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Rubin Build-Out 100 · Sector S11 · Layer 4 · Infrastructure

Power Semiconductors

Power-management IC, GaN, SiC. Every megawatt the AI build-out adds requires the right power semis underneath.

Equal-weight — 1d —
Cap-weighted — 1d —
Momentum (drift) — 1d —
Constituents — in this sector

Composite Index — since inception (Dec 30, 2025)

Three weighting variants of the same constituent basket, rebased to 1,000 at inception. EW = ticker-equal-weight with quarterly drift. CW = cap-weighted (10% cap; below ten names the cap is infeasible, so the sub-index is equal weight by construction) with semi-annual rebalance. MW = drift-only (1/N at inception, market does the tilting between rebalances). Click a legend entry to toggle its line.

Constituents

Every Rubin constituent tagged into this sector. Click a row to open the stock detail page with full chart + Money-Temperature scoring.

Ticker Company Region Last 1d 1w 1m 3m 6m 1y CCY
TXNTexas InstrumentsUS298.12+4.72%+7.96%+7.21%+7.60%+10.62%+75.82%USD
ONonsemiUS74.06+2.51%+1.29%-4.07%-12.24%-24.46%+43.03%USD
IFX.DEInfineonEurope50.20+3.14%-4.42%-11.48%-7.86%-12.13%+47.52%EUR
ALGMAllegro MicroSystemsUS32.32+2.67%-2.56%-12.08%-27.40%-25.65%+4.29%USD
STMSTMicroelectronicsEurope45.19+2.66%-0.92%-12.98%-9.91%-10.62%+80.02%USD
MPWRMonolithic Power SystemsUS1167.27+2.38%-6.89%-14.64%-8.95%-26.47%+9.41%USD
6723.TRenesas ElectronicsJapan2783.50-3.57%-7.74%-20.24%-33.33%-0.41%+53.53%JPY
VICRVicorUS194.77+10.64%+2.14%-30.92%+1.38%-27.49%+109.48%USD

FAQ · from the current data · as of 2026-10-26

Power Semiconductors — data Q&A

What is the Power Semiconductors sub-index of the Rubin Build-Out 100?

8 constituents, listed across Europe, US, Japan, computed equal-weight, cap-weight and momentum-weight from the same basket and rebased to 1,000 at the index base date. Part of the Rubin Build-Out 100 — /indices/rubin/.

Which Power Semiconductors constituents lead and lag over one month?

As of 2026-10-26: leading — Texas Instruments (TXN) +7.21%; onsemi (ON) -4.07%; Infineon (IFX.DE) -11.48%. Lagging — Vicor (VICR) -30.92%; Renesas Electronics (6723.T) -20.24%; Monolithic Power Systems (MPWR) -14.64%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-10-26: Vicor (VICR) +109.48%; STMicroelectronics (STM) +80.02%; Texas Instruments (TXN) +75.82%. Weakest: Allegro MicroSystems (ALGM) +4.29%; Monolithic Power Systems (MPWR) +9.41%; onsemi (ON) +43.03%.

How often does this sub-index update, and is it advice?

The worker recomputes the sub-index and every constituent's returns after each US close (prices converted to USD for the index level; per-name returns stay in local currency). This page is a data surface in an investment research diary — it describes constituents and returns, it recommends nothing.