CATERPILLAR INC and SOUTHWEST AIRLINES CO moved almost identically (+1.48% vs +1.52%), yet CAT moved the XLI 17.6× 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 +1.95 pt move · cell size = points contributed · color = direction, intensity = return
CAT+0.2 pts(+1.5%)
GEV+0.1 pts(+1.7%)
GE+0.1 pts(+1.2%)
ETN+0.1 pts(+2.1%)
PH+0.1 pts(+2.6%)
VRT+0.1 pts
HWM+0.1 pts(+2.1%)
LMT+0.1 pts(+1.8%)
UNP+0.1 pts
DE+0.1 pts
UBER−0.1 pts(−1.1%)
RTX+0.1 pts(+0.6%)
JCI+0.0 pts
FIX+0.0 pts
PWR+0.0 pts
GD
GWW+0.0 pts(+2.3%)
NOC+0.0 pts(+1.8%)
EMR+0.0 pts(+1.4%)
HON+0.0 pts(+1.8%)
TT+0.0 pts(+1.2%)
CHRW+0.0 pts
HONA+0.0 pts
UPS
FDX+0.0 pts
EME+0.0 pts
FAST+0.0 pts
CSX+0.0 pts
AME
CMI
ITW
NSC
BA
FERG
IR
GNRC
UAL
TDG
LDOS
AXON
XYL
CTAS
DOV
URI
Concentration curve
cumulative share of the +1.95 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−2%0%+2%+4%+6%
From −1.85% (BR) to +6.36% (CHRW). Equal-weight, the XLI would be +1.04% vs the actual +1.09%; the gap is what cap weighting did.
By sector
point contribution · sums to +1.95 pts
-83
+1.9
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUG
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Industrials · Select Sector
What moved the market
1D LIVE · AUG 26, 2026
+1.09%
+1.9 pts · now 180.35
69 of 83 rose · 14 fell
CAT+1.5%
+0.2
GEV+1.7%
+0.1
GE+1.2%
+0.1
ETN+2.1%
+0.1
PH+2.6%
+0.1
AXON−0.7%
−0.0
BR−1.9%
−0.0
UAL−1.1%
−0.0
CPRT−1.7%
−0.0
UBER−1.1%
−0.1
Broad advance · CAT led at +0.18 ptsWMTMT.COM
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