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 2026-08-14.

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

Closelook indices

RUBIN 124/125 · 99% wt

Rubin Build-Out 100 (EW)

+1.09% med -0.96pp 63 / 60

HALO 99/100 · 99% wt

HALO Growth 100 (EW)

+0.01% med -0.06pp 44 / 53

AEI 34/34

Agentic Ecosystem Index (EW)

+3.19% med -4.47pp 11 / 23

EUROAI 61/65 · 94% wt

Euro-AI Sovereign 50 (EW)

+0.71% med -0.66pp 31 / 29

AW40 38/40 · 95% wt

Agentic Winners 40 (EW)

+3.81% med -5.04pp 10 / 28

S&P 500 sectors

XLK 72/72

Technology Select Sector

-0.40% med +0.04pp 30 / 42

XLF 76/76

Financial Select Sector

-0.17% med +0.25pp 40 / 35

XLV 59/59

Health Care Select Sector

-0.60% med +0.17pp 21 / 38

XLE 21/21

Energy Select Sector

+1.39% med +0.09pp 19 / 2

XLI 80/80

Industrial Select Sector

+0.39% med -0.46pp 35 / 44

XLP 36/36

Consumer Staples Select Sector

+0.10% med +0.15pp 21 / 14

XLY 48/48

Consumer Discretionary Select Sector

-0.21% med -0.05pp 20 / 27

XLU 31/31

Utilities Select Sector

+0.61% med -0.04pp 26 / 4

XLB 26/26

Materials Select Sector

+0.44% med -0.56pp 12 / 14

XLRE 31/31

Real Estate Select Sector

+0.33% med -0.37pp 13 / 16

XLC 23/23

Communication Services Select Sector

+0.36% med +0.18pp 12 / 9

Nasdaq-100 cuts

QTEC 45/45

First Trust Nasdaq-100 Technology

-0.13% med +0.02pp 20 / 25

QQXT 56/56

First Trust Nasdaq-100 Ex-Technology

+0.02% med -0.02pp 26 / 28

QQEW 49/49

First Trust Nasdaq-100 Equal Weight

-0.44% med +0.13pp 17 / 31

QTOP 31/31

iShares Nasdaq-100 Top 30

-0.13% med +0.00pp 10 / 21

Tech & thematics

IGV 110/110

iShares Expanded Tech-Software

-2.07% med +0.10pp 27 / 80

SMH 25/25

VanEck Semiconductor

-0.22% med +0.54pp 14 / 11

XSD 43/43

SPDR S&P Semiconductor (EW)

+1.72% med -0.49pp 32 / 11

AIQ 66/66

Global X AI & Technology

-0.65% med -0.29pp 21 / 44

CIBR 41/41

First Trust Nasdaq Cybersecurity

-2.54% med +0.97pp 8 / 33

DTCR 20/20

Global X Data Center & Digital Infra

+0.96% med +0.37pp 14 / 6

WTAI 47/48 · 77% wt

WisdomTree AI & Innovation

-0.53% med -0.05pp 13 / 33

QTUM 62/63 · 76% wt

Defiance Quantum

+0.28% med -0.35pp 29 / 33

ARKK 42/42

ARK Innovation

-1.80% med +0.92pp 11 / 30

Global

IXN 87/124 · 81% wt

iShares Global Tech

-0.51% med -0.11pp 34 / 53

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 2026-08-14

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 — Closelook indices, S&P 500 sectors, Nasdaq-100 cuts, tech & thematics, and global — with closes through 2026-08-14.

Which sector shows the widest breadth divergence today?

As of 2026-08-14, AW40 (Agentic Winners 40 (EW)) shows the widest gap between its median constituent and the ETF itself: median -5.04pp versus the ETF's +3.81%, with 10 advancers against 28 decliners.

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

As of 2026-08-14, 4 ETFs show improving breadth (advance/decline rising under flat or soft price), led by XLC, and 7 show weakening breadth (advance/decline falling under firm price), led by XLRE.

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 Closelook data lake — coverage is shown per ETF card.