
| Public Sector Pension Investment Board | 0.02% | 148,485 | $7,902,372 | $7,256,462 | -$645,910 | -8.17% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 142,193 | $7,567,513 | $6,948,972 | -$618,541 | -8.17% | |
| Exchange Traded Concepts, Llc | 0.06% | 141,996 | $7,557,027 | $6,939,345 | -$617,682 | -8.17% | |
| Proshare Advisors Llc | 0.01% | 130,453 | $6,942,708 | $6,375,238 | -$567,470 | -8.17% | |
| Ubs Group Ag | 0.00% | 129,677 | $6,901,411 | $6,337,315 | -$564,096 | -8.17% | |
| Rhumbline Advisers | 0.01% | 122,388 | $6,513,469 | $5,981,102 | -$532,367 | -8.17% | |
| Millennium Management Llc | 0.00% | 107,940 | $5,744,567 | $5,275,028 | -$469,539 | -8.17% | |
| Qube Research & Technologies Ltd | 0.01% | 97,248 | $5,175,539 | $4,752,510 | -$423,029 | -8.17% | |
| Voya Investment Management Llc | 0.01% | 96,956 | $5,159,999 | $4,738,240 | -$421,759 | -8.17% | |
| Point72 Asset Management, L.P. | 0.01% | 95,053 | $5,058,721 | $4,645,240 | -$413,481 | -8.17% | |
| Commonwealth Of Pennsylvania Public School Empls Retrmt Sys | 0.02% | 90,648 | $4,824,286 | $4,429,968 | -$394,318 | -8.17% | |
| Grace & White Inc | 0.85% | 90,064 | $4,793,206 | $4,401,428 | -$391,778 | -8.17% | |
| Jane Street Group, Llc | 0.00% | 85,198 | $4,534,238 | $4,163,626 | -$370,612 | -8.17% |
Frequently asked questions about NWN
Who owns the most NWN stock?
The largest holders of NWN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for NORTHWEST NATURAL HOLDING CO (NWN).
Is NWN widely held by superinvestors?
Many widely followed stocks like NWN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly NWN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.