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 2026-08-07.

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)

-0.96% med +1.56pp 77 / 45

HALO 99/100 · 99% wt

HALO Growth 100 (EW)

-0.44% med +1.51pp 73 / 25

AEI 34/34

Agentic Ecosystem Index (EW)

-2.06% med +4.74pp 27 / 7

EUROAI 61/65 · 94% wt

Euro-AI Sovereign 50 (EW)

+1.87% med -1.33pp 38 / 22

AW40 38/40 · 95% wt

Agentic Winners 40 (EW)

-1.63% med +4.14pp 34 / 4

S&P 500 sectors

XLK 72/72

Technology Select Sector

+1.42% med +0.34pp 57 / 15

XLF 76/76

Financial Select Sector

-0.36% med -0.02pp 26 / 50

XLV 59/59

Health Care Select Sector

+0.75% med +0.14pp 46 / 13

XLE 21/21

Energy Select Sector

-1.13% med -0.03pp 4 / 17

XLI 80/80

Industrial Select Sector

+0.23% med +0.24pp 56 / 24

XLP 36/36

Consumer Staples Select Sector

+0.01% med +0.23pp 20 / 16

XLY 48/48

Consumer Discretionary Select Sector

+1.49% med -0.14pp 34 / 14

XLU 31/31

Utilities Select Sector

+0.53% med -0.16pp 21 / 10

XLB 26/26

Materials Select Sector

+1.32% med -0.08pp 19 / 7

XLRE 31/31

Real Estate Select Sector

+0.38% med +0.26pp 26 / 3

XLC 23/23

Communication Services Select Sector

+0.06% med +0.09pp 12 / 10

Nasdaq-100 cuts

QTEC 45/45

First Trust Nasdaq-100 Technology

+1.70% med +0.14pp 36 / 9

QQXT 56/56

First Trust Nasdaq-100 Ex-Technology

+1.49% med -0.87pp 37 / 18

QQEW 49/49

First Trust Nasdaq-100 Equal Weight

+1.74% med -0.33pp 37 / 11

QTOP 31/31

iShares Nasdaq-100 Top 30

+0.90% med +0.47pp 23 / 8

Tech & thematics

IGV 110/110

iShares Expanded Tech-Software

+3.29% med -0.95pp 87 / 20

SMH 25/25

VanEck Semiconductor

+1.96% med +0.31pp 21 / 4

XSD 43/43

SPDR S&P Semiconductor (EW)

+4.66% med -0.77pp 40 / 3

AIQ 66/66

Global X AI & Technology

+2.26% med -0.17pp 56 / 10

CIBR 41/41

First Trust Nasdaq Cybersecurity

+1.51% med +0.13pp 31 / 10

DTCR 20/20

Global X Data Center & Digital Infra

+1.18% med -0.40pp 13 / 7

WTAI 47/48 · 77% wt

WisdomTree AI & Innovation

+1.28% med +0.43pp 38 / 8

QTUM 62/63 · 76% wt

Defiance Quantum

+2.83% med -0.46pp 54 / 8

ARKK 42/42

ARK Innovation

+4.89% med -2.59pp 35 / 7

Global

IXN 87/124 · 81% wt

iShares Global Tech

+1.09% med +0.73pp 67 / 19

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 2026-08-07

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 2026-08-07.

Which sector shows the widest breadth divergence today?

As of 2026-08-07, AEI (Agentic Ecosystem Index (EW)) shows the widest gap between its median constituent and the ETF itself: median +4.74pp versus the ETF's -2.06%, with 27 advancers against 7 decliners.

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

As of 2026-08-07, 3 ETFs show improving breadth (advance/decline rising under flat or soft price), led by XLC, and 2 show weakening breadth (advance/decline falling under firm price), led by QTOP.

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.