Constituent dispersion · breadth vs the index
XLU — Utilities Select Sector
Concentration 38.68% in top 5 19.76 effective names · HHI 506
RS vs S&P 500 21d +1.20pp sector return − SPY
RS vs Nasdaq-100 21d -0.24pp sector return − QQQ
Broad advance - breadth is rising with price. Last 21 sessions — price +2.71% · A/D +112 (+3.61/name)
XLU price
Cumulative advance / decline of constituents — rises when more names are up than down; turns before price at inflections
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | +0.72% | +0.42% | -0.29pp | 21 / 9 | 6 / 25 | 23 of 31 | ±1.15% |
| 5d | +2.46% | +2.75% | +0.29pp | 30 / 1 | 18 / 13 | 20 of 31 | ±1.29% |
| 21d | +2.71% | +1.52% | -1.19pp | 24 / 7 | 10 / 21 | 9 of 31 | ±3.55% |
| YTD | +6.29% | +8.14% | +1.85pp | 27 / 4 | 20 / 11 | 1 of 31 | ±10.08% |
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)
- VST+3.72%+0.13pp
- CEG+2.15%+0.13pp
- NRG+3.93%+0.08pp
- DUK+0.62%+0.04pp
- SO+0.52%+0.04pp
- PCG-2.18%-0.06pp
- EIX-1.11%-0.02pp
- SRE-0.39%-0.02pp
- XEL-0.47%-0.02pp
- EVRG-0.49%-0.01pp
This month (21d)
- D+9.31%+0.39pp
- DUK+4.22%+0.3pp
- VST+8.19%+0.28pp
- EXC+7.40%+0.25pp
- SO+2.75%+0.21pp
- NEE-7.64%-0.99pp
- ATO-5.70%-0.12pp
- NRG-3.21%-0.06pp
- ETR-1.61%-0.06pp
- SRE-1.00%-0.04pp
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)
- D+9.31%
- VST+8.19%
- EXC+7.40%
- FE+6.38%
- DUK+4.22%
- NEE-7.64%
- ATO-5.70%
- NRG-3.21%
- ETR-1.61%
- PCG-1.37%
Other ETFs & indices
Dispersion is computed across the constituents we cover in our data lake (see coverage badge). Decision-support, not investment advice.