Constituent dispersion · breadth vs the index
XLB — Materials Select Sector
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.
| Horizon | Price | A/D /name | % beating Δ | Median−ETF Δ | Read |
|---|---|---|---|---|---|
| 1 week | +1.41% | +1.08 | +12pp | +1.28pp | Confirming ↑ |
| 1 month | -1.64% | -0.85 | +16pp | +1.99pp | Confirming ↓ |
| 1 quarter | -2.40% | -2.92 | -11pp | -1.82pp | Confirming ↓ |
Over the last 126 sessions: price down -4.83%, breadth down (-4.92/name) · % beating 38→54 · median−ETF -1.64pp→+0.83pp.
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 2026-10-14.
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.
| Horizon | New highs | New lows | Net |
|---|---|---|---|
| 5-Day | 13 (50%) | 7 (27%) | +6 |
| 1-Month | 4 (15%) | 4 (15%) | +0 |
| 3-Month | 1 (4%) | 3 (12%) | -2 |
| 6-Month | 1 (4%) | 2 (8%) | -1 |
| 52-Week | 1 (4%) | 2 (8%) | -1 |
| YTD | 1 (4%) | 2 (8%) | -1 |
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | -0.10% | +0.30% | +0.40pp | 17 / 9 | 17 / 9 | 13 of 26 | ±1.53% |
| 5d | +1.41% | +1.50% | +0.09pp | 15 / 11 | 13 / 13 | 2 of 26 | ±3.7% |
| 21d | -1.64% | -0.66% | +0.98pp | 9 / 16 | 14 / 11 | 3 of 25 | ±7.05% |
| YTD | +10.01% | +11.03% | +1.01pp | 17 / 7 | 12 / 12 | 1 of 24 | ±26.43% |
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)
- NUE+1.30%+0.09pp
- DOW+2.39%+0.07pp
- APD+1.24%+0.05pp
- STLD+0.95%+0.04pp
- LYB+1.93%+0.04pp
- NEM-3.49%-0.23pp
- FCX-3.87%-0.23pp
- CRH-1.17%-0.05pp
- SW-1.69%-0.05pp
- VMC-0.73%-0.03pp
This month (21d)
- LIN+6.42%+0.94pp
- ECL+4.77%+0.2pp
- IFF+6.87%+0.17pp
- STLD+1.55%+0.07pp
- APD+0.68%+0.03pp
- NEM-10.17%-0.66pp
- CRH-9.68%-0.42pp
- ALB-13.64%-0.33pp
- MLM-7.05%-0.29pp
- CF-11.86%-0.24pp
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)
- IFF+6.87%
- LIN+6.42%
- ECL+4.77%
- STLD+1.55%
- APD+0.68%
- MOS-25.33%
- ALB-13.64%
- CF-11.86%
- NEM-10.17%
- CRH-9.68%
XLB — constituent leadership race
$100 in each covered XLB constituent at 2025-12-24, rebased to 100. Watch leadership change hands.
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% | 492.70 | +0.12% | +1.80% | +6.42% | +15.94% | 92 |
| NUE Nucor Corp | 6.64% | 257.11 | +1.30% | +4.33% | -0.66% | +58.17% | 48 |
| NEM Newmont Mining Corp | 6.53% | 111.56 | -3.49% | -1.74% | -10.17% | +12.22% | 12 |
| FCX Freeport-Mcmoran Inc | 5.87% | 69.62 | -3.87% | -3.12% | +0.35% | +37.72% | 72 |
| STLD Steel Dynamics Inc | 4.67% | 242.92 | +0.95% | +3.77% | +1.55% | +43.80% | 84 |
| VMC Vulcan Materials Company | 4.55% | 241.77 | -0.73% | -0.97% | -2.98% | -14.90% | 36 |
| CRH CRH Plc ADR | 4.38% | 79.20 | -1.17% | -2.77% | -9.68% | -36.08% | 16 |
| SHW Sherwin-Williams Company | 4.37% | 324.54 | +0.14% | +3.03% | +0.41% | +0.38% | 76 |
| APD Air Products and Chemicals | 4.34% | 292.53 | +1.24% | +5.18% | +0.68% | +20.04% | 80 |
| CTVA Corteva Inc | 4.15% | 13.40 | +0.30% | -7.27% | — | — | — |
| MLM Martin Marietta Materials | 4.14% | 471.10 | -0.28% | -1.65% | -7.05% | -24.14% | 20 |
| ECL Ecolab Inc | 4.10% | 287.71 | +0.72% | +3.46% | +4.77% | +9.89% | 88 |
| PPG PPG Industries | 3.22% | 104.87 | +0.31% | -0.20% | -0.02% | +3.61% | 60 |
| DOW Dow Inc | 2.92% | 29.19 | +2.39% | +5.11% | -2.21% | +27.61% | 40 |
| SW Smurfit Westrock Plc | 2.72% | 40.75 | -1.69% | -1.31% | -6.77% | +7.53% | 24 |
| PKG Packaging Corp of America | 2.44% | 229.96 | -0.73% | +1.19% | -0.54% | +12.16% | 52 |
| ALB Albemarle Corp | 2.41% | 97.97 | +0.33% | -4.65% | -13.64% | -30.56% | 4 |
| IFF International Flavors & Fragrances | 2.41% | 89.60 | +1.59% | +6.53% | +6.87% | +33.74% | 96 |
| DD Dupont Denemours Inc | 2.37% | 128.48 | -0.83% | -1.98% | +0.34% | +7.39% | 68 |
| IP International Paper Company | 2.29% | 31.90 | +0.28% | +0.25% | -6.15% | -16.99% | 32 |
| AMCR Amcor Plc | 2.26% | 42.28 | +1.22% | +2.47% | -0.42% | — | 56 |
| CF Cf Industries Holdings | 2.05% | 119.46 | +1.88% | +4.39% | -11.86% | +55.92% | 8 |
| LYB Lyondellbasell Industries NV | 2.00% | 61.17 | +1.93% | +4.58% | -6.51% | +44.48% | 28 |
| BALL Ball Corporation | 1.84% | 60.43 | +1.46% | +5.13% | -0.95% | +14.84% | 44 |
| AVY Avery Dennison Corp | 1.48% | 171.84 | +0.66% | +2.92% | +0.19% | -4.44% | 64 |
| MOS Mosaic Company | 0.87% | 19.01 | -0.89% | -4.81% | -25.33% | -19.61% | 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 2026-10-14: over 21 sessions the fund returned -1.64% while its median constituent returned -0.66% — a dispersion of 7.05 pp; 56% 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 2026-10-14: fund -0.10%, median member +0.30%, 17 advancers vs 9 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.