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 | -0.10% | -0.27 | +11pp | -0.64pp | Weakening |
| 1 month | -2.07% | -2.12 | -16pp | -3.00pp | Confirming ↓ |
| 1 quarter | -2.16% | -2.08 | -20pp | -3.64pp | Confirming ↓ |
Over the last 126 sessions: price up +3.11%, breadth down (-3.77/name) · % beating 31→38 · median−ETF -3.70pp→-1.97pp.
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 2026-09-17.
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 | 7 (27%) | 6 (23%) | +1 |
| 1-Month | 1 (4%) | 4 (15%) | -3 |
| 3-Month | 0 (0%) | 3 (12%) | -3 |
| 6-Month | 0 (0%) | 3 (12%) | -3 |
| 52-Week | 0 (0%) | 2 (8%) | -2 |
| YTD | 0 (0%) | 2 (8%) | -2 |
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | +0.69% | +0.62% | -0.07pp | 16 / 9 | 12 / 14 | 9 of 26 | ±1.7% |
| 5d | -0.10% | -0.06% | +0.04pp | 12 / 14 | 14 / 12 | 10 of 26 | ±2.65% |
| 21d | -2.07% | -4.04% | -1.97pp | 7 / 19 | 10 / 16 | 3 of 26 | ±7.51% |
| YTD | +12.32% | +14.90% | +2.58pp | 18 / 7 | 13 / 12 | 0 of 25 | ±25.89% |
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)
- NEM+2.16%+0.14pp
- STLD+2.99%+0.14pp
- FCX+2.33%+0.14pp
- ALB+5.10%+0.12pp
- NUE+1.71%+0.11pp
- LIN-0.78%-0.11pp
- DOW-1.96%-0.06pp
- ECL-0.88%-0.04pp
- LYB-1.00%-0.02pp
- MLM-0.47%-0.02pp
This month (21d)
- NEM+7.25%+0.47pp
- FCX+6.83%+0.4pp
- CF+11.78%+0.24pp
- CTVA+4.65%+0.19pp
- MOS+20.10%+0.17pp
- LIN-4.23%-0.62pp
- VMC-9.99%-0.45pp
- ALB-13.31%-0.32pp
- CRH-7.02%-0.31pp
- SHW-6.83%-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)
- MOS+20.10%
- CF+11.78%
- NEM+7.25%
- FCX+6.83%
- IFF+4.83%
- ALB-13.31%
- IP-11.24%
- VMC-9.99%
- AMCR-7.59%
- DD-7.46%
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% | 458.48 | -0.78% | -0.68% | -4.23% | +7.89% | 46 |
| NUE Nucor Corp | 6.64% | 265.14 | +1.71% | +3.79% | +0.36% | +63.11% | 73 |
| NEM Newmont Mining Corp | 6.53% | 124.39 | +2.16% | -1.39% | +7.25% | +25.12% | 88 |
| FCX Freeport-Mcmoran Inc | 5.87% | 70.85 | +2.33% | -0.51% | +6.83% | +40.15% | 85 |
| STLD Steel Dynamics Inc | 4.67% | 245.35 | +2.99% | +3.49% | -1.79% | +45.24% | 62 |
| VMC Vulcan Materials Company | 4.55% | 244.50 | +0.08% | -2.43% | -9.99% | -13.94% | 8 |
| CRH CRH Plc ADR | 4.38% | 86.70 | +0.00% | -1.10% | -7.02% | -30.03% | 19 |
| SHW Sherwin-Williams Company | 4.37% | 320.94 | -0.16% | +1.10% | -6.83% | -0.73% | 23 |
| APD Air Products and Chemicals | 4.34% | 286.12 | -0.33% | -2.56% | -5.64% | +17.41% | 35 |
| CTVA Corteva Inc | 4.15% | 81.53 | +0.64% | -3.50% | +4.65% | +22.19% | 77 |
| MLM Martin Marietta Materials | 4.14% | 494.44 | -0.47% | -1.60% | -5.43% | -20.38% | 42 |
| ECL Ecolab Inc | 4.10% | 271.68 | -0.88% | +0.30% | -2.97% | +3.77% | 58 |
| PPG PPG Industries | 3.22% | 105.45 | +0.45% | +0.38% | -6.52% | +4.18% | 27 |
| DOW Dow Inc | 2.92% | 29.49 | -1.96% | -0.51% | -5.45% | +28.93% | 38 |
| SW Smurfit Westrock Plc | 2.72% | 45.48 | +2.02% | +7.75% | -3.85% | +20.01% | 50 |
| PKG Packaging Corp of America | 2.44% | 235.57 | +1.78% | +2.02% | -5.88% | +14.90% | 31 |
| ALB Albemarle Corp | 2.41% | 115.05 | +5.10% | -5.46% | -13.31% | -18.46% | 0 |
| IFF International Flavors & Fragrances | 2.41% | 84.91 | +0.60% | +1.02% | +4.83% | +26.74% | 81 |
| DD Dupont Denemours Inc | 2.37% | 128.46 | +0.70% | +0.90% | -7.46% | +7.37% | 15 |
| IP International Paper Company | 2.29% | 35.55 | +4.37% | +3.67% | -11.24% | -7.49% | 4 |
| AMCR Amcor Plc | 2.26% | 42.38 | +0.98% | -1.44% | -7.59% | — | 12 |
| CF Cf Industries Holdings | 2.05% | 133.82 | +1.39% | -0.95% | +11.78% | +74.66% | 92 |
| LYB Lyondellbasell Industries NV | 2.00% | 64.25 | -1.00% | -0.08% | -0.64% | +51.76% | 69 |
| BALL Ball Corporation | 1.84% | 60.75 | -0.83% | +1.69% | -1.49% | +15.45% | 65 |
| AVY Avery Dennison Corp | 1.48% | 171.09 | -0.69% | +1.37% | -3.73% | -4.86% | 54 |
| MOS Mosaic Company | 0.87% | 25.39 | +2.42% | -0.04% | +20.10% | +7.37% | 96 |
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 2026-09-17: over 21 sessions the fund returned -2.07% while its median constituent returned -4.04% — a dispersion of 7.51 pp; 38% of 26 members beat the fund. Broad decline - breadth is falling with price.
How did XLB's members trade in the last session?
As of 2026-09-17: fund +0.69%, median member +0.62%, 16 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 Closelook lake.
Is this investment advice?
No — a data surface in an investment research diary. It describes breadth inside a fund; it makes no recommendation.