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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 2026-10-06.

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)
+0.83% med -0.06pp 80 / 45
HALO 99/100 · 99% wt
HALO Growth 100 (EW)
+0.55% med -0.16pp 60 / 39
AEI 34/34
Agentic Ecosystem Index (EW)
+1.19% med -0.24pp 24 / 10
EUROAI 61/65 · 94% wt
Euro-AI Sovereign 50 (EW)
+0.14% med +0.33pp 35 / 26
AW40 38/40 · 95% wt
Agentic Winners 40 (EW)
+0.17% med +0.13pp 24 / 14

S&P 500 sectors

XLK 72/72
Technology Select Sector
+0.53% med +0.25pp 50 / 22
XLF 76/76
Financial Select Sector
+0.24% med -0.02pp 49 / 27
XLV 59/59
Health Care Select Sector
-0.17% med -0.29pp 21 / 38
XLE 21/21
Energy Select Sector
+0.47% med -0.18pp 15 / 6
XLI 80/80
Industrial Select Sector
+0.87% med -0.34pp 54 / 26
XLP 36/36
Consumer Staples Select Sector
+0.94% med -0.06pp 28 / 8
XLY 48/48
Consumer Discretionary Select Sector
+1.18% med +0.20pp 35 / 13
XLU 31/31
Utilities Select Sector
+2.98% med -1.11pp 31 / 0
XLB 26/26
Materials Select Sector
+0.46% med +0.06pp 16 / 9
XLRE 31/31
Real Estate Select Sector
+1.06% med -0.33pp 30 / 1
XLC 23/23
Communication Services Select Sector
+0.04% med -0.04pp 11 / 11

Nasdaq-100 cuts

QTEC 45/45
First Trust Nasdaq-100 Technology
+0.42% med -0.20pp 27 / 18
QQXT 56/56
First Trust Nasdaq-100 Ex-Technology
+0.78% med -0.35pp 35 / 20
QQEW 49/49
First Trust Nasdaq-100 Equal Weight
+0.08% med +0.06pp 25 / 23
QTOP 31/31
iShares Nasdaq-100 Top 30
+0.37% med -0.03pp 21 / 10

Tech & thematics

IGV 110/110
iShares Expanded Tech-Software
+1.31% med -1.31pp 53 / 53
SMH 25/25
VanEck Semiconductor
-0.22% med +0.35pp 13 / 12
XSD 43/43
SPDR S&P Semiconductor (EW)
+1.09% med -0.88pp 26 / 16
AIQ 66/66
Global X AI & Technology
+0.30% med +0.13pp 41 / 25
CIBR 41/41
First Trust Nasdaq Cybersecurity
+2.00% med -1.22pp 28 / 13
DTCR 20/20
Global X Data Center & Digital Infra
+1.39% med -0.09pp 13 / 7
WTAI 47/48 · 77% wt
WisdomTree AI & Innovation
+0.02% med +0.64pp 31 / 15
QTUM 62/63 · 76% wt
Defiance Quantum
+0.63% med -0.50pp 34 / 27
ARKK 42/42
ARK Innovation
-2.47% med +1.53pp 16 / 25

Global

IXN 87/124 · 81% wt
iShares Global Tech
+0.05% med +0.74pp 62 / 25

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 2026-10-06

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 2026-10-06.

Which sector shows the widest breadth divergence today?

As of 2026-10-06, ARKK (ARK Innovation) shows the widest gap between its median constituent and the ETF itself: median +1.53pp versus the ETF's -2.47%, with 16 advancers against 25 decliners.

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

As of 2026-10-06, 1 ETF show improving breadth (advance/decline rising under flat or soft price), led by IXC, and 4 show weakening breadth (advance/decline falling under firm price), led by IXP.

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.