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 | -0.67% | -0.27 | -23pp | -1.08pp | Weakening |
| 1 month | +2.98% | +0.5 | -35pp | -2.96pp | Confirming ↑ |
| 1 quarter | +3.97% | +1.12 | -15pp | -0.30pp | Confirming ↑ |
Over the last 126 sessions: price up +0.68%, breadth down (-3.08/name) · % beating 54→27 · median−ETF +0.57pp→-1.68pp.
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 2026-08-28.
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%) | 8 (31%) | -5 |
| 1-Month | 1 (4%) | 2 (8%) | -1 |
| 3-Month | 0 (0%) | 0 (0%) | +0 |
| 6-Month | 0 (0%) | 0 (0%) | +0 |
| 52-Week | 0 (0%) | 0 (0%) | +0 |
| YTD | 0 (0%) | 0 (0%) | +0 |
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | -0.09% | +0.27% | +0.36pp | 15 / 11 | 15 / 11 | 17 of 26 | ±1.18% |
| 5d | -0.67% | -0.64% | +0.03pp | 10 / 16 | 13 / 13 | 6 of 26 | ±2.81% |
| 21d | +2.98% | +1.30% | -1.68pp | 16 / 10 | 7 / 19 | 4 of 26 | ±9.04% |
| YTD | +17.79% | +17.25% | -0.54pp | 19 / 6 | 12 / 13 | 1 of 25 | ±21.9% |
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+0.86%+0.13pp
- CTVA+1.82%+0.08pp
- APD+0.86%+0.04pp
- IFF+1.27%+0.03pp
- ALB+1.17%+0.03pp
- NEM-3.26%-0.21pp
- FCX-2.51%-0.15pp
- NUE-0.74%-0.05pp
- PKG-1.35%-0.03pp
- IP-1.43%-0.03pp
This month (21d)
- NEM+33.65%+2.2pp
- FCX+20.51%+1.2pp
- ALB+16.64%+0.4pp
- IFF+10.66%+0.26pp
- APD+2.63%+0.11pp
- LIN-3.76%-0.55pp
- STLD-7.06%-0.33pp
- CTVA-6.09%-0.25pp
- IP-8.90%-0.2pp
- NUE-2.54%-0.17pp
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)
- NEM+33.65%
- FCX+20.51%
- ALB+16.64%
- IFF+10.66%
- LYB+5.34%
- IP-8.90%
- STLD-7.06%
- CTVA-6.09%
- LIN-3.76%
- PKG-3.31%
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% | 489.51 | +0.86% | +0.40% | -3.76% | +15.19% | 12 |
| NUE Nucor Corp | 6.64% | 250.50 | -0.74% | +2.82% | -2.54% | +54.10% | 19 |
| NEM Newmont Mining Corp | 6.53% | 127.98 | -3.26% | -2.74% | +33.65% | +28.73% | 96 |
| FCX Freeport-Mcmoran Inc | 5.87% | 76.45 | -2.51% | -0.27% | +20.51% | +51.23% | 92 |
| STLD Steel Dynamics Inc | 4.67% | 234.67 | -0.50% | +2.62% | -7.06% | +38.91% | 4 |
| VMC Vulcan Materials Company | 4.55% | 274.51 | +0.24% | -0.55% | +1.21% | -3.38% | 46 |
| CRH CRH Plc ADR | 4.38% | 95.86 | +0.29% | +0.83% | -0.15% | -22.64% | 35 |
| SHW Sherwin-Williams Company | 4.37% | 344.86 | -0.10% | -0.50% | +0.01% | +6.66% | 38 |
| APD Air Products and Chemicals | 4.34% | 308.09 | +0.86% | +0.98% | +2.63% | +26.42% | 65 |
| CTVA Corteva Inc | 4.15% | 83.90 | +1.82% | +2.58% | -6.09% | +25.74% | 8 |
| MLM Martin Marietta Materials | 4.14% | 531.05 | +0.47% | -0.72% | -1.66% | -14.49% | 27 |
| ECL Ecolab Inc | 4.10% | 286.75 | +0.29% | +1.82% | +2.65% | +9.52% | 69 |
| PPG PPG Industries | 3.22% | 114.22 | +0.66% | +0.52% | +1.95% | +12.85% | 62 |
| DOW Dow Inc | 2.92% | 30.51 | +0.59% | -5.69% | +1.40% | +33.38% | 50 |
| SW Smurfit Westrock Plc | 2.72% | 48.29 | -0.70% | -2.23% | +1.62% | +27.42% | 54 |
| PKG Packaging Corp of America | 2.44% | 240.39 | -1.35% | -4.91% | -3.31% | +17.25% | 15 |
| ALB Albemarle Corp | 2.41% | 137.36 | +1.17% | -4.11% | +16.64% | -2.64% | 88 |
| IFF International Flavors & Fragrances | 2.41% | 87.95 | +1.27% | +4.35% | +10.66% | +31.28% | 85 |
| DD Dupont Denemours Inc | 2.37% | 136.98 | -1.31% | -0.98% | -1.34% | +14.49% | 31 |
| IP International Paper Company | 2.29% | 39.31 | -1.43% | -5.25% | -8.90% | +2.29% | 0 |
| AMCR Amcor Plc | 2.26% | 46.67 | +0.32% | -3.95% | +3.37% | — | 73 |
| CF Cf Industries Holdings | 2.05% | 125.79 | +0.06% | -2.94% | +0.02% | +64.18% | 42 |
| LYB Lyondellbasell Industries NV | 2.00% | 63.67 | +0.97% | -4.74% | +5.34% | +50.39% | 81 |
| BALL Ball Corporation | 1.84% | 63.77 | +0.63% | +0.28% | -2.36% | +21.19% | 23 |
| AVY Avery Dennison Corp | 1.48% | 177.75 | -0.33% | -3.24% | +1.68% | -1.16% | 58 |
| MOS Mosaic Company | 0.87% | 23.60 | -0.67% | -3.32% | +3.65% | -0.20% | 77 |
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 2026-08-28: over 21 sessions the fund returned +2.98% while its median constituent returned +1.30% — a dispersion of 9.04 pp; 27% of 26 members beat the fund. Broad advance - breadth is rising with price.
How did XLB's members trade in the last session?
As of 2026-08-28: fund -0.09%, median member +0.27%, 15 advancers vs 11 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.