Constituent dispersion · breadth vs the index
XSD — SPDR S&P Semiconductor (EW)
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 | +1.36% | +0.86 | +4pp | +0.50pp | Confirming ↑ |
| 1 month | -2.42% | -0.19 | -3pp | +0.88pp | Confirming ↓ |
| 1 quarter | +54.67% | +8.09 | -7pp | -1.44pp | Confirming ↑ |
Over the last 126 sessions: price up +64.16%, breadth up (+8.84/name) · % beating 51→44 · median−ETF +0.37pp→-1.11pp.
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | -1.06% | -1.38% | -0.31pp | 12 / 31 | 18 / 25 | 14 of 43 | ±2.18% |
| 5d | +1.36% | +1.21% | -0.15pp | 27 / 15 | 21 / 22 | 7 of 43 | ±6.68% |
| 21d | -2.42% | -3.53% | -1.11pp | 15 / 28 | 19 / 24 | 4 of 43 | ±14.51% |
| YTD | +75.29% | +74.23% | -1.06pp | 37 / 5 | 21 / 21 | 0 of 42 | ±69.71% |
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)
- AMD+2.04%+0.08pp
- NVDA+4.03%+0.07pp
- POWI+1.75%+0.04pp
- DIOD+1.67%+0.03pp
- TXN+0.95%+0.02pp
- MXL-4.70%-0.27pp
- NVTS-5.01%-0.16pp
- MRVL-3.04%-0.15pp
- ALGM-4.37%-0.1pp
- PENG-3.74%-0.1pp
This month (21d)
- MXL+25.74%+1.49pp
- ALAB+20.86%+0.94pp
- PENG+27.01%+0.74pp
- AMD+17.32%+0.67pp
- ALGM+17.67%+0.42pp
- NVTS-41.05%-1.28pp
- MRVL-11.64%-0.57pp
- ON-17.98%-0.55pp
- RMBS-23.66%-0.53pp
- SMTC-13.58%-0.4pp
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)
- PENG+27.01%
- MXL+25.74%
- ALAB+20.86%
- ALGM+17.67%
- AMBA+17.57%
- NVTS-41.05%
- WOLF-27.65%
- RMBS-23.66%
- KOPN-20.89%
- ON-17.98%
XSD — constituent leadership race
$100 in each covered XSD constituent at 2025-12-30, 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 — 43 covered · click a column to sort
| Symbol | Weight | Last | 1d | 5d | 21d | YTD | RS rank |
|---|---|---|---|---|---|---|---|
| MXL Maxlinear Inc | 5.77% | 91.30 | -4.70% | -1.95% | +25.74% | — | 95 |
| MRVL Marvell Technology Inc | 4.93% | 235.81 | -3.04% | -3.84% | -11.64% | +177.83% | 30 |
| ALAB Astera Labs Inc | 4.50% | 412.97 | -1.07% | +1.61% | +20.86% | +148.24% | 93 |
| AMD Adv Micro Devices | 3.84% | 557.89 | +2.04% | +7.74% | +17.32% | +160.50% | 86 |
| INTC Intel Corp | 3.84% | 109.84 | -2.40% | -8.73% | +1.78% | +197.67% | 67 |
| MU Micron Technology | 3.75% | 979.30 | -1.24% | +0.40% | +4.64% | +243.26% | 72 |
| CRDO Credo Technology Group Holding Ltd | 3.23% | 257.79 | -2.96% | +6.56% | +10.02% | +79.16% | 79 |
| NVTS Navitas Semiconductor Corp | 3.13% | 13.47 | -5.01% | -6.85% | -41.05% | +88.66% | 0 |
| ON On Semiconductor | 3.06% | 95.96 | -1.95% | +5.20% | -17.98% | +77.21% | 9 |
| SITM Sitime Corp | 3.05% | 628.94 | -2.96% | +4.53% | -4.64% | +78.07% | 47 |
| SMTC Semtech Corp | 2.93% | 136.13 | -1.00% | +0.64% | -13.58% | +84.73% | 21 |
| PENG Penguin Solutions Inc | 2.75% | 78.35 | -3.74% | +27.46% | +27.01% | +300.56% | 98 |
| SYNA Synaptics Inc | 2.64% | 126.76 | -2.12% | +6.06% | -3.15% | +71.25% | 53 |
| POWI Power Integratn | 2.56% | 72.07 | +1.75% | -1.26% | -3.53% | +104.19% | 49 |
| MTSI Macom Technology S | 2.49% | 308.52 | -2.78% | -4.26% | -13.99% | +80.13% | 16 |
| ALGM Allegro Microsystems Inc | 2.40% | 54.87 | -4.37% | -1.11% | +17.67% | +108.00% | 91 |
| QCOM Qualcomm Inc | 2.37% | 189.16 | -1.02% | +7.32% | -7.92% | +11.30% | 40 |
| LSCC Lattice Semicond | 2.36% | 137.44 | -1.50% | +0.67% | -0.09% | +86.79% | 60 |
| TXN Texas Instruments | 2.27% | 311.46 | +0.95% | +6.27% | +7.91% | +80.70% | 77 |
| NXPI Nxp Semiconductors | 2.27% | 292.26 | +0.59% | +6.91% | -1.73% | +35.34% | 58 |
| RMBS Rambus Inc | 2.23% | 112.10 | -1.78% | -0.73% | -23.66% | +21.99% | 5 |
| MPWR Monolithic Power Sys | 2.22% | 1352.74 | -1.56% | +5.01% | -11.70% | +49.55% | 28 |
| MCHP Microchip Technology | 2.20% | 88.59 | +0.37% | +4.67% | -3.15% | +39.85% | 51 |
| PI Impinj Inc | 1.99% | 144.03 | -0.26% | +1.73% | +15.19% | -17.23% | 84 |
| SWKS Skyworks Solutions | 1.98% | 60.38 | +0.72% | -3.48% | -17.92% | -2.81% | 12 |
| FSLR First Solar Inc | 1.97% | 227.83 | -0.29% | +1.45% | -13.11% | -12.79% | 23 |
| RGTI Rigetti Computing Inc | 1.93% | 16.54 | -2.65% | -7.80% | -16.00% | -25.33% | 14 |
| ADI Analog Devices | 1.93% | 395.65 | +0.51% | +4.90% | -2.22% | +46.35% | 56 |
| AMBA Ambarella Inc | 1.87% | 77.30 | -1.38% | -1.35% | +17.57% | +9.12% | 88 |
| QRVO Qorvo Inc | 1.86% | 85.81 | +0.42% | -2.01% | -12.39% | +1.54% | 26 |
| CRUS Cirrus Logic Inc | 1.77% | 150.36 | +0.29% | +2.82% | -8.36% | +26.89% | 37 |
| DIOD Diodes Inc | 1.72% | 96.38 | +1.67% | +0.14% | -6.89% | +95.34% | 44 |
| AVGO Broadcom Ltd | 1.66% | 399.97 | -0.28% | +10.96% | +1.99% | +15.81% | 70 |
| NVDA Nvidia Corp | 1.65% | 210.96 | +4.03% | +8.28% | +1.33% | +13.25% | 65 |
| SLAB Silicon Labs Inc | 1.58% | 218.63 | -0.02% | +0.19% | -0.08% | +67.28% | 63 |
| OLED Universal Display | 1.36% | 81.04 | +1.11% | +2.97% | -8.78% | -30.24% | 33 |
| WOLF Wolfspeed Inc | 1.21% | 35.29 | -5.26% | -11.78% | -27.65% | +102.70% | 2 |
| CEVA Ceva Inc | 1.06% | 45.54 | -2.73% | +12.67% | +5.76% | +111.62% | 74 |
| INDI Indie Semiconductor Cl A | 0.95% | 4.44 | -5.73% | +2.54% | +10.45% | +25.78% | 81 |
| SKYT Skywater Technology Inc | 0.90% | 32.54 | -2.55% | -4.96% | -7.43% | +79.19% | 42 |
| KOPN Kopin Corp | 0.75% | 3.90 | -4.65% | +0.00% | -20.89% | +66.67% | 7 |
| AOSL Alpha and Omega Semi | 0.72% | 37.56 | -1.11% | +1.21% | -8.46% | +89.60% | 35 |
| NVEC Nve Corp | 0.28% | 90.78 | -1.99% | -7.57% | -13.68% | +57.06% | 19 |
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.