Reference Portfolio · Updated
Rubin Sector Rotation
Active sector-tilt portfolio driven by T3b top-sector-change signals. Notional 500k USD. Inception 2026-05-01.
Thesis
Rubin Sector Rotation is the active counterpart to the two passive Rubin portfolios. It starts from an equal-weight base across all Rubin-Index sectors, then applies tilts based on the T3b sector-rank signal: top-3 sectors by 5-day mean return get 1.5× weight, rank 4–6 stay neutral, rank 7–end get 0.5×, and bottom-3 sectors go to zero. Rebalances fire on every top-3 or bottom-3 sector-rank-change event — event-driven, not calendar-driven. Over time the portfolio concentrates exposure in whatever is leading the Rubin universe and cuts what's lagging, with a cooldown rule to prevent whipsaw.
Inception: 2026-05-01 — the first trading day of the public track record. Notional 500,000 USD. Earlier backtests would be backtested-based-on-a-signal-that-didn't-exist-yet, which is not management skill — performance tracking starts only when the signal was live and the portfolio was actually deployed. Composition evolves as signals fire; the move log below shows every rebalance with the triggering signal attached.
See the Tape for the underlying T3b signal history. Expect more turnover than the passive variants and a return profile that reflects the T3b-signal quality — this is active management with a specific, reproducible rulebook.
Structure
- Equities61
61 equity positions · US, Japan, Austria, Taiwan, Germany, Switzerland, Singapore/HK, France, Finland, Italy, UK, Netherlands . Benchmark: Rubin Build-Out EW (as the no-tilt baseline) (CL-RUBIN-EW).
Top Holdings
61 total positions — top 10 by weight shown. Tracker portfolio — prices and constituents from the Rubin index worker.
| # | Symbol | Name | Weight |
|---|---|---|---|
| 1 | 285A.T | Kioxia | 27.75% |
| 2 | 4062.T | Ibiden | 10.38% |
| 3 | LPK.DE | LPKF Laser & Electronics | 3.49% |
| 4 | SOI.PA | Soitec | 3.34% |
| 5 | INTC | Intel | 3.33% |
| 6 | 6981.T | Murata Manufacturing | 2.70% |
| 7 | ATS.VI | AT&S | 2.54% |
| 8 | 6367.T | Daikin | 2.38% |
| 9 | SNDK | SanDisk | 2.34% |
| 10 | 3037.TW | Unimicron | 2.06% |
Composition
61 positions grouped by segment. All values in USD. Tracker portfolio — prices and constituents from the Rubin index worker (EODHD-primary, daily after US close). Snapshot from May 20, 2026.
Equities (USD)
| # | Symbol | Name | Units | Price | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 285A.T | Kioxia | 740.61 | 313.33 | 232,056.68 | 18,663.48 | 213,393.20 | +1143.37% | 0.00 | +0.00% | 27.75% |
| 2 | 3436.T | Sumco | 340.53 | 18.63 | 6,344.02 | 11,067.13 | -4,723.11 | -42.68% | 0.00 | +0.00% | 0.76% |
| 3 | 4062.T | Ibiden | 899.58 | 96.45 | 86,764.76 | 19,341.03 | 67,423.73 | +348.60% | 0.00 | +0.00% | 10.38% |
| 4 | 6367.T | Daikin | 132.96 | 149.39 | 19,862.77 | 1,922.59 | 17,940.18 | +933.13% | 0.00 | +0.00% | 2.38% |
| 5 | 6857.T | Advantest | 16.55 | 159.21 | 2,634.16 | 2,987.89 | -353.73 | -11.84% | 0.00 | +0.00% | 0.32% |
| 6 | 6920.T | Lasertec | 44.95 | 227.02 | 10,204.91 | 2,458.85 | 7,746.06 | +315.03% | 0.00 | +0.00% | 1.22% |
| 7 | 6981.T | Murata Manufacturing | 580.24 | 38.91 | 22,577.06 | 9,463.68 | 13,113.38 | +138.57% | 0.00 | +0.00% | 2.70% |
| 8 | 7911.T | Toppan Holdings | 177.39 | 27.67 | 4,908.28 | 2,841.73 | 2,066.55 | +72.72% | 0.00 | +0.00% | 0.59% |
| 9 | AAOI | Applied Optoelectronics | 72.10 | 171.33 | 12,352.72 | 13,230.89 | -878.17 | -6.64% | 0.00 | +0.00% | 1.48% |
| 10 | ACLS | Axcelis Technologies | 39.12 | 143.23 | 5,602.96 | 5,476.21 | 126.75 | +2.31% | 0.00 | +0.00% | 0.67% |
| 11 | AEHR | Aehr Test Systems | 170.60 | 81.14 | 13,842.18 | 15,877.39 | -2,035.21 | -12.82% | 0.00 | +0.00% | 1.66% |
| 12 | AEIS | Advanced Energy | 5.11 | 302.84 | 1,546.42 | 1,986.66 | -440.24 | -22.16% | 0.00 | +0.00% | 0.18% |
| 13 | ALAB | Astera Labs | 52.57 | 244.26 | 12,841.07 | 10,655.16 | 2,185.91 | +20.52% | 0.00 | +0.00% | 1.54% |
| 14 | ALGM | Allegro MicroSystems | 226.09 | 41.65 | 9,416.56 | 11,073.78 | -1,657.22 | -14.97% | 0.00 | +0.00% | 1.13% |
| 15 | AMD | AMD | 23.32 | 414.05 | 9,657.30 | 8,409.23 | 1,248.07 | +14.84% | 0.00 | +0.00% | 1.16% |
| 16 | AMKR | Amkor Technology | 87.52 | 65.54 | 5,736.38 | 6,222.14 | -485.76 | -7.81% | 0.00 | +0.00% | 0.69% |
| 17 | ARM | ARM Holdings | 20.15 | 223.15 | 4,495.94 | 4,254.77 | 241.17 | +5.67% | 0.00 | +0.00% | 0.54% |
| 18 | ASX | ASE Group | 150.85 | 30.89 | 4,659.66 | 4,765.25 | -105.59 | -2.22% | 0.00 | +0.00% | 0.56% |
| 19 | AVGO | Broadcom | 9.60 | 411.07 | 3,945.16 | 4,043.14 | -97.98 | -2.42% | 0.00 | +0.00% | 0.47% |
| 20 | CARR | Carrier Global | 32.76 | 61.44 | 2,012.90 | 2,215.37 | -202.47 | -9.14% | 0.00 | +0.00% | 0.24% |
| 21 | CDNS | Cadence Design Systems | 7.48 | 338.12 | 2,528.43 | 2,549.52 | -21.09 | -0.83% | 0.00 | +0.00% | 0.30% |
| 22 | COHU | Cohu | 111.62 | 42.77 | 4,773.83 | 5,088.59 | -314.76 | -6.19% | 0.00 | +0.00% | 0.57% |
| 23 | CRDO | Credo Technology | 58.81 | 168.99 | 9,939.15 | 10,844.31 | -905.16 | -8.35% | 0.00 | +0.00% | 1.19% |
| 24 | FORM | FormFactor | 30.93 | 117.20 | 3,624.79 | 4,248.61 | -623.82 | -14.68% | 0.00 | +0.00% | 0.43% |
| 25 | GFS | GlobalFoundries | 84.64 | 66.68 | 5,643.82 | 5,494.01 | 149.81 | +2.73% | 0.00 | +0.00% | 0.68% |
| 26 | INTC | Intel | 250.95 | 110.80 | 27,805.66 | 25,000.00 | 2,805.66 | +11.22% | 0.00 | +0.00% | 3.33% |
| 27 | LRCX | Lam Research | 7.16 | 273.38 | 1,957.73 | 1,838.43 | 119.30 | +6.49% | 0.00 | +0.00% | 0.23% |
| 28 | MKSI | MKS Instruments | 7.75 | 294.04 | 2,277.34 | 2,163.79 | 113.55 | +5.25% | 0.00 | +0.00% | 0.27% |
| 29 | MOD | Modine Manufacturing | 8.67 | 244.49 | 2,119.41 | 2,313.06 | -193.65 | -8.37% | 0.00 | +0.00% | 0.25% |
| 30 | MPWR | Monolithic Power Systems | 6.16 | 1,468.11 | 9,036.51 | 9,746.66 | -710.15 | -7.29% | 0.00 | +0.00% | 1.08% |
| 31 | MRVL | Marvell Technology | 38.96 | 176.27 | 6,867.87 | 6,426.81 | 441.06 | +6.86% | 0.00 | +0.00% | 0.82% |
| 32 | MU | Micron Technology | 20.56 | 698.74 | 14,365.40 | 11,147.31 | 3,218.09 | +28.87% | 0.00 | +0.00% | 1.72% |
| 33 | NOK | Nokia | 542.33 | 13.67 | 7,413.67 | 7,213.01 | 200.66 | +2.78% | 0.00 | +0.00% | 0.89% |
| 34 | NVT | nVent Electric | 23.12 | 158.23 | 3,658.72 | 3,674.67 | -15.95 | -0.43% | 0.00 | +0.00% | 0.44% |
| 35 | ON | onsemi | 149.84 | 106.02 | 15,885.73 | 15,437.72 | 448.01 | +2.90% | 0.00 | +0.00% | 1.90% |
| 36 | ONTO | Onto Innovation | 15.40 | 248.08 | 3,819.44 | 4,509.81 | -690.37 | -15.31% | 0.00 | +0.00% | 0.46% |
| 37 | PDFS | PDF Solutions | 88.11 | 42.57 | 3,751.01 | 3,925.48 | -174.47 | -4.44% | 0.00 | +0.00% | 0.45% |
| 38 | PLAB | Photronics | 53.22 | 45.77 | 2,435.70 | 2,669.32 | -233.62 | -8.75% | 0.00 | +0.00% | 0.29% |
| 39 | QCOM | Qualcomm | 25.96 | 195.61 | 5,077.10 | 4,594.33 | 482.77 | +10.51% | 0.00 | +0.00% | 0.61% |
| 40 | SNDK | SanDisk | 14.14 | 1,383.29 | 19,555.02 | 16,780.09 | 2,774.93 | +16.54% | 0.00 | +0.00% | 2.34% |
| 41 | SNPS | Synopsys | 5.59 | 493.87 | 2,762.17 | 2,735.05 | 27.12 | +0.99% | 0.00 | +0.00% | 0.33% |
| 42 | STM | STMicroelectronics | 259.43 | 61.23 | 15,885.19 | 14,463.49 | 1,421.70 | +9.83% | 0.00 | +0.00% | 1.90% |
| 43 | TXN | Texas Instruments | 36.12 | 302.31 | 10,918.80 | 10,149.85 | 768.95 | +7.58% | 0.00 | +0.00% | 1.31% |
| 44 | VRT | Vertiv | 9.52 | 322.63 | 3,071.41 | 3,125.47 | -54.06 | -1.73% | 0.00 | +0.00% | 0.37% |
| — | TOTAL | — | — | — | 656,635.79 | 333,095.76 | 323,540.03 | +97.13% | — | — | 78.58% |
Equities (EUR)
| # | Symbol | Name | Units | Price | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 8035.T | Tokyo Electron | 10.73 | 296.90 | 3,186.21 | 3,218.72 | -32.51 | -1.01% | 0.00 | +0.00% | 0.38% |
| 2 | AIXA.DE | Aixtron | 94.49 | 58.15 | 5,494.47 | 5,212.90 | 281.57 | +5.40% | 0.00 | +0.00% | 0.66% |
| 3 | ASM.AS | ASM International | 3.83 | 970.81 | 3,721.89 | 3,739.24 | -17.35 | -0.46% | 0.00 | +0.00% | 0.45% |
| 4 | ATS.VI | AT&S | 176.12 | 120.48 | 21,219.12 | 19,399.78 | 1,819.34 | +9.38% | 0.00 | +0.00% | 2.54% |
| 5 | IFX.DE | Infineon | 186.07 | 75.17 | 13,986.96 | 12,483.51 | 1,503.45 | +12.04% | 0.00 | +0.00% | 1.67% |
| 6 | LPK.DE | LPKF Laser & Electronics | 1286.67 | 22.68 | 29,181.68 | 25,000.00 | 4,181.68 | +16.73% | 0.00 | +0.00% | 3.49% |
| 7 | SMHN.DE | SÜSS MicroTec | 73.45 | 99.43 | 7,303.06 | 6,572.24 | 730.82 | +11.12% | 0.00 | +0.00% | 0.87% |
| 8 | SOI.PA | Soitec | 167.71 | 166.47 | 27,918.08 | 25,000.00 | 2,918.08 | +11.67% | 0.00 | +0.00% | 3.34% |
| 9 | SU.PA | Schneider Electric | 6.73 | 297.48 | 2,000.70 | 2,121.29 | -120.59 | -5.68% | 0.00 | +0.00% | 0.24% |
| 10 | TPRO.MI | Technoprobe | 152.56 | 32.38 | 4,939.75 | 3,301.30 | 1,638.45 | +49.63% | 0.00 | +0.00% | 0.59% |
| 11 | WAF.DE | Siltronic | 128.38 | 98.33 | 12,623.70 | 12,015.18 | 608.52 | +5.06% | 0.00 | +0.00% | 1.51% |
| — | TOTAL | — | — | — | 131,575.62 | 118,064.16 | 13,511.46 | +11.44% | — | — | 15.74% |
Equities (TWD)
| # | Symbol | Name | Units | Price | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2308.TW | Delta Electronics | 78.63 | 60.57 | 4,762.55 | 5,384.51 | -621.96 | -11.55% | 0.00 | +0.00% | 0.57% |
| 2 | 3037.TW | Unimicron | 664.57 | 25.87 | 17,192.53 | 18,561.55 | -1,369.02 | -7.38% | 0.00 | +0.00% | 2.06% |
| — | TOTAL | — | — | — | 21,955.08 | 23,946.06 | -1,990.98 | -8.31% | — | — | 2.63% |
Equities (HKD)
| # | Symbol | Name | Units | Price | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0522.HK | ASMPT | 603.57 | 21.60 | 13,037.14 | 12,566.35 | 470.79 | +3.75% | 0.00 | +0.00% | 1.56% |
| — | TOTAL | — | — | — | 13,037.14 | 12,566.35 | 470.79 | +3.75% | — | — | 1.56% |
Equities (CHF)
| # | Symbol | Name | Units | Price | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | COTN.SW | Comet Group | 8.55 | 420.18 | 3,591.11 | 3,357.45 | 233.66 | +6.96% | 0.00 | +0.00% | 0.43% |
| 2 | IFCN.SW | INFICON | 33.38 | 195.47 | 6,524.69 | 6,167.86 | 356.83 | +5.79% | 0.00 | +0.00% | 0.78% |
| 3 | VACN.SW | VAT Group | 3.76 | 744.02 | 2,794.84 | 2,802.34 | -7.50 | -0.27% | 0.00 | +0.00% | 0.33% |
| — | TOTAL | — | — | — | 12,910.64 | 12,327.65 | 582.99 | +4.73% | — | — | 1.54% |
Summary
| Group | Mkt Value | Cost Basis | Unrealized | % Unr | Realized | % Rlz | % Port |
|---|---|---|---|---|---|---|---|
| Equities (USD) | 656,635.79 | 333,095.76 | 323,540.03 | +97.13% | — | — | 78.58% |
| Equities (EUR) | 131,575.62 | 118,064.16 | 13,511.46 | +11.44% | — | — | 15.74% |
| Equities (TWD) | 21,955.08 | 23,946.06 | -1,990.98 | -8.31% | — | — | 2.63% |
| Equities (HKD) | 13,037.14 | 12,566.35 | 470.79 | +3.75% | — | — | 1.56% |
| Equities (CHF) | 12,910.64 | 12,327.65 | 582.99 | +4.73% | — | — | 1.54% |
| TOTAL (USD) | 836,114.27 | 499,999.98 | 336,114.29 | +67.22% | 0.00 | — | — |
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Methodology & disclaimer
Rubin Sector Rotation is a reference portfolio — it reflects how Thomas Look, author and publisher of Closelook, implements the analytical theses discussed on this site. Position data is updated daily from end-of-day broker exports (Barchart). Benchmark prices come from EODHD.
Reference portfolio, educational purpose only. Not investment advice. Active rule-based rotation — performance reflects signal quality + rebalance cadence.
Reference portfolio, not investment advice. Past performance is not indicative of future results. Closelook Venture GmbH is a publishing company and does not manage client capital.