CHEVRON CORP and DIAMONDBACK ENERGY INC moved almost identically (+0.20% vs +0.23%), yet CVX moved the XLE 2.9× 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 −0.15 pt move · cell size = points contributed · color = direction, intensity = return
VLO−0.1 pts(−2.2%)
MPC−0.1 pts(−1.8%)
XOM+0.1 pts(+0.3%)
PSX−0.0 pts(−1.3%)
DVN−0.0 pts(−1.3%)
CVX+0.0 pts(+0.2%)
KMI+0.0 pts(+0.7%)
WMB+0.0 pts
BKR+0.0 pts
TRGP−0.0 pts(−0.6%)
OKE−0.0 pts(−0.5%)
TPL+0.0 pts
EOG−0.0 pts
EXE−0.0 pts
APA+0.0 pts
OXY−0.0 pts
FANG
EQT
Concentration curve
cumulative share of the −0.15 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−2.50%−1.50%−0.50%+0.50%
From −2.24% (VLO) to +0.97% (TPL). Equal-weight, the XLE would be −0.23% vs the actual −0.23%; the gap is what cap weighting did.
By sector
point contribution · sums to −0.15 pts
-21
−0.1
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
Share this move
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Energy · Select Sector
What moved the market
1D · OCT 9, 2026
−0.23%
−0.1 pts · closed 65.09
8 of 21 rose · 13 fell
XOM+0.3%
+0.1
CVX+0.2%
+0.0
KMI+0.7%
+0.0
WMB+0.5%
+0.0
BKR+0.7%
+0.0
TRGP−0.6%
−0.0
DVN−1.3%
−0.0
PSX−1.3%
−0.0
MPC−1.8%
−0.1
VLO−2.2%
−0.1
3 stocks drove 100%+ of the decline: VLO, MPC, PSXWMTMT.COM
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