CATERPILLAR INC and NORDSON CORP moved almost identically (+40.33% vs +37.29%), yet CAT moved the XLI 21.3× 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 +14.13 pt move · cell size = points contributed · color = direction, intensity = return
CAT+2.9 pts(+40.3%)
GEV+2.4 pts(+54.0%)
FDX+1.5 pts(+56.2%)
DE+1.4 pts(+34.1%)
ETN+1.3 pts(+35.7%)
BA−1.1 pts(−12.3%)
PWR+1.1 pts(+67.4%)
JCI+0.9 pts(+32.2%)
UNP+0.8 pts(+21.6%)
VRT+0.7 pts
CSX+0.7 pts
TT+0.7 pts
FIX+0.6 pts
URI+0.6 pts
HONA
TDG−0.6 pts(−16.7%)
EMR+0.5 pts(+22.9%)
GWW+0.5 pts
FAST+0.5 pts
NOC−0.5 pts
UBER−0.5 pts
ADP+0.4 pts
LHX−0.4 pts
WAB
GE
CPRT
AXON
RTX
XYL
PH
PNR
ODFL
EFX
OTIS
UAL
CTAS
ITW
EME
BR
ROK
IEX
VRSK
CMI
NDSN
UPS
RSG
DAL
Concentration curve
cumulative share of the +14.13 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−50%−25%0%+25%+50%+75%
From −49.33% (PNR) to +84.04% (FIX). Equal-weight, the XLI would be +8.31% vs the actual +9.11%; the gap is what cap weighting did.
By sector
point contribution · sums to +14.13 pts
-83
+14.1
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
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Industrials · Select Sector
What moved the market
YTD · OCT 9, 2026
+9.11%
+14.1 pts · closed 169.25
50 of 83 rose · 33 fell
CAT+40.3%
+2.9
GEV+54.0%
+2.4
FDX+56.2%
+1.5
DE+34.1%
+1.4
ETN+35.7%
+1.3
UBER−12.5%
−0.5
NOC−15.0%
−0.5
TDG−16.7%
−0.6
HONA−28.3%
−0.6
BA−12.3%
−1.1
Mixed tape · top 3 drove 48% of the gainWMTMT.COM
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