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 | -3.42% | -0.6 | +0pp | -0.05pp | Confirming ↓ |
| 1 month | -11.30% | -1.81 | -4pp | -0.84pp | Confirming ↓ |
| 1 quarter | -21.62% | -3.74 | +4pp | +1.93pp | Confirming ↓ |
Over the last 126 sessions: price up +42.33%, breadth up (+7.23/name) · % beating 60→48 · median−ETF +1.29pp→-0.48pp.
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | -6.12% | -5.90% | +0.22pp | 1 / 41 | 24 / 19 | 10 of 43 | ±3.85% |
| 5d | -3.42% | -3.13% | +0.30pp | 15 / 28 | 22 / 21 | 7 of 43 | ±5.97% |
| 21d | -11.30% | -11.42% | -0.12pp | 6 / 37 | 21 / 22 | 2 of 43 | ±11.35% |
| YTD | +47.66% | +29.09% | -18.57pp | 32 / 9 | 14 / 27 | 0 of 41 | ±55.79% |
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)
- SKYT+6.15%+0.06pp
- MXL-13.12%-0.76pp
- ALAB-11.74%-0.53pp
- SITM-12.16%-0.37pp
- MRVL-7.32%-0.36pp
- SMTC-12.07%-0.35pp
This month (21d)
- SMTC+10.08%+0.3pp
- SWKS+13.62%+0.27pp
- QCOM+9.32%+0.22pp
- QRVO+9.69%+0.18pp
- AMD+2.15%+0.08pp
- CRDO-43.57%-1.41pp
- ALAB-20.37%-0.92pp
- MXL-15.47%-0.89pp
- PENG-23.50%-0.65pp
- NVTS-20.28%-0.63pp
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)
- SWKS+13.62%
- SMTC+10.08%
- QRVO+9.69%
- QCOM+9.32%
- AMD+2.15%
- CRDO-43.57%
- INDI-24.40%
- WOLF-23.96%
- PENG-23.50%
- ALGM-23.29%
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% | 64.79 | -13.12% | +3.27% | -15.47% | — | 44 |
| MRVL Marvell Technology Inc | 4.93% | 218.82 | -7.32% | -2.12% | -1.51% | +157.81% | 84 |
| ALAB Astera Labs Inc | 4.50% | 257.04 | -11.74% | -17.19% | -20.37% | +54.51% | 21 |
| AMD Adv Micro Devices | 3.84% | 493.41 | -4.40% | +3.32% | +2.15% | +130.39% | 88 |
| INTC Intel Corp | 3.84% | 97.19 | -5.59% | +1.45% | -7.05% | +163.39% | 63 |
| MU Micron Technology | 3.75% | 924.03 | -5.25% | -9.10% | -2.72% | +223.89% | 81 |
| CRDO Credo Technology Group Holding Ltd | 3.23% | 150.09 | -7.89% | -12.01% | -43.57% | +4.31% | 0 |
| NVTS Navitas Semiconductor Corp | 3.13% | 10.89 | -6.36% | -7.71% | -20.28% | +52.52% | 23 |
| ON On Semiconductor | 3.06% | 71.65 | -5.90% | -3.67% | -12.15% | +32.32% | 47 |
| SITM Sitime Corp | 3.05% | 558.35 | -12.16% | -8.78% | -18.84% | +58.09% | 28 |
| SMTC Semtech Corp | 2.93% | 147.05 | -12.07% | -0.57% | +10.08% | +99.55% | 95 |
| PENG Penguin Solutions Inc | 2.75% | 46.59 | -8.93% | -9.99% | -23.50% | +138.19% | 7 |
| SYNA Synaptics Inc | 2.64% | 95.06 | -5.91% | -3.97% | -11.42% | +28.42% | 49 |
| POWI Power Integratn | 2.56% | 48.51 | -7.21% | -3.85% | -22.15% | +37.44% | 12 |
| MTSI Macom Technology S | 2.49% | 239.62 | -12.83% | -10.91% | -21.96% | +39.90% | 14 |
| ALGM Allegro Microsystems Inc | 2.40% | 33.85 | -6.77% | -7.54% | -23.29% | +28.32% | 9 |
| QCOM Qualcomm Inc | 2.37% | 180.15 | -1.00% | +6.76% | +9.32% | +6.00% | 91 |
| LSCC Lattice Semicond | 2.36% | 106.50 | -11.07% | -8.11% | -17.08% | +44.74% | 35 |
| TXN Texas Instruments | 2.27% | 263.42 | -1.97% | +1.93% | -3.66% | +52.83% | 74 |
| NXPI Nxp Semiconductors | 2.27% | 224.23 | -5.24% | -1.58% | -3.31% | +3.84% | 77 |
| RMBS Rambus Inc | 2.23% | 80.39 | -7.57% | -5.93% | -19.07% | -12.51% | 26 |
| MPWR Monolithic Power Sys | 2.22% | 1143.24 | -7.39% | -6.59% | -16.10% | +26.39% | 40 |
| MCHP Microchip Technology | 2.20% | 71.48 | -3.67% | -3.63% | -7.99% | +12.84% | 56 |
| PI Impinj Inc | 1.99% | 173.09 | -2.11% | +0.30% | -3.20% | -0.53% | 79 |
| SWKS Skyworks Solutions | 1.98% | 79.26 | -10.29% | +7.08% | +13.62% | +27.58% | 98 |
| FSLR First Solar Inc | 1.97% | 207.04 | -0.95% | +1.27% | -7.44% | -20.74% | 58 |
| RGTI Rigetti Computing Inc | 1.93% | 15.27 | +0.00% | +0.46% | -17.99% | -31.06% | 30 |
| ADI Analog Devices | 1.93% | 361.02 | -4.69% | -0.34% | -5.29% | +33.54% | 70 |
| AMBA Ambarella Inc | 1.87% | 63.98 | -5.72% | +1.73% | -21.94% | -9.68% | 16 |
| QRVO Qorvo Inc | 1.86% | 107.98 | -7.43% | +5.00% | +9.69% | +27.77% | 93 |
| CRUS Cirrus Logic Inc | 1.77% | 116.34 | -2.06% | +2.76% | -4.03% | -1.82% | 72 |
| DIOD Diodes Inc | 1.72% | 90.31 | -4.95% | -1.61% | -7.08% | +83.04% | 60 |
| AVGO Broadcom Ltd | 1.66% | 344.72 | -4.77% | -3.68% | -17.50% | -0.19% | 33 |
| NVDA Nvidia Corp | 1.65% | 210.96 | -3.36% | -8.32% | -6.36% | +13.25% | 67 |
| SLAB Silicon Labs Inc | 1.58% | 219.28 | -0.48% | -0.59% | +0.45% | +67.77% | 86 |
| OLED Universal Display | 1.36% | 76.62 | -8.31% | -6.95% | -15.77% | -34.04% | 42 |
| WOLF Wolfspeed Inc | 1.21% | 23.96 | -7.56% | -15.49% | -23.96% | +37.62% | 5 |
| CEVA Ceva Inc | 1.06% | 27.78 | -4.24% | +3.08% | -8.53% | +29.09% | 53 |
| INDI Indie Semiconductor Cl A | 0.95% | 3.13 | -6.57% | -13.06% | -24.40% | -11.33% | 2 |
| SKYT Skywater Technology Inc | 0.90% | 32.46 | +6.15% | +5.66% | -6.78% | +78.74% | 65 |
| KOPN Kopin Corp | 0.75% | 4.35 | -4.61% | +1.64% | -9.94% | +85.90% | 51 |
| AOSL Alpha and Omega Semi | 0.72% | 24.22 | -6.05% | -3.89% | -20.90% | +22.26% | 19 |
| NVEC Nve Corp | 0.28% | 97.26 | -3.23% | -3.13% | -16.39% | — | 37 |
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
XSD dispersion — data Q&A
Is XSD's move broad or carried by a few names (21 sessions)?
As of 2026-09-14: over 21 sessions the fund returned -11.30% while its median constituent returned -11.42% — a dispersion of 11.35 pp; 49% of 43 members beat the fund. Broad decline - breadth is falling with price.
How did XSD's members trade in the last session?
As of 2026-09-14: fund -6.12%, median member -5.90%, 1 advancers vs 41 decliners.
What does the dispersion page for XSD 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. 43 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.