NEXTERA ENERGY INC and CMS ENERGY CORP moved almost identically (−10.74% vs −9.35%), yet NEE moved the XLU 10.9× as much. In a cap-weighted index, the bigger company's weight turns the same percentage move into far more points.
Attribution map
slicing the −3.90 pt move · cell size = points contributed · color = direction, intensity = return
NEE−0.8 pts(−10.7%)
NRG−0.5 pts(−38.1%)
VST−0.3 pts(−18.7%)
SRE−0.2 pts(−9.0%)
CEG−0.2 pts(−10.7%)
AEP−0.2 pts(−6.6%)
PEG−0.2 pts
DUK−0.1 pts(−4.2%)
SO−0.1 pts
D+0.1 pts
EXC−0.1 pts(−7.2%)
XEL−0.1 pts(−6.7%)
WEC−0.1 pts(−7.2%)
NI−0.1 pts
CNP−0.1 pts
CMS−0.1 pts
ATO−0.1 pts
PPL−0.1 pts
ES
DTE−0.1 pts
FE−0.0 pts
ED−0.0 pts
AES
LNT
AEE
EIX
Concentration curve
cumulative share of the −3.90 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−40%−30%−20%−10%0%
From −38.07% (NRG) to +7.20% (D). Equal-weight, the XLU would be −6.07% vs the actual −8.26%; the gap is what cap weighting did.
By sector
point contribution · sums to −3.90 pts
-31
−3.6
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUG
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Utilities · Select Sector
What moved the market
6M · AUG 25, 2026
−8.26%
−3.9 pts · closed 43.30
5 of 31 rose · 26 fell
D+7.2%
+0.1
AWK+3.4%
+0.0
EIX+0.6%
+0.0
CEG−10.7%
−0.2
SRE−9.0%
−0.2
VST−18.7%
−0.3
NRG−38.1%
−0.5
NEE−10.7%
−0.8
Broad selloff · NEE led at −0.83 ptsWMTMT.COM
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