MICROSOFT CORP and JABIL INC moved almost identically (+2.38% vs +2.38%), yet MSFT moved the XLK 53.1× 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 +1.00 pt move · cell size = points contributed · color = direction, intensity = return
MSFT+0.5 pts(+2.4%)
AAPL−0.3 pts(−1.1%)
PLTR+0.3 pts(+5.2%)
AMD−0.2 pts(−2.0%)
PANW+0.2 pts(+5.1%)
NVDA−0.2 pts(−0.5%)
CSCO+0.2 pts(+3.0%)
INTC−0.1 pts
CRWD+0.1 pts(+4.6%)
ORCL+0.1 pts
DDOG+0.1 pts(+7.1%)
ANET+0.1 pts(+2.7%)
MU−0.1 pts
LITE
APH+0.1 pts
TXN−0.0 pts
SNDK−0.0 pts
DELL+0.0 pts
AVGO
CIEN
HPE
LRCX−0.0 pts
HPQ−0.0 pts
AMAT
COHR
STX
FLEX
KLAC
TWLO
SWKS
FFIV
FICO
AKAM
Concentration curve
cumulative share of the +1.00 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−8%−4%0%+4%
From −6.91% (HPQ) to +7.11% (DDOG). Equal-weight, the XLK would be +1.01% vs the actual +0.51%; the gap is what cap weighting did.
By sector
point contribution · sums to +1.00 pts
-73
+1.0
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
Share this move
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Technology · Select Sector
What moved the market
1D · OCT 9, 2026
+0.51%
+1.0 pts · closed 198.78
49 of 73 rose · 24 fell
MSFT+2.4%
+0.5
PLTR+5.2%
+0.3
PANW+5.1%
+0.2
CSCO+3.0%
+0.2
CRWD+4.6%
+0.1
MU−0.7%
−0.1
INTC−2.2%
−0.1
NVDA−0.5%
−0.2
AMD−2.0%
−0.2
AAPL−1.1%
−0.3
3 stocks drove 98% of the gain: MSFT, PLTR, PANWWMTMT.COM
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