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 | +5.53% | +1.28 | -7pp | +0.87pp | Confirming ↑ |
| 1 month | +7.29% | +2.37 | -24pp | -4.66pp | Confirming ↑ |
| 1 quarter | -11.86% | -1.09 | -18pp | -3.18pp | Confirming ↓ |
Over the last 126 sessions: price up +60.42%, breadth up (+9.05/name) · % beating 42→31 · median−ETF -1.16pp→-3.94pp.
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | -0.14% | -0.53% | -0.39pp | 17 / 24 | 19 / 24 | 16 of 43 | ±2.79% |
| 5d | +5.53% | +5.50% | -0.03pp | 35 / 8 | 21 / 22 | 8 of 43 | ±7.39% |
| 21d | +7.29% | +2.71% | -4.58pp | 31 / 12 | 13 / 30 | 4 of 43 | ±14.96% |
| YTD | +63.87% | +41.52% | -22.34pp | 36 / 5 | 15 / 26 | 0 of 41 | ±72.02% |
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)
- SITM+5.64%+0.17pp
- INTC+3.91%+0.15pp
- AMD+2.38%+0.09pp
- SMTC+3.05%+0.09pp
- MTSI+3.30%+0.08pp
- FSLR-10.32%-0.2pp
- SWKS-3.98%-0.08pp
- OLED-4.26%-0.06pp
- NXPI-2.24%-0.05pp
- QRVO-2.72%-0.05pp
This month (21d)
- INTC+45.62%+1.75pp
- MXL+28.56%+1.65pp
- ALAB+27.55%+1.24pp
- AMD+31.32%+1.2pp
- SMTC+36.84%+1.08pp
- CRDO-13.48%-0.44pp
- FSLR-16.76%-0.33pp
- OLED-17.83%-0.24pp
- INDI-22.98%-0.22pp
- POWI-6.66%-0.17pp
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)
- INTC+45.62%
- SMTC+36.84%
- SWKS+33.65%
- AMD+31.32%
- MXL+28.56%
- INDI-22.98%
- OLED-17.83%
- FSLR-16.76%
- CRDO-13.48%
- SKYT-6.78%
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% | 85.31 | +1.17% | +13.76% | +28.56% | — | 88 |
| MRVL Marvell Technology Inc | 4.93% | 258.95 | -0.75% | +7.56% | +7.73% | +205.09% | 70 |
| ALAB Astera Labs Inc | 4.50% | 360.51 | +0.01% | +22.81% | +27.55% | +116.70% | 86 |
| AMD Adv Micro Devices | 3.84% | 629.26 | +2.38% | +15.44% | +31.32% | +193.83% | 91 |
| INTC Intel Corp | 3.84% | 127.39 | +3.91% | +17.09% | +45.62% | +245.23% | 98 |
| MU Micron Technology | 3.75% | 1080.53 | +0.81% | +10.54% | +15.82% | +278.75% | 74 |
| CRDO Credo Technology Group Holding Ltd | 3.23% | 195.97 | +1.08% | +16.48% | -13.48% | +36.19% | 7 |
| NVTS Navitas Semiconductor Corp | 3.13% | 11.84 | +0.00% | +6.28% | -4.82% | +65.83% | 16 |
| ON On Semiconductor | 3.06% | 73.15 | -1.28% | +7.10% | +0.88% | +35.09% | 30 |
| SITM Sitime Corp | 3.05% | 643.24 | +5.64% | +7.46% | +8.27% | +82.12% | 72 |
| SMTC Semtech Corp | 2.93% | 174.50 | +3.05% | -2.07% | +36.84% | +136.80% | 95 |
| PENG Penguin Solutions Inc | 2.75% | 53.08 | -1.48% | +1.01% | +5.36% | +171.37% | 58 |
| SYNA Synaptics Inc | 2.64% | 96.82 | -1.30% | +6.26% | +2.06% | +30.80% | 40 |
| POWI Power Integratn | 2.56% | 50.78 | -0.53% | +3.32% | -6.66% | +43.87% | 12 |
| MTSI Macom Technology S | 2.49% | 284.94 | +3.30% | +8.28% | +7.01% | +66.36% | 67 |
| ALGM Allegro Microsystems Inc | 2.40% | 35.13 | +0.06% | +6.10% | -6.17% | +33.17% | 14 |
| QCOM Qualcomm Inc | 2.37% | 194.26 | -1.51% | +2.94% | +21.65% | +14.30% | 79 |
| LSCC Lattice Semicond | 2.36% | 122.22 | +0.46% | +12.61% | +5.27% | +66.10% | 56 |
| TXN Texas Instruments | 2.27% | 270.65 | -0.72% | +4.85% | +4.08% | +57.02% | 53 |
| NXPI Nxp Semiconductors | 2.27% | 230.16 | -2.24% | +0.97% | +2.41% | +6.59% | 42 |
| RMBS Rambus Inc | 2.23% | 104.55 | +1.04% | +21.75% | +16.35% | +13.78% | 77 |
| MPWR Monolithic Power Sys | 2.22% | 1335.55 | -1.47% | +14.19% | +2.41% | +47.65% | 44 |
| MCHP Microchip Technology | 2.20% | 74.69 | -1.11% | +5.46% | +1.62% | +17.91% | 35 |
| PI Impinj Inc | 1.99% | 176.57 | -0.36% | -1.76% | +6.23% | +1.47% | 63 |
| SWKS Skyworks Solutions | 1.98% | 87.81 | -3.98% | -3.84% | +33.65% | +41.35% | 93 |
| FSLR First Solar Inc | 1.97% | 172.16 | -10.32% | -14.42% | -16.76% | -34.10% | 5 |
| RGTI Rigetti Computing Inc | 1.93% | 16.50 | +3.09% | +3.19% | -2.60% | -25.51% | 19 |
| ADI Analog Devices | 1.93% | 382.61 | -0.68% | +5.50% | +2.71% | +41.52% | 49 |
| AMBA Ambarella Inc | 1.87% | 69.86 | +3.31% | +4.41% | -1.30% | -1.38% | 23 |
| QRVO Qorvo Inc | 1.86% | 116.34 | -2.72% | -2.65% | +23.32% | +37.66% | 81 |
| CRUS Cirrus Logic Inc | 1.77% | 118.80 | -1.37% | -1.30% | +6.61% | +0.25% | 65 |
| DIOD Diodes Inc | 1.72% | 94.74 | -0.81% | +4.35% | +1.93% | +92.01% | 37 |
| AVGO Broadcom Ltd | 1.66% | 350.36 | -1.30% | +1.06% | -1.79% | +1.44% | 21 |
| NVDA Nvidia Corp | 1.65% | 224.58 | -0.41% | +2.39% | +5.41% | +20.57% | 60 |
| SLAB Silicon Labs Inc | 1.58% | 221.38 | +0.06% | +0.76% | +1.38% | +69.38% | 33 |
| OLED Universal Display | 1.36% | 73.44 | -4.26% | -5.03% | -17.83% | -36.78% | 2 |
| WOLF Wolfspeed Inc | 1.21% | 26.30 | -3.10% | +10.78% | +3.99% | +51.06% | 51 |
| CEVA Ceva Inc | 1.06% | 34.46 | +2.50% | +15.52% | +27.25% | +60.13% | 84 |
| INDI Indie Semiconductor Cl A | 0.95% | 3.05 | -0.65% | -2.56% | -22.98% | -13.60% | 0 |
| SKYT Skywater Technology Inc | 0.90% | 32.46 | +6.15% | +5.66% | -6.78% | +78.74% | 9 |
| KOPN Kopin Corp | 0.75% | 4.87 | +0.00% | +2.96% | +0.83% | +108.12% | 28 |
| AOSL Alpha and Omega Semi | 0.72% | 27.31 | -1.44% | +8.33% | +2.59% | +37.86% | 47 |
| NVEC Nve Corp | 0.28% | 106.65 | -1.99% | +6.07% | -0.18% | — | 26 |
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 2026-09-24: over 21 sessions the fund returned +7.29% while its median constituent returned +2.71% — a dispersion of 14.96 pp; 30% of 43 members beat the fund. Broad advance - breadth is rising with price.
How did XSD's members trade in the last session?
As of 2026-09-24: fund -0.14%, median member -0.53%, 17 advancers vs 24 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 Closelooknet lake.
Is this investment advice?
No — a data surface in an investment research diary. It describes breadth inside a fund; it makes no recommendation.