NEXTERA ENERGY INC and NISOURCE INC moved almost identically (−12.46% vs −12.80%), yet NEE moved the XLU 8.4× 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 −4.32 pt move · cell size = points contributed · color = direction, intensity = return
NEE−0.8 pts(−12.5%)
CEG+0.6 pts(+15.9%)
SO−0.3 pts
PCG−0.3 pts(−24.4%)
D−0.3 pts(−12.9%)
SRE−0.3 pts(−13.8%)
EIX−0.3 pts
DUK−0.2 pts(−7.2%)
NRG−0.2 pts(−22.3%)
AEP−0.2 pts
ETR−0.2 pts(−10.0%)
EXC−0.2 pts
DTE−0.2 pts
XEL−0.1 pts(−8.3%)
PEG−0.1 pts(−10.7%)
CNP−0.1 pts
ATO
ES−0.1 pts(−12.2%)
WEC−0.1 pts(−9.7%)
CMS−0.1 pts(−12.9%)
AEE−0.1 pts(−9.9%)
LNT−0.1 pts(−13.4%)
NI−0.1 pts
ED−0.1 pts
FE−0.1 pts
VST+0.1 pts
PPL
PNW
Concentration curve
cumulative share of the −4.32 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−30%−20%−10%0%+10%
From −27.21% (EIX) to +15.91% (CEG). Equal-weight, the XLU would be −9.40% vs the actual −9.46%; the gap is what cap weighting did.
By sector
point contribution · sums to −4.32 pts
-31
−4.3
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
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Utilities · Select Sector
What moved the market
3M · OCT 9, 2026
−9.46%
−4.3 pts · closed 41.40
3 of 31 rose · 28 fell
CEG+15.9%
+0.6
VST+2.1%
+0.1
AES+2.3%
+0.0
SRE−13.8%
−0.3
D−12.9%
−0.3
PCG−24.4%
−0.3
SO−10.0%
−0.3
NEE−12.5%
−0.8
Broad selloff · NEE led at −0.81 ptsWMTMT.COM
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