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 | -0.12% | -0.27 | -4pp | -0.31pp | Weakening |
| 1 month | -2.52% | -2.08 | +11pp | +1.86pp | Confirming ↓ |
| 1 quarter | -2.37% | -3.31 | -16pp | -2.27pp | Confirming ↓ |
Over the last 126 sessions: price down -4.32%, breadth down (-5.31/name) · % beating 42→46 · median−ETF -0.65pp→-0.24pp.
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 2026-10-12.
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 | 6 (23%) | 7 (27%) | -1 |
| 1-Month | 1 (4%) | 6 (23%) | -5 |
| 3-Month | 0 (0%) | 6 (23%) | -6 |
| 6-Month | 0 (0%) | 3 (12%) | -3 |
| 52-Week | 0 (0%) | 2 (8%) | -2 |
| YTD | 0 (0%) | 3 (12%) | -3 |
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | +0.02% | -0.17% | -0.19pp | 12 / 14 | 12 / 14 | 19 of 26 | ±1.03% |
| 5d | -0.12% | -0.59% | -0.47pp | 11 / 15 | 11 / 15 | 9 of 26 | ±3.28% |
| 21d | -2.52% | -2.59% | -0.08pp | 5 / 20 | 12 / 13 | 7 of 25 | ±6.65% |
| YTD | +9.50% | +9.85% | +0.35pp | 16 / 8 | 12 / 12 | 1 of 24 | ±25.28% |
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)
- LIN+0.75%+0.11pp
- CF+2.73%+0.06pp
- APD+0.93%+0.04pp
- NUE+0.60%+0.04pp
- ECL+0.88%+0.04pp
- ALB-2.73%-0.07pp
- NEM-0.59%-0.04pp
- FCX-0.54%-0.03pp
- DOW-1.06%-0.03pp
- PKG-1.17%-0.03pp
This month (21d)
- LIN+4.53%+0.66pp
- FCX+3.12%+0.18pp
- ECL+3.21%+0.13pp
- IFF+2.10%+0.05pp
- DD+1.87%+0.04pp
- NEM-7.62%-0.5pp
- ALB-16.18%-0.39pp
- CRH-8.47%-0.37pp
- CF-13.89%-0.28pp
- MLM-6.43%-0.27pp
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+4.53%
- ECL+3.21%
- FCX+3.12%
- IFF+2.10%
- DD+1.87%
- MOS-25.17%
- ALB-16.18%
- CF-13.89%
- CRH-8.47%
- IP-7.63%
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% | 487.35 | +0.75% | +1.03% | +4.53% | +14.68% | 96 |
| NUE Nucor Corp | 6.64% | 251.83 | +0.60% | +0.17% | -2.93% | +54.92% | 44 |
| NEM Newmont Mining Corp | 6.53% | 117.15 | -0.59% | +1.15% | -7.62% | +17.84% | 20 |
| FCX Freeport-Mcmoran Inc | 5.87% | 73.29 | -0.54% | +0.95% | +3.12% | +44.98% | 88 |
| STLD Steel Dynamics Inc | 4.67% | 239.14 | +0.32% | -0.79% | -0.27% | +41.56% | 76 |
| VMC Vulcan Materials Company | 4.55% | 245.15 | +0.23% | -0.17% | -3.00% | -13.71% | 40 |
| CRH CRH Plc ADR | 4.38% | 81.05 | -0.60% | -1.94% | -8.47% | -34.59% | 12 |
| SHW Sherwin-Williams Company | 4.37% | 320.21 | +0.27% | +0.55% | -0.96% | -0.96% | 72 |
| APD Air Products and Chemicals | 4.34% | 283.87 | +0.93% | +1.58% | -2.59% | +16.48% | 48 |
| CTVA Corteva Inc | 4.15% | 13.30 | +0.45% | +7.34% | — | — | — |
| MLM Martin Marietta Materials | 4.14% | 477.18 | -0.24% | -1.71% | -6.43% | -23.16% | 28 |
| ECL Ecolab Inc | 4.10% | 284.30 | +0.88% | +2.61% | +3.21% | +8.59% | 92 |
| PPG PPG Industries | 3.22% | 103.71 | -0.24% | -1.48% | -1.70% | +2.47% | 60 |
| DOW Dow Inc | 2.92% | 28.12 | -1.06% | -1.37% | -3.13% | +22.94% | 36 |
| SW Smurfit Westrock Plc | 2.72% | 41.07 | -0.53% | -3.16% | -4.97% | +8.37% | 32 |
| PKG Packaging Corp of America | 2.44% | 227.82 | -1.17% | -0.65% | -2.18% | +11.12% | 52 |
| ALB Albemarle Corp | 2.41% | 98.51 | -2.73% | -5.61% | -16.18% | -30.18% | 4 |
| IFF International Flavors & Fragrances | 2.41% | 84.96 | +0.48% | +2.04% | +2.10% | +26.82% | 84 |
| DD Dupont Denemours Inc | 2.37% | 129.37 | -0.48% | -1.01% | +1.87% | +8.13% | 80 |
| IP International Paper Company | 2.29% | 31.74 | -1.18% | -0.97% | -7.63% | -17.41% | 16 |
| AMCR Amcor Plc | 2.26% | 41.58 | -0.34% | -0.53% | -1.75% | — | 56 |
| CF Cf Industries Holdings | 2.05% | 114.58 | +2.73% | -1.24% | -13.89% | +49.55% | 8 |
| LYB Lyondellbasell Industries NV | 2.00% | 59.41 | -1.03% | +0.32% | -6.72% | +40.32% | 24 |
| BALL Ball Corporation | 1.84% | 59.19 | +1.25% | +3.64% | -1.19% | +12.49% | 64 |
| AVY Avery Dennison Corp | 1.48% | 167.65 | -0.10% | -1.38% | -1.02% | -6.77% | 68 |
| MOS Mosaic Company | 0.87% | 18.85 | +0.59% | -11.46% | -25.17% | -20.29% | 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 2026-10-13: over 21 sessions the fund returned -2.52% while its median constituent returned -2.59% — a dispersion of 6.65 pp; 48% 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 2026-10-13: fund +0.02%, median member -0.17%, 12 advancers vs 14 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.