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WHAT MOVED THE MARKET TODAY

Technology · Select Sector

75 stocks · cap-weighted, ETF-derived weights · Oct 9, 2026 close
198.78
−1.03 (−0.52%)
XLK 198.78 · −1.0 pts (−0.52%) 1W
203.86202.08200.30198.52196.75EW +0.85%H 203.09 · 11:00L 197.18 · 14:00
Oct 5Oct 6Oct 7Oct 8Oct 9
30-minute bars · index reconstructed live from member prices
Breadth
32 / 75
stocks fell with the index
Concentration
100%+
of the decline from INTC, NVDA, AMD
Biggest driver
INTC −0.84
INTEL CORP, −12.26%
Biggest offset
MSFT +0.77
MICROSOFT CORP, +3.39%

What drove it

75 members · detractors first · 1W · residual 5.8bp within 60bp gate

The XLK fell 0.52% (−1.03 pts) on the week, but 43 of 75 members went the other way. INTC and NVDA dragged the tape lower, contributing more than the entire move.

Read the latest market-close note: Goldman and Microsoft Push the Dow to a Large Gain While Telecoms Sink Communication Services

+3.4 pts from 42 gainers−4.5 pts from 33 losers
net −1.0 pts · losers outweigh gainers 1.3 to 1
Stock
Points
Return
XLKsum of all 75 stocks
−1.0
100%
−0.52%
INTCINTEL CORP
−0.8
82%
−12.26%
NVDANVIDIA CORP
−0.6
62%
−2.00%
AMDADVANCED MICRO DEVICES
−0.4
43%
−4.07%
LRCXLAM RESEARCH CORP
−0.4
41%
−8.24%
AMATAPPLIED MATERIALS INC
−0.3
31%
−6.11%
MUMICRON TECHNOLOGY INC
−0.3
29%
−4.27%
SNDKSANDISK CORP
−0.2
21%
−8.03%
KLACKLA CORP
−0.2
17%
−5.47%
STXSEAGATE TECHNOLOGY HOLDINGS
−0.2
16%
−7.77%
QCOMQUALCOMM INC
−0.1
12%
−5.07%
TXNTEXAS INSTRUMENTS INC
−0.1
12%
−3.42%
TERTERADYNE INC
−0.1
9%
−11.21%
WDCWESTERN DIGITAL CORP
−0.1
7%
−4.34%
ADIANALOG DEVICES INC
−0.1
7%
−2.63%
GLWCORNING INC
−0.1
7%
−4.58%
45 othersclick to expand the full index
+0.1
13%
·
PTCPTC INC
+0.1
−6%
+35.01%
HPEHEWLETT PACKARD ENTERPRISE
+0.1
−6%
+5.90%
ACNACCENTURE PLC CL A
+0.1
−7%
+5.01%
NOWSERVICENOW INC
+0.1
−7%
+4.81%
INTUINTUIT INC
+0.1
−7%
+8.20%
DELLDELL TECHNOLOGIES C
+0.1
−8%
+4.21%
CIENCIENA CORP
+0.1
−9%
+14.92%
FTNTFORTINET INC
+0.1
−9%
+7.63%
ANETARISTA NETWORKS INC
+0.1
−11%
+4.54%
PANWPALO ALTO NETWORKS INC
+0.1
−12%
+3.85%
AVGOBROADCOM INC
+0.2
−20%
+1.80%
AAPLAPPLE INC
+0.3
−26%
+0.88%
CSCOCISCO SYSTEMS INC
+0.3
−27%
+5.52%
PLTRPALANTIR TECHNOLOGIES INC A
+0.5
−51%
+10.75%
MSFTMICROSOFT CORP
+0.8
−75%
+3.39%
Cap weighting, illustrated

MICROSOFT CORP and ZEBRA TECHNOLOGIES CORP CL A moved almost identically (+3.39% vs +3.01%), yet MSFT moved the XLK 76.7× 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 −1.03 pt move · cell size = points contributed · color = direction, intensity = return
INTC−0.8 pts(−12.3%)
MSFT+0.8 pts(+3.4%)
NVDA−0.6 pts(−2.0%)
PLTR+0.5 pts(+10.8%)
AMD−0.4 pts(−4.1%)
LRCX−0.4 pts(−8.2%)
AMAT−0.3 pts(−6.1%)
MU−0.3 pts
CSCO+0.3 pts(+5.5%)
AAPL+0.3 pts(+0.9%)
SNDK−0.2 pts(−8.0%)
AVGO+0.2 pts(+1.8%)
KLAC−0.2 pts(−5.5%)
STX−0.2 pts
QCOM−0.1 pts
TXN−0.1 pts
PANW+0.1 pts
ANET+0.1 pts
TER
FTNT
CIEN
DELL
ADI−0.1 pts
GLW−0.1 pts
HPE
PTC
ADSK
P
CRM
DDOG
SNPS
ON

Concentration curve

cumulative share of the −1.03 pt move · sorted by contribution
0%50%100%19385675stocks:3 stocks = 186%100% covered at 2

When they drove it

cumulative points through the period
0INTC −0.84NVDA −0.63AMD −0.44MSFT +0.77PLTR +0.52CSCO +0.28Oct 2Oct 9

Breadth

member returns, this period
−20%−10%0%+10%+20%+30%
From −12.26% (INTC) to +35.01% (PTC). Equal-weight, the XLK would be +0.85% vs the actual −0.52%; the gap is what cap weighting did.

By sector

point contribution · sums to −1.03 pts
-75
−1.0

The year, session by session

every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT

Share this move

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