CONSTELLATION ENERGY and CENTERPOINT ENERGY INC moved almost identically (+1.53% vs +1.58%), yet CEG moved the XLU 3.3× 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 +0.28 pt move · cell size = points contributed · color = direction, intensity = return
CEG+0.0 pts(+1.5%)
SRE+0.0 pts(+1.7%)
VST+0.0 pts(+1.4%)
NRG+0.0 pts(+2.2%)
ETR+0.0 pts(+1.0%)
AEP+0.0 pts(+0.7%)
PEG+0.0 pts(+1.1%)
CNP+0.0 pts(+1.6%)
DUK+0.0 pts(+0.4%)
ED+0.0 pts
WEC+0.0 pts(+1.0%)
XEL+0.0 pts(+0.6%)
NEE+0.0 pts(+0.2%)
AEE+0.0 pts(+0.8%)
DTE+0.0 pts
NI+0.0 pts
ATO+0.0 pts
ES+0.0 pts
EVRG+0.0 pts
PCG−0.0 pts
SO+0.0 pts
LNT+0.0 pts
PPL+0.0 pts
PNW+0.0 pts
CMS+0.0 pts
D+0.0 pts
FE+0.0 pts
Concentration curve
cumulative share of the +0.28 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−0.50%0%+0.50%+1.00%+1.50%+2.00%
From −0.41% (PCG) to +2.18% (NRG). Equal-weight, the XLU would be +0.73% vs the actual +0.65%; the gap is what cap weighting did.
By sector
point contribution · sums to +0.28 pts
-31
+0.3
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUG
Share this move
pick a view, download it as a 16:9 PNG
Utilities · Select Sector
What moved the market
1D LIVE · AUG 26, 2026
+0.65%
+0.3 pts · now 43.58
27 of 31 rose · 4 fell
CEG+1.5%
+0.0
SRE+1.7%
+0.0
VST+1.4%
+0.0
NRG+2.2%
+0.0
ETR+1.0%
+0.0
AWK−0.0%
−0.0
EXC−0.0%
−0.0
EIX−0.1%
−0.0
PCG−0.4%
−0.0
Broad advance · CEG led at +0.04 ptsWMTMT.COM
view 1 of 6
Cycle through the views and download any of them as a 16:9 PNG sized for X. Pasting the page link on X unfurls a server-rendered card on its own.
www.wmtmt.com/xlu?p=1d
Share on X copies the image to your clipboard and opens the composer; paste to attach it.
What moved the market, in your inbox
The daily note publishes here after every close; the week's story lands in your inbox on Fridays, free. Read the daily notes.
Babylon Burns
WMTMT is built by the founders of Babylon Burns, a letter on markets, macro, and the systems behind them. The numbers live here; the arguments live there. Subscribing below joins the Babylon Burns letter.