Mariner
NWE icon

Mariner’s NorthWestern Energy NWE Stock Holding History

Mariner’s Portfolio NWE Stock Details NWE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.3M Sell
19,690
-12,600
-39% -$853K ﹤0.01% 1779
2025
Q4 		$2.08M Buy
32,290
+14,596
+82% +$924K ﹤0.01% 1483
2025
Q3 		$1.04M Buy
17,694
+308
+2% +$17K ﹤0.01% 1875
2025
Q2 		$892K Sell
17,386
-634
-4% -$35K ﹤0.01% 1883
2025
Q1 		$1.04M Buy
18,020
+2,270
+14% +$123K ﹤0.01% 1667
2024
Q4 		$842K Buy
15,750
+3,381
+27% +$184K ﹤0.01% 1775
2024
Q3 		$708K Buy
12,369
+369
+3% +$19.7K ﹤0.01% 1871
2024
Q2 		$601K Buy
12,000
+5,710
+91% +$289K ﹤0.01% 1911
2024
Q1 		$320K Sell
6,290
-1,135
-15% -$55.4K ﹤0.01% 2385
2023
Q4 		$378K Buy
7,425
+2,017
+37% +$101K ﹤0.01% 2150
2023
Q3 		$260K Sell
5,408
-2,159
-29% -$115K ﹤0.01% 2276
2023
Q2 		$429K Buy
7,567
+623
+9% +$36.4K ﹤0.01% 1852
2023
Q1 		$402K Buy
6,944
+1,962
+39% +$112K ﹤0.01% 1834
2022
Q4 		$296K Buy
4,982
+266
+6% +$14.5K ﹤0.01% 2044
2022
Q3 		$232K Buy
+4,716
New +$259K ﹤0.01% 1957
2019
Q3 		– Sell
-3,847
Closed -$278K – 934
2019
Q2 		$278K Buy
+3,847
New +$273K ﹤0.01% 912

Other funds holding NWE

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Mariner's NWE Position: Q1 2026 in Review

Mariner reduced its NorthWestern Energy (NWE) stake by 39% in Q1 2026, selling an estimated $853K and leaving 19,690 shares worth $1.3M. The position accounts for ﹤0.01% of the portfolio, ranked #1779.

Mariner first reported a position in NWE in Q2 2019 and has held it in 16 quarters since. The position peaked at $2.08M in Q4 2025. 370 funds tracked by Wall St. Rank hold NWE as of Q1 2026.

  • Mariner held 19,690 shares of NorthWestern Energy worth $1.3M as of Q1 2026.
  • Mariner sold 12,600 NorthWestern Energy shares in Q1 2026, an estimated $853K.
  • NorthWestern Energy made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #1779 holding.
  • Mariner first reported a position in NorthWestern Energy in Q2 2019 and has held it in 16 quarters since.
  • Mariner's NorthWestern Energy position peaked at $2.08M in Q4 2025.
  • 370 funds tracked by Wall St. Rank held NorthWestern Energy as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.