TESLA INC and LULULEMON ATHLETICA INC moved almost identically (+2.05% vs +1.96%), yet TSLA moved the XLY 42.2× 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 +1.15 pt move · cell size = points contributed · color = direction, intensity = return
AMZN+0.9 pts(+3.3%)
TSLA+0.4 pts(+2.1%)
HD−0.1 pts(−1.6%)
SBUX−0.1 pts(−2.6%)
DASH
LOW−0.1 pts(−1.5%)
CMG−0.0 pts
MCD
ABNB+0.0 pts
MAR+0.0 pts
HLT+0.0 pts
AZO
EXPE
GM
F
DRI
BBY
CCL
ULTA
DHI
Concentration curve
cumulative share of the +1.15 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−4%−2%0%+2%
From −3.37% (CMG) to +3.29% (AMZN). Equal-weight, the XLY would be +0.06% vs the actual +1.03%; the gap is what cap weighting did.
By sector
point contribution · sums to +1.15 pts
-46
+1.2
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
Share this move
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Consumer Discretionary · Select Sector
What moved the market
1D · OCT 9, 2026
+1.03%
+1.2 pts · closed 112.86
27 of 46 rose · 19 fell
AMZN+3.3%
+0.9
TSLA+2.1%
+0.4
DASH+2.5%
+0.1
ABNB+1.6%
+0.0
MAR+1.3%
+0.0
MCD−0.7%
−0.0
CMG−3.4%
−0.0
LOW−1.5%
−0.1
SBUX−2.6%
−0.1
HD−1.6%
−0.1
3 stocks drove 100%+ of the gain: AMZN, TSLA, DASHWMTMT.COM
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