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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 2026-10-08.

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)
-2.79% med +0.35pp 10 / 118
HALO 99/100 · 99% wt
HALO Growth 100 (EW)
-0.57% med +0.10pp 38 / 61
AEI 34/34
Agentic Ecosystem Index (EW)
-1.49% med +0.35pp 13 / 21
EUROAI 61/65 · 94% wt
Euro-AI Sovereign 50 (EW)
-1.23% med +0.46pp 15 / 44
AW40 38/40 · 95% wt
Agentic Winners 40 (EW)
+0.57% med +0.13pp 21 / 17

S&P 500 sectors

XLK 72/72
Technology Select Sector
-1.79% med +0.80pp 21 / 51
XLF 76/76
Financial Select Sector
+0.89% med +0.48pp 64 / 12
XLV 59/59
Health Care Select Sector
-0.39% med +0.27pp 29 / 30
XLE 21/21
Energy Select Sector
+2.97% med -0.25pp 21 / 0
XLI 80/80
Industrial Select Sector
+0.33% med +0.55pp 55 / 25
XLP 36/36
Consumer Staples Select Sector
+2.11% med -0.02pp 34 / 2
XLY 48/48
Consumer Discretionary Select Sector
+0.31% med +1.27pp 37 / 11
XLU 31/31
Utilities Select Sector
-0.19% med +0.61pp 21 / 9
XLB 26/26
Materials Select Sector
+0.59% med -0.14pp 19 / 7
XLRE 31/31
Real Estate Select Sector
+0.69% med +0.31pp 24 / 7
XLC 23/23
Communication Services Select Sector
+0.73% med +0.56pp 16 / 5

Nasdaq-100 cuts

QTEC 45/45
First Trust Nasdaq-100 Technology
-1.97% med +1.05pp 11 / 34
QQXT 56/56
First Trust Nasdaq-100 Ex-Technology
+0.45% med +0.83pp 38 / 16
QQEW 49/49
First Trust Nasdaq-100 Equal Weight
-1.04% med +0.99pp 22 / 26
QTOP 31/31
iShares Nasdaq-100 Top 30
-1.54% med +0.82pp 9 / 22

Tech & thematics

IGV 110/110
iShares Expanded Tech-Software
-0.23% med +1.07pp 70 / 36
SMH 25/25
VanEck Semiconductor
-2.84% med -0.33pp 0 / 25
XSD 43/43
SPDR S&P Semiconductor (EW)
-3.68% med +0.47pp 2 / 40
AIQ 66/66
Global X AI & Technology
-1.60% med +1.08pp 31 / 35
CIBR 41/41
First Trust Nasdaq Cybersecurity
-0.35% med +0.25pp 20 / 21
DTCR 20/20
Global X Data Center & Digital Infra
-1.91% med -1.45pp 3 / 17
WTAI 47/48 · 77% wt
WisdomTree AI & Innovation
-3.33% med +2.41pp 16 / 30
QTUM 62/63 · 76% wt
Defiance Quantum
-2.30% med +0.30pp 13 / 48
ARKK 42/42
ARK Innovation
-0.79% med -0.39pp 8 / 33

Global

IXN 87/124 · 81% wt
iShares Global Tech
-2.01% med +1.10pp 27 / 60

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 2026-10-08

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 2026-10-08.

Which sector shows the widest breadth divergence today?

As of 2026-10-08, WTAI (WisdomTree AI & Innovation) shows the widest gap between its median constituent and the ETF itself: median +2.41pp versus the ETF's -3.33%, with 16 advancers against 30 decliners.

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

As of 2026-10-08, 2 ETFs show improving breadth (advance/decline rising under flat or soft price), led by EUROAI, 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.