Constituent dispersion · breadth vs the index
XSD — SPDR S&P Semiconductor (EW)
Concentration 22.9% in top 5 34.97 effective names · HHI 286
RS vs S&P 500 21d +16.85pp sector return − SPY
RS vs Nasdaq-100 21d +15.41pp sector return − QQQ
Broad advance - breadth is rising with price. Last 21 sessions — price +17.13% · A/D +39 (+1.7/name)
XSD 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 | -4.65% | -4.11% | +0.54pp | 5 / 18 | 14 / 9 | 4 of 23 | ±3.91% |
| 5d | +4.10% | +2.81% | -1.29pp | 20 / 3 | 11 / 12 | 5 of 23 | ±3.93% |
| 21d | +18.36% | +6.24% | -12.12pp | 17 / 6 | 7 / 16 | 1 of 23 | ±18.97% |
| YTD | +103.17% | +65.69% | -37.48pp | 22 / 1 | 7 / 16 | 1 of 23 | ±74.38% |
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)
- LSCC+3.07%+0.07pp
- SWKS+3.10%+0.06pp
- QRVO+2.73%+0.05pp
- OLED+1.65%+0.02pp
- CRUS+1.13%+0.02pp
- MRVL-9.78%-0.48pp
- INTC-8.45%-0.32pp
- ALAB-7.06%-0.32pp
- AMD-7.30%-0.28pp
- CRDO-7.80%-0.25pp
This month (21d)
- MRVL+57.54%+2.84pp
- ALAB+55.45%+2.5pp
- MU+40.86%+1.53pp
- CRDO+38.92%+1.26pp
- AMD+19.62%+0.75pp
- AVGO-11.40%-0.19pp
- NVDA-7.95%-0.13pp
- MPWR-3.31%-0.07pp
- MTSI-1.94%-0.05pp
- ADI-0.36%-0.01pp
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)
- MRVL+57.54%
- ALAB+55.45%
- MU+40.86%
- CRDO+38.92%
- ALGM+23.64%
- AVGO-11.40%
- NVDA-7.95%
- MPWR-3.31%
- MTSI-1.94%
- ADI-0.36%
Other ETFs & indices
Dispersion is computed across the constituents we cover in our data lake (see coverage badge). Decision-support, not investment advice.