5-minute bars · index reconstructed live from member prices
Breadth
13 / 22
stocks fell with the index
Concentration
96%
of the decline from TMUS, T, VZ
Biggest driver
TMUS −0.65
T MOBILE US INC, −13.27%
Biggest offset
GOOGL +0.11
ALPHABET INC CL A, +0.97%
Context
6th pctile
of the past year's sessions by daily move
What drove it
22 members · detractors first · 1D · residual 24.7bp within 60bp gate
The XLC fell 1.53% (−1.71 pts) on the day, but 9 of 22 members went the other way. TMUS and T dragged the tape lower, accounting for 96% of the decline.
APPLOVIN CORP CLASS A and SKYDANCE CORP moved almost identically (−1.10% vs −1.24%), yet APP moved the XLC 4.5× 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 −1.71 pt move · cell size = points contributed · color = direction, intensity = return
TMUS−0.7 pts(−13.3%)
T−0.5 pts(−10.9%)
VZ−0.5 pts(−10.1%)
GOOGL+0.1 pts(+1.0%)
CMCSA−0.1 pts(−2.6%)
CHTR−0.1 pts
TTWO+0.1 pts
GOOG+0.1 pts(+0.9%)
NFLX−0.1 pts(−1.8%)
META−0.1 pts(−0.3%)
RDDT+0.1 pts
APP
DIS+0.0 pts
FOXA
TKO−0.0 pts
ECHO+0.0 pts
LYV−0.0 pts
FOX
Concentration curve
cumulative share of the −1.71 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−14%−10%−6%−2%+2%
From −13.27% (TMUS) to +2.14% (RDDT). Equal-weight, the XLC would be −2.00% vs the actual −1.53%; the gap is what cap weighting did.
By sector
point contribution · sums to −1.71 pts
-22
−1.7
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT
Share this move
pick a view, download it as a 16:9 PNG
Communication Services · Select Sector
What moved the market
1D · OCT 9, 2026
−1.53%
−1.7 pts · closed 110.36
9 of 22 rose · 13 fell
GOOGL+1.0%
+0.1
TTWO+1.9%
+0.1
GOOG+0.9%
+0.1
RDDT+2.1%
+0.1
DIS+1.0%
+0.0
CHTR−5.7%
−0.1
CMCSA−2.6%
−0.1
VZ−10.1%
−0.5
T−10.9%
−0.5
TMUS−13.3%
−0.7
TMUS sank a split tape · 9 of 22 went the other wayWMTMT.COM
view 1 of 6
Cycle through the views and download any of them as a 16:9 PNG sized for X. Pasting the page link on X unfurls a server-rendered card on its own.
www.wmtmt.com/xlc?p=1d
Share on X copies the image to your clipboard and opens the composer; paste to attach it.
What moved the market, in your inbox
The daily note publishes here after every close; the week's story lands in your inbox on Fridays, free. Read the daily notes.
Babylon Burns
WMTMT is built by the founders of Babylon Burns, a letter on markets, macro, and the systems behind them. The numbers live here; the arguments live there. Subscribing below joins the Babylon Burns letter.