24 members · detractors first · 3Y · residual 5845.1bp exceeds 60bp gate
The XLB fell 36.81% (−28.79 pts) over three years, but 17 of 24 members went the other way. DOW and LYB dragged the tape lower, accounting for 23% of the decline.
DOW INC and ALBEMARLE CORP moved almost identically (−34.69% vs −33.18%), yet DOW moved the XLB 4.9× 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 −28.79 pt move · cell size = points contributed · color = direction, intensity = return
DOW−3.4 pts(−34.7%)
STLD+3.0 pts(+132.3%)
NEM+2.4 pts(+251.6%)
SHW+2.4 pts(+27.6%)
ECL+2.2 pts(+70.9%)
CRH+2.1 pts(+58.6%)
LYB−2.0 pts(−22.3%)
NUE+1.8 pts(+66.0%)
FCX+1.8 pts(+113.2%)
IP+1.7 pts(+2.2%)
APD+1.4 pts(+6.0%)
LIN+1.4 pts(+32.3%)
MOS−1.1 pts
IFF+0.8 pts(+37.5%)
ALB−0.7 pts
PKG+0.7 pts
BALL+0.6 pts
VMC+0.5 pts
AVY−0.5 pts
CF−0.5 pts
MLM+0.4 pts
SW
PPG
AMCR
Concentration curve
cumulative share of the −28.79 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−50%+50%+150%+250%
From −39.31% (MOS) to +251.57% (NEM). Equal-weight, the XLB would be +37.89% vs the actual −36.81%; the gap is what cap weighting did.
By sector
point contribution · sums to −28.79 pts
-24
+14.7
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
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Materials · Select Sector
What moved the market
3Y · OCT 9, 2026
−36.81%
−28.8 pts · closed 49.42
17 of 24 rose · 7 fell
STLD+132.3%
+3.0
NEM+251.6%
+2.4
SHW+27.6%
+2.4
ECL+70.9%
+2.2
CRH+58.6%
+2.1
AVY−3.5%
−0.5
ALB−33.2%
−0.7
MOS−39.3%
−1.1
LYB−22.3%
−2.0
DOW−34.7%
−3.4
DOW sank a split tape · 17 of 24 went the other wayWMTMT.COM
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