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 | +5.36% | +1.16 | +9pp | +2.51pp | Confirming ↑ |
| 1 month | +13.63% | +3.37 | +6pp | +1.81pp | Confirming ↑ |
| 1 quarter | +1.78% | +1.56 | +5pp | +1.46pp | Confirming ↑ |
Over the last 126 sessions: price up +55.40%, breadth up (+9.58/name) · % beating 49→54 · median−ETF -0.09pp→+1.38pp.
Dispersion by window
| Window | ETF | Median | Median − ETF | Up / Down | Beat / Lag | ±1% band | Dispersion |
|---|---|---|---|---|---|---|---|
| 1d | +1.09% | +0.21% | -0.88pp | 26 / 16 | 16 / 27 | 12 of 43 | ±2.81% |
| 5d | +5.36% | +5.52% | +0.15pp | 34 / 9 | 22 / 21 | 11 of 43 | ±6.49% |
| 21d | +13.63% | +14.02% | +0.39pp | 38 / 5 | 23 / 20 | 2 of 43 | ±15.62% |
| YTD | +73.73% | +59.39% | -14.34pp | 36 / 5 | 14 / 27 | 0 of 41 | ±74.55% |
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)
- ALAB+7.58%+0.34pp
- MRVL+5.81%+0.29pp
- MXL+3.61%+0.21pp
- MTSI+6.81%+0.17pp
- PENG+5.77%+0.16pp
- INTC-3.18%-0.12pp
- NVTS-3.00%-0.09pp
- MU-1.73%-0.06pp
- WOLF-5.07%-0.06pp
- POWI-1.77%-0.05pp
This month (21d)
- MXL+74.21%+4.28pp
- MRVL+28.39%+1.4pp
- AMD+35.98%+1.38pp
- ALAB+25.58%+1.15pp
- SMTC+33.34%+0.98pp
- FSLR-12.06%-0.24pp
- INDI-20.83%-0.2pp
- SKYT-6.78%-0.06pp
- OLED-3.25%-0.04pp
- RGTI-0.20%0pp
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)
- MXL+74.21%
- AMD+35.98%
- CEVA+34.21%
- RMBS+33.50%
- SMTC+33.34%
- INDI-20.83%
- FSLR-12.06%
- SKYT-6.78%
- OLED-3.25%
- RGTI-0.20%
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% | 109.30 | +3.61% | +17.88% | +74.21% | — | 98 |
| MRVL Marvell Technology Inc | 4.93% | 287.01 | +5.81% | +9.02% | +28.39% | +238.15% | 81 |
| ALAB Astera Labs Inc | 4.50% | 389.80 | +7.58% | +8.93% | +25.58% | +134.31% | 79 |
| AMD Adv Micro Devices | 3.84% | 649.42 | +2.80% | +6.89% | +35.98% | +203.24% | 95 |
| INTC Intel Corp | 3.84% | 112.50 | -3.18% | -2.96% | +17.43% | +204.88% | 67 |
| MU Micron Technology | 3.75% | 1045.56 | -1.73% | -1.83% | +2.85% | +266.49% | 16 |
| CRDO Credo Technology Group Holding Ltd | 3.23% | 220.83 | +3.93% | +14.81% | +29.47% | +53.47% | 84 |
| NVTS Navitas Semiconductor Corp | 3.13% | 11.97 | -3.00% | +2.05% | +1.44% | +67.65% | 14 |
| ON On Semiconductor | 3.06% | 86.31 | +0.44% | +13.64% | +16.04% | +59.39% | 56 |
| SITM Sitime Corp | 3.05% | 711.06 | +0.14% | +9.15% | +16.17% | +101.33% | 63 |
| SMTC Semtech Corp | 2.93% | 197.20 | +2.27% | +9.49% | +33.34% | +167.61% | 88 |
| PENG Penguin Solutions Inc | 2.75% | 64.21 | +5.77% | +15.09% | +24.05% | +228.27% | 77 |
| SYNA Synaptics Inc | 2.64% | 119.39 | -0.28% | +18.45% | +20.61% | +61.29% | 74 |
| POWI Power Integratn | 2.56% | 53.40 | -1.77% | +4.54% | +5.85% | +51.30% | 26 |
| MTSI Macom Technology S | 2.49% | 350.67 | +6.81% | +23.36% | +30.38% | +104.73% | 86 |
| ALGM Allegro Microsystems Inc | 2.40% | 38.76 | +0.78% | +5.90% | +5.87% | +46.93% | 28 |
| QCOM Qualcomm Inc | 2.37% | 181.03 | +0.13% | -1.67% | +7.28% | +6.51% | 35 |
| LSCC Lattice Semicond | 2.36% | 134.47 | +1.22% | +7.19% | +16.02% | +82.75% | 53 |
| TXN Texas Instruments | 2.27% | 297.23 | +0.79% | +5.52% | +15.01% | +72.44% | 51 |
| NXPI Nxp Semiconductors | 2.27% | 244.38 | +1.00% | +3.35% | +7.26% | +13.17% | 33 |
| RMBS Rambus Inc | 2.23% | 114.09 | +3.44% | +10.64% | +33.50% | +24.16% | 91 |
| MPWR Monolithic Power Sys | 2.22% | 1473.69 | -0.42% | +8.84% | +20.41% | +62.92% | 72 |
| MCHP Microchip Technology | 2.20% | 81.26 | -0.28% | +3.15% | +9.56% | +28.28% | 40 |
| PI Impinj Inc | 1.99% | 184.16 | -0.56% | +4.37% | +6.72% | +5.83% | 30 |
| SWKS Skyworks Solutions | 1.98% | 82.79 | -1.33% | -5.96% | +11.85% | +33.27% | 42 |
| FSLR First Solar Inc | 1.97% | 179.80 | +2.07% | +1.62% | -12.06% | -31.17% | 2 |
| RGTI Rigetti Computing Inc | 1.93% | 15.17 | +0.13% | -3.62% | -0.20% | -31.51% | 9 |
| ADI Analog Devices | 1.93% | 420.55 | +0.35% | +5.61% | +16.09% | +55.56% | 60 |
| AMBA Ambarella Inc | 1.87% | 67.94 | -0.47% | -1.15% | +8.03% | -4.09% | 37 |
| QRVO Qorvo Inc | 1.86% | 114.17 | +0.00% | -1.83% | +13.74% | +35.10% | 47 |
| CRUS Cirrus Logic Inc | 1.77% | 118.87 | -2.04% | -1.60% | +5.00% | +0.31% | 21 |
| DIOD Diodes Inc | 1.72% | 107.74 | +4.07% | +10.87% | +17.38% | +118.36% | 65 |
| AVGO Broadcom Ltd | 1.66% | 375.81 | +3.67% | +5.83% | +5.00% | +8.81% | 23 |
| NVDA Nvidia Corp | 1.65% | 239.24 | +0.14% | +5.29% | +3.97% | +28.44% | 19 |
| SLAB Silicon Labs Inc | 1.58% | 222.62 | -0.08% | +0.66% | +0.92% | +70.33% | 12 |
| OLED Universal Display | 1.36% | 79.66 | -0.18% | +4.60% | -3.25% | -31.43% | 7 |
| WOLF Wolfspeed Inc | 1.21% | 31.83 | -5.07% | +13.15% | +12.28% | +82.83% | 44 |
| CEVA Ceva Inc | 1.06% | 36.17 | -1.34% | +4.90% | +34.21% | +68.08% | 93 |
| INDI Indie Semiconductor Cl A | 0.95% | 2.85 | -2.06% | -3.72% | -20.83% | -19.26% | 0 |
| SKYT Skywater Technology Inc | 0.90% | 32.46 | +6.15% | +5.66% | -6.78% | +78.74% | 5 |
| KOPN Kopin Corp | 0.75% | 4.88 | +0.21% | +2.74% | +14.02% | +108.55% | 49 |
| AOSL Alpha and Omega Semi | 0.72% | 29.94 | +3.24% | +8.44% | +18.81% | +51.14% | 70 |
| NVEC Nve Corp | 0.28% | 116.53 | +2.10% | +4.92% | +16.07% | — | 58 |
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 2026-10-06: over 21 sessions the fund returned +13.63% while its median constituent returned +14.02% — a dispersion of 15.62 pp; 53% 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 2026-10-06: fund +1.09%, median member +0.21%, 26 advancers vs 16 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.