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Lab · Sector Dispersion

Breadth vs the sector.

Most screens show the sector's price. These show what its members are doing underneath — is the move broad, or carried by a few mega-caps? Median constituent vs the index, advancers vs decliners, how many names beat the index, and a cumulative advance/decline line that tends to turn before price. 40 ETFs & index cuts · closes through 2026-10-09.

What changed below the surface · 21-day

Where the constituents' advance/decline is pulling away from the ETF's price — the early read, before the headline reflects it.

Improving — breadth rising under flat/soft price

Weakening — breadth falling under firm price

Closelooknet indices

RUBIN 129/130 · 99% wt
Rubin Build-Out 100 (EW)
+0.34% med +0.06pp 69 / 60
HALO 99/100 · 99% wt
HALO Growth 100 (EW)
+0.86% med +0.09pp 71 / 27
AEI 34/34
Agentic Ecosystem Index (EW)
+4.20% med -0.38pp 32 / 2
EUROAI 61/65 · 94% wt
Euro-AI Sovereign 50 (EW)
+1.20% med -0.36pp 42 / 19
AW40 38/40 · 95% wt
Agentic Winners 40 (EW)
+1.52% med -0.48pp 27 / 11

S&P 500 sectors

XLK 72/72
Technology Select Sector
+0.51% med +0.18pp 46 / 26
XLF 76/76
Financial Select Sector
+0.92% med -1.06pp 32 / 44
XLV 59/59
Health Care Select Sector
+1.58% med -0.43pp 53 / 6
XLE 21/21
Energy Select Sector
-0.25% med +0.18pp 8 / 13
XLI 80/80
Industrial Select Sector
+0.50% med -0.12pp 55 / 25
XLP 36/36
Consumer Staples Select Sector
+0.01% med -0.06pp 17 / 19
XLY 48/48
Consumer Discretionary Select Sector
+1.02% med -0.75pp 29 / 19
XLU 31/31
Utilities Select Sector
+0.83% med -0.39pp 28 / 3
XLB 26/26
Materials Select Sector
+0.32% med -0.71pp 11 / 15
XLRE 31/31
Real Estate Select Sector
+1.86% med -1.01pp 25 / 6
XLC 23/23
Communication Services Select Sector
-1.51% med -0.27pp 7 / 14

Nasdaq-100 cuts

QTEC 45/45
First Trust Nasdaq-100 Technology
+0.71% med -0.32pp 26 / 19
QQXT 56/56
First Trust Nasdaq-100 Ex-Technology
+0.88% med -0.37pp 37 / 17
QQEW 49/49
First Trust Nasdaq-100 Equal Weight
+0.61% med +0.33pp 32 / 16
QTOP 31/31
iShares Nasdaq-100 Top 30
+0.28% med -0.21pp 16 / 15

Tech & thematics

IGV 110/110
iShares Expanded Tech-Software
+2.81% med -1.28pp 85 / 23
SMH 25/25
VanEck Semiconductor
-0.65% med +0.10pp 9 / 16
XSD 43/43
SPDR S&P Semiconductor (EW)
-0.05% med -0.24pp 18 / 24
AIQ 66/66
Global X AI & Technology
+1.52% med -0.39pp 49 / 17
CIBR 41/41
First Trust Nasdaq Cybersecurity
+3.58% med -0.46pp 40 / 1
DTCR 20/20
Global X Data Center & Digital Infra
+3.02% med -2.75pp 12 / 8
WTAI 47/48 · 77% wt
WisdomTree AI & Innovation
+1.28% med -0.32pp 36 / 10
QTUM 62/63 · 76% wt
Defiance Quantum
+0.78% med -0.21pp 39 / 23
ARKK 42/42
ARK Innovation
+2.31% med -0.34pp 32 / 10

Global

IXN 87/124 · 81% wt
iShares Global Tech
+0.50% med +0.30pp 58 / 29

Computed across the constituents we cover in our data lake (coverage shown per card). A/D line = cumulative daily advancers minus decliners. Decision-support, not investment advice.

FAQ · from the current data · as of 2026-10-09

Quick answers

What does this dispersion tool measure?

For each ETF or index it compares the median constituent return to the ETF/benchmark return, counts advancers versus decliners, and tracks a cumulative advance/decline line that tends to lead price — showing whether a move is broad-based or carried by a handful of mega-caps.

How many ETFs and index cuts are tracked, and as of when?

40 ETFs and index cuts across five groups — Closelooknet indices, S&P 500 sectors, Nasdaq-100 cuts, tech & thematics, and global — with closes through 2026-10-09.

Which sector shows the widest breadth divergence today?

As of 2026-10-09, DTCR (Global X Data Center & Digital Infra) shows the widest gap between its median constituent and the ETF itself: median -2.75pp versus the ETF's +3.02%, with 12 advancers against 8 decliners.

Which sectors are improving or weakening on a 21-day view?

As of 2026-10-09, 2 ETFs show improving breadth (advance/decline rising under flat or soft price), led by XLI, and 10 show weakening breadth (advance/decline falling under firm price), led by XLY.

How is the advance/decline line computed?

It is the cumulative daily count of constituent advancers minus decliners, computed across the constituents held in the Closelooknet data lake — coverage is shown per ETF card.