William Blair Investment Management
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William Blair Investment Management’s Northwest Natural Holdings NWN Stock Holding History

William Blair Investment Management’s Portfolio NWN Stock Details NWN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$23M Sell
469,008
-125,196
-21% -$6.41M 0.07% 231
2026
Q1 		$31.6M Buy
594,204
+19,006
+3% +$942K 0.1% 183
2025
Q4 		$26.9M Buy
+575,198
New +$26.8M 0.08% 223

Other funds holding NWN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VNIM
Vaughan Nelson Investment Management Houston, Texas $11.3B AUM 53% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

William Blair Investment Management's NWN Position: Q2 2026 in Review

William Blair Investment Management reduced its Northwest Natural Holdings (NWN) stake by 21% in Q2 2026, selling an estimated $6.41M and leaving 469,008 shares worth $23M. The position accounts for 0.07% of the portfolio, ranked #231.

William Blair Investment Management first reported a position in NWN in Q4 2025 and has held it in 3 quarters since. The position peaked at $31.6M in Q1 2026. 319 funds tracked by Wall St. Rank hold NWN as of Q2 2026.

  • William Blair Investment Management held 469,008 shares of Northwest Natural Holdings worth $23M as of Q2 2026.
  • William Blair Investment Management sold 125,196 Northwest Natural Holdings shares in Q2 2026, an estimated $6.41M.
  • Northwest Natural Holdings made up 0.07% of William Blair Investment Management's portfolio in Q2 2026, its #231 holding.
  • William Blair Investment Management first reported a position in Northwest Natural Holdings in Q4 2025 and has held it in 3 quarters since.
  • William Blair Investment Management's Northwest Natural Holdings position peaked at $31.6M in Q1 2026.
  • 319 funds tracked by Wall St. Rank held Northwest Natural Holdings as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.