CATERPILLAR INC and ROLLINS INC moved almost identically (−7.14% vs −6.48%), yet CAT moved the XLI 42.6× 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 −4.80 pt move · cell size = points contributed · color = direction, intensity = return
CAT−1.1 pts(−7.1%)
UBER+0.7 pts(+17.8%)
GEV−0.6 pts(−7.1%)
HONA−0.6 pts(−23.9%)
GE−0.4 pts(−3.3%)
ADP+0.4 pts(+10.9%)
CMI−0.4 pts(−13.1%)
VRT−0.3 pts(−11.1%)
HWM−0.3 pts(−8.3%)
HON−0.3 pts
CARR−0.3 pts
FIX−0.2 pts
AXON+0.2 pts
LHX−0.2 pts
RTX
WM−0.2 pts(−6.6%)
TDG−0.2 pts(−7.3%)
ODFL−0.2 pts
FDX+0.2 pts
LII
UNP
TT−0.2 pts
URI−0.1 pts
UPS−0.1 pts
GWW
ETN
PWR
PH
ROK−0.1 pts
PAYX+0.1 pts
FAST
BR
CHRW
PCAR
CPRT
GD
EXPD
IR
CTAS
FDXF
DAL
J
XYL
NSC
MAS
JCI
VLTO
Concentration curve
cumulative share of the −4.80 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−30%−20%−10%0%+10%+20%
From −28.92% (LII) to +20.95% (BR). Equal-weight, the XLI would be −1.94% vs the actual −2.62%; the gap is what cap weighting did.
By sector
point contribution · sums to −4.80 pts
-83
−4.8
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
1M · AUG 25, 2026
−2.62%
−4.8 pts · closed 178.40
28 of 83 rose · 55 fell
UBER+17.8%
+0.7
ADP+10.9%
+0.4
AXON+16.7%
+0.2
FDX+7.4%
+0.2
UNP+3.5%
+0.2
CMI−13.1%
−0.4
GE−3.3%
−0.4
HONA−23.9%
−0.6
GEV−7.1%
−0.6
CAT−7.1%
−1.1
Mixed tape · top 3 drove 47% of the declineWMTMT.COM
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