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 2026-10-16.

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)

-1.83% med -0.44pp 41 / 88

HALO 99/100 · 99% wt

HALO Growth 100 (EW)

-0.36% med -0.30pp 38 / 61

AEI 34/34

Agentic Ecosystem Index (EW)

-5.84% med -0.83pp 2 / 32

EUROAI 61/65 · 94% wt

Euro-AI Sovereign 50 (EW)

-0.06% med +0.06pp 30 / 26

AW40 38/40 · 95% wt

Agentic Winners 40 (EW)

-1.96% med -0.28pp 6 / 32

S&P 500 sectors

XLK 72/72

Technology Select Sector

-3.02% med +0.01pp 7 / 65

XLF 76/76

Financial Select Sector

+0.45% med +0.04pp 44 / 32

XLV 59/59

Health Care Select Sector

-0.27% med -0.48pp 19 / 40

XLE 21/21

Energy Select Sector

+2.52% med +0.35pp 21 / 0

XLI 80/80

Industrial Select Sector

-0.08% med +0.08pp 40 / 40

XLP 36/36

Consumer Staples Select Sector

+1.08% med +0.20pp 31 / 5

XLY 48/48

Consumer Discretionary Select Sector

-0.84% med +0.49pp 20 / 28

XLU 31/31

Utilities Select Sector

+1.34% med +0.47pp 28 / 3

XLB 26/26

Materials Select Sector

+0.71% med -0.37pp 14 / 11

XLRE 31/31

Real Estate Select Sector

+0.40% med +0.20pp 24 / 7

XLC 23/23

Communication Services Select Sector

-1.89% med +1.59pp 6 / 15

Nasdaq-100 cuts

QTEC 45/45

First Trust Nasdaq-100 Technology

-4.09% med +0.57pp 4 / 41

QQXT 56/56

First Trust Nasdaq-100 Ex-Technology

-0.31% med +0.68pp 31 / 23

QQEW 49/49

First Trust Nasdaq-100 Equal Weight

-3.09% med +1.16pp 8 / 40

QTOP 31/31

iShares Nasdaq-100 Top 30

-2.72% med +0.59pp 7 / 24

Tech & thematics

IGV 110/110

iShares Expanded Tech-Software

-4.80% med +1.30pp 8 / 100

SMH 25/25

VanEck Semiconductor

-3.41% med +0.34pp 1 / 24

XSD 43/43

SPDR S&P Semiconductor (EW)

-4.24% med +0.71pp 2 / 40

AIQ 66/66

Global X AI & Technology

-3.23% med +0.01pp 4 / 62

CIBR 41/41

First Trust Nasdaq Cybersecurity

-4.55% med +0.28pp 5 / 36

DTCR 20/20

Global X Data Center & Digital Infra

-1.75% med -3.29pp 6 / 14

WTAI 47/48 · 77% wt

WisdomTree AI & Innovation

-4.77% med +0.49pp 1 / 45

QTUM 62/63 · 76% wt

Defiance Quantum

-3.38% med -0.99pp 6 / 56

ARKK 42/42

ARK Innovation

-4.71% med +0.65pp 1 / 41

Global

IXN 87/124 · 81% wt

iShares Global Tech

-2.88% med +0.26pp 9 / 78

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 2026-10-16

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 2026-10-16.

Which sector shows the widest breadth divergence today?

As of 2026-10-16, DTCR (Global X Data Center & Digital Infra) shows the widest gap between its median constituent and the ETF itself: median -3.29pp versus the ETF's -1.75%, with 6 advancers against 14 decliners.

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

As of 2026-10-16, 6 ETFs show improving breadth (advance/decline rising under flat or soft price), led by JXI, and 6 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 Closelooknet data lake — coverage is shown per ETF card.