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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 2026-09-25.

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 125/126 · 99% wt
Rubin Build-Out 100 (EW)
+1.66% med -0.51pp 99 / 26
HALO 99/100 · 99% wt
HALO Growth 100 (EW)
+0.02% med -0.10pp 46 / 53
AEI 34/34
Agentic Ecosystem Index (EW)
-2.71% med +0.05pp 6 / 28
EUROAI 61/65 · 94% wt
Euro-AI Sovereign 50 (EW)
+0.42% med -0.27pp 35 / 24
AW40 38/40 · 95% wt
Agentic Winners 40 (EW)
-0.74% med -0.02pp 14 / 24

S&P 500 sectors

XLK 72/72
Technology Select Sector
+0.80% med -0.29pp 47 / 25
XLF 76/76
Financial Select Sector
+0.57% med +0.13pp 53 / 23
XLV 59/59
Health Care Select Sector
+0.49% med -0.11pp 40 / 18
XLE 21/21
Energy Select Sector
-0.89% med -0.68pp 5 / 15
XLI 80/80
Industrial Select Sector
+0.95% med -0.26pp 57 / 23
XLP 36/36
Consumer Staples Select Sector
+0.44% med -0.52pp 17 / 19
XLY 48/48
Consumer Discretionary Select Sector
+0.22% med +0.61pp 34 / 14
XLU 31/31
Utilities Select Sector
+0.38% med -0.03pp 28 / 3
XLB 26/26
Materials Select Sector
+0.24% med +0.10pp 16 / 10
XLRE 31/31
Real Estate Select Sector
-0.22% med +0.53pp 21 / 10
XLC 23/23
Communication Services Select Sector
-0.90% med +0.63pp 8 / 14

Nasdaq-100 cuts

QTEC 45/45
First Trust Nasdaq-100 Technology
+0.32% med +0.12pp 28 / 17
QQXT 56/56
First Trust Nasdaq-100 Ex-Technology
+0.46% med -0.13pp 35 / 20
QQEW 49/49
First Trust Nasdaq-100 Equal Weight
+0.77% med -0.46pp 29 / 19
QTOP 31/31
iShares Nasdaq-100 Top 30
+0.34% med +0.03pp 24 / 7

Tech & thematics

IGV 110/110
iShares Expanded Tech-Software
-1.06% med -0.44pp 17 / 90
SMH 25/25
VanEck Semiconductor
+1.01% med +0.28pp 23 / 2
XSD 43/43
SPDR S&P Semiconductor (EW)
+2.67% med +0.08pp 40 / 3
AIQ 66/66
Global X AI & Technology
-0.02% med -0.79pp 24 / 42
CIBR 41/41
First Trust Nasdaq Cybersecurity
-2.17% med +0.96pp 11 / 29
DTCR 20/20
Global X Data Center & Digital Infra
-0.45% med +0.34pp 10 / 10
WTAI 47/48 · 77% wt
WisdomTree AI & Innovation
+0.76% med -1.02pp 21 / 25
QTUM 62/63 · 76% wt
Defiance Quantum
+0.82% med -0.39pp 38 / 24
ARKK 42/42
ARK Innovation
-1.01% med +0.02pp 13 / 29

Global

IXN 87/124 · 81% wt
iShares Global Tech
+1.15% med -0.45pp 57 / 30

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 2026-09-25

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 2026-09-25.

Which sector shows the widest breadth divergence today?

As of 2026-09-25, WTAI (WisdomTree AI & Innovation) shows the widest gap between its median constituent and the ETF itself: median -1.02pp versus the ETF's +0.76%, with 21 advancers against 25 decliners.

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

As of 2026-09-25, 2 ETFs show improving breadth (advance/decline rising under flat or soft price), led by IXC, and 8 show weakening breadth (advance/decline falling under firm price), led by XLC.

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.