Constituent dispersion · breadth vs the index
XLV — Health Care Select Sector
Concentration 45.88% in top 5 16.81 effective names · HHI 595
RS vs S&P 500 21d +3.89pp sector return − SPY
RS vs Nasdaq-100 21d +2.45pp sector return − QQQ
Broad advance - breadth is rising with price. Last 21 sessions — price +5.4% · A/D +77 (+1.31/name)
XLV 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 | +0.03% | -0.04% | -0.07pp | 29 / 30 | 29 / 30 | 43 of 59 | ±1.49% |
| 5d | -1.05% | +0.95% | +2.00pp | 32 / 27 | 39 / 20 | 15 of 59 | ±3.73% |
| 21d | +5.40% | +4.47% | -0.93pp | 49 / 10 | 26 / 33 | 11 of 59 | ±7.98% |
| YTD | -0.80% | -1.04% | -0.24pp | 28 / 31 | 29 / 30 | 3 of 59 | ±25.42% |
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)
- GILD+2.36%+0.07pp
- TMO+0.93%+0.03pp
- ABBV+0.40%+0.03pp
- SYK+0.86%+0.02pp
- ABT+0.56%+0.02pp
- LLY-0.61%-0.1pp
- UNH-0.82%-0.05pp
- AMGN-0.77%-0.03pp
- JNJ-0.20%-0.02pp
- INCY-6.04%-0.02pp
This month (21d)
- LLY+11.70%+1.89pp
- ABBV+5.74%+0.42pp
- JNJ+3.74%+0.39pp
- UNH+3.50%+0.23pp
- AMGN+6.60%+0.23pp
- BSX-12.68%-0.16pp
- REGN-11.83%-0.13pp
- HCA-10.06%-0.11pp
- GILD-1.81%-0.05pp
- BMY-1.89%-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)
- HUM+26.19%
- TECH+25.78%
- DXCM+18.71%
- CRL+18.45%
- BAX+17.10%
- UHS-14.47%
- BSX-12.68%
- REGN-11.83%
- HCA-10.06%
- RMD-4.80%
Other ETFs & indices
Dispersion is computed across the constituents we cover in our data lake (see coverage badge). Decision-support, not investment advice.