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 | +0.57% | -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.
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 | 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
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 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.
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.