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Mattern Capital Management’s CMS Energy CMS Stock Holding History

Mattern Capital Management’s Portfolio CMS Stock Details CMS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$11.5M Sell
150,896
-8,764
-5% -$657K 1.35% 18
2026
Q1 		$12.4M Buy
159,660
+38,952
+32% +$2.89M 1.48% 9
2025
Q4 		$8.44M Buy
120,708
+2,126
+2% +$155K 1% 53
2025
Q3 		$8.69M Buy
118,582
+219
+0.2% +$15.7K 1.02% 47
2025
Q2 		$8.2M Buy
118,363
+1,367
+1% +$97.4K 0.99% 58
2025
Q1 		$8.79M Sell
116,996
-3,925
-3% -$274K 1.12% 47
2024
Q4 		$8.06M Sell
120,921
-2,551
-2% -$176K 1.05% 58
2024
Q3 		$8.72M Buy
123,472
+123
+0.1% +$8.07K 1.1% 51
2024
Q2 		$7.34M Sell
123,349
-117
-0.1% -$7.08K 1.01% 61
2024
Q1 		$7.45M Buy
123,466
+9,696
+9% +$562K 1.01% 65
2023
Q4 		$6.61M Buy
113,770
+3,712
+3% +$207K 0.96% 70
2023
Q3 		$5.85M Buy
110,058
+9,696
+10% +$562K 0.95% 69
2023
Q2 		$5.9M Buy
100,362
+3,731
+4% +$225K 0.96% 71
2023
Q1 		$5.93M Buy
96,631
+3,677
+4% +$226K 1.05% 60
2022
Q4 		$5.89M Buy
92,954
+5,390
+6% +$319K 1.09% 53
2022
Q3 		$5.1M Sell
87,564
-296
-0.3% -$19.9K 1.06% 57
2022
Q2 		$5.93M Sell
87,860
-2,333
-3% -$161K 1.17% 39
2022
Q1 		$6.31M Buy
90,193
+2,238
+3% +$145K 1.13% 40
2021
Q4 		$5.72M Buy
87,955
+5,297
+6% +$325K 1% 64
2021
Q3 		$4.94M Buy
82,658
+4,462
+6% +$278K 0.97% 66
2021
Q2 		$4.62M Buy
78,196
+5,701
+8% +$355K 0.91% 73
2021
Q1 		$4.44M Buy
72,495
+5,929
+9% +$341K 0.96% 71
2020
Q4 		$4.06M Buy
66,566
+425
+0.6% +$26.6K 0.96% 69
2020
Q3 		$4.06M Buy
66,141
+2,906
+5% +$178K 1.06% 63
2020
Q2 		$3.69M Buy
63,235
+7,875
+14% +$456K 1.07% 59
2020
Q1 		$3.25M Buy
55,360
+1,235
+2% +$79K 1.11% 51
2019
Q4 		$3.4M Buy
+54,125
New +$3.37M 0.94% 76

Other funds holding CMS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
DZ Bank
DZ Bank Frankfurt Am Main, Germany $130B AUM 46.38% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Mattern Capital Management's CMS Position: Q2 2026 in Review

Mattern Capital Management reduced its CMS Energy (CMS) stake by 5.5% in Q2 2026, selling an estimated $657K and leaving 150,896 shares worth $11.5M. The position accounts for 1.35% of the portfolio, ranked #18.

Mattern Capital Management first reported a position in CMS in Q4 2019 and has held it in 27 quarters since. The position peaked at $12.4M in Q1 2026. 819 funds tracked by Wall St. Rank hold CMS as of Q2 2026.

  • Mattern Capital Management held 150,896 shares of CMS Energy worth $11.5M as of Q2 2026.
  • Mattern Capital Management sold 8,764 CMS Energy shares in Q2 2026, an estimated $657K.
  • CMS Energy made up 1.35% of Mattern Capital Management's portfolio in Q2 2026, its #18 holding.
  • Mattern Capital Management first reported a position in CMS Energy in Q4 2019 and has held it in 27 quarters since.
  • Mattern Capital Management's CMS Energy position peaked at $12.4M in Q1 2026.
  • 819 funds tracked by Wall St. Rank held CMS Energy as of Q2 2026.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.