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Constituent dispersion · breadth vs the index

XLB — Materials Select Sector

26/26 covered · 100% by weight · benchmark: XLB price · closes through 2026-10-07 ·holdings as of 2026-06-16

Concentration 38.46% in top 5 17.73 effective names · HHI 564
RS vs S&P 500 21d -7.42pp sector return − SPY
RS vs Nasdaq-100 21d -11.18pp sector return − QQQ
Broad decline - breadth is falling with price. Last 21 sessions — price -5.7% · A/D -92 (-3.54/name)
XLB price
Cumulative advance / decline of constituents — rises when more names are up than down; turns before price at inflections

Divergence over time — price vs breadth, by horizon

The hero read is the 1-month picture; here the same price↔breadth divergence across 1 week / 1 month / 1 quarter, computed over the 126-session history. A/D /name is net advancers-minus-decliners per covered constituent; % beating Δ and median−ETF Δ show how participation shifted. Price rising while those fall = the move is narrowing under the surface.

HorizonPriceA/D /name% beating ΔMedian−ETF ΔRead
1 week +0.57% -0.04 -8pp -0.50pp Weakening
1 month -5.70% -3.54 +7pp +1.93pp Confirming ↓
1 quarter -2.55% -3.31 -23pp -3.45pp Confirming ↓

Over the last 126 sessions: price down -2.47%, breadth down (-5.38/name) · % beating 31→42 · median−ETF -2.62pp→-0.45pp.

Stocks above their moving average — participation breadth

Of the 26 covered constituents, the share trading above each simple moving average — the classic breadth gauge. A firm index price with a low %-above-MA is a narrow, top-heavy tape. As of 2026-10-07.

5-day 34.62% 9/26 above
20-day 19.23% 5/26 above
50-day 7.69% 2/26 above
100-day 19.23% 5/26 above
150-day 26.92% 7/26 above
200-day 32% 8/25 above
% of constituents above their 50-day average — breadth over the last year; 50% is the participation midpoint

New highs & new lows — by horizon

How many of the 26 covered constituents closed today at a new high (or low) over each window, and the net. A shrinking net as the index holds up = fewer names leading.

HorizonNew highsNew lowsNet
5-Day 3 (12%) 12 (46%) -9
1-Month 0 (0%) 11 (42%) -11
3-Month 0 (0%) 7 (27%) -7
6-Month 0 (0%) 3 (12%) -3
52-Week 0 (0%) 2 (8%) -2
YTD 0 (0%) 3 (12%) -3

Dispersion by window

WindowETFMedianMedian − ETF Up / DownBeat / Lag±1% bandDispersion
1d -1.51% -1.36% +0.15pp 3 / 23 15 / 11 19 of 26 ±1.47%
5d +0.57% -0.17% -0.74pp 12 / 13 12 / 13 8 of 25 ±3.09%
21d -5.70% -6.09% -0.39pp 2 / 23 11 / 14 6 of 25 ±6.27%
YTD +8.49% +9.40% +0.91pp 16 / 8 14 / 10 2 of 24 ±23.98%

Median − ETF below zero means the typical name is lagging the cap-weighted index — the move is top-heavy. "Beat" counts constituents outperforming the ETF over the window. Dispersion is the cross-sectional standard deviation of constituent returns — high = a stock-picker's tape, low = pure beta.

What drove the move — contribution = weight × return

Today (1d)

  • CTVA+3.88%+0.16pp
  • IFF+0.23%+0.01pp
  • BALL+0.09%+0pp
  • LIN-1.22%-0.18pp
  • NEM-2.45%-0.16pp
  • NUE-1.84%-0.12pp
  • CRH-2.56%-0.11pp
  • VMC-1.90%-0.09pp

This month (21d)

  • LIN+3.33%+0.49pp
  • ECL+0.26%+0.01pp
  • NEM-10.66%-0.7pp
  • ALB-20.43%-0.49pp
  • CRH-10.10%-0.44pp
  • FCX-6.21%-0.36pp
  • CF-14.81%-0.3pp

Each name's contribution = its index weight × its return — the percentage points it added to (green) or subtracted from (red) the ETF's move. Computed across covered names.

Leaders & laggards (21-day)

  • LIN+3.33%
  • ECL+0.26%
  • DD-0.18%
  • IFF-1.30%
  • PKG-1.41%
  • MOS-24.09%
  • ALB-20.43%
  • CF-14.81%
  • IP-12.80%
  • NEM-10.66%

XLB — constituent leadership race

$100 in each covered XLB constituent at 2025-12-24, rebased to 100. Watch leadership change hands.

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Each covered constituent started at $100 at the window open; the bars race by total return (top 12 shown). Decision-support, not investment advice.

Constituents — 26 covered · click a column to sort

Symbol Weight Last 1d 5d 21d YTD RS rank
LIN Linde Plc 14.61% 483.98 -1.22% +1.97% +3.33% +13.89% 96
NUE Nucor Corp 6.64% 246.44 -1.84% +5.43% -3.88% +51.60% 64
NEM Newmont Mining Corp 6.53% 113.54 -2.45% -1.56% -10.66% +14.21% 16
FCX Freeport-Mcmoran Inc 5.87% 71.86 -0.96% +2.66% -6.21% +42.15% 44
STLD Steel Dynamics Inc 4.67% 234.09 -1.71% +5.63% -2.59% +38.57% 72
VMC Vulcan Materials Company 4.55% 244.13 -1.90% -0.20% -5.49% -14.07% 56
CRH CRH Plc ADR 4.38% 81.46 -2.56% -1.62% -10.10% -34.26% 20
SHW Sherwin-Williams Company 4.37% 315.00 -1.92% -2.56% -3.40% -2.57% 68
APD Air Products and Chemicals 4.34% 278.12 -1.02% +0.62% -6.58% +14.12% 36
CTVA Corteva Inc 4.15% 14.45 +3.88% — — — —
MLM Martin Marietta Materials 4.14% 479.01 -2.04% -0.17% -6.44% -22.87% 40
ECL Ecolab Inc 4.10% 278.10 -0.97% +1.28% +0.26% +6.22% 92
PPG PPG Industries 3.22% 105.08 -1.35% +0.72% -4.23% +3.82% 60
DOW Dow Inc 2.92% 27.77 -1.38% +0.84% -6.09% +21.41% 48
SW Smurfit Westrock Plc 2.72% 41.29 -2.59% -6.37% -6.71% +8.95% 32
PKG Packaging Corp of America 2.44% 227.25 -1.08% -0.88% -1.41% +10.84% 80
ALB Albemarle Corp 2.41% 102.75 -3.39% -2.86% -20.43% -27.17% 4
IFF International Flavors & Fragrances 2.41% 84.11 +0.23% +0.75% -1.30% +25.55% 84
DD Dupont Denemours Inc 2.37% 131.08 -1.65% +0.92% -0.18% +9.56% 88
IP International Paper Company 2.29% 31.82 -1.00% -4.07% -12.80% -17.20% 12
AMCR Amcor Plc 2.26% 41.26 -1.22% -1.43% -6.95% — 28
CF Cf Industries Holdings 2.05% 114.44 -1.36% -0.66% -14.81% +49.37% 8
LYB Lyondellbasell Industries NV 2.00% 58.49 -0.75% +1.77% -9.44% +38.15% 24
BALL Ball Corporation 1.84% 57.48 +0.09% +2.59% -5.80% +9.24% 52
AVY Avery Dennison Corp 1.48% 166.97 -0.88% -2.17% -2.19% -7.15% 76
MOS Mosaic Company 0.87% 19.97 -4.63% -7.76% -24.09% -15.55% 0

RS rank = the constituent's 21-day return percentile within the index (100 = strongest of the covered names). Weight is the index weight; returns use adjusted closes. Default sort: weight.

Other ETFs & indices

Dispersion is computed across the constituents we cover in our data lake (see coverage badge). Decision-support, not investment advice.

FAQ · from the current data

XLB dispersion — data Q&A

Is XLB's move broad or carried by a few names (21 sessions)?

As of 2026-10-07: over 21 sessions the fund returned -5.70% while its median constituent returned -6.09% — a dispersion of 6.27 pp; 44% of 25 members beat the fund. Broad decline - breadth is falling with price.

How did XLB's members trade in the last session?

As of 2026-10-07: fund -1.51%, median member -1.36%, 3 advancers vs 23 decliners.

What does the dispersion page for XLB measure?

It splits the fund into its members: the fund's own return against the median constituent, how many members beat the fund, advancers vs decliners, and a cumulative advance/decline line that tends to lead price. A firm fund price with a weak median and a falling A/D line is a narrow, top-heavy tape; a broad move shows the median keeping up. 26 constituents covered, re-baked nightly from the Closelooknet lake.

Is this investment advice?

No — a data surface in an investment research diary. It describes breadth inside a fund; it makes no recommendation.