—
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
VICRVicorUS266.07+1.43%-13.87%+49.44%+5.52%+43.35%+416.64%USD
MPWRMonolithic Power SystemsUS1386.29+1.20%-3.71%+16.88%+7.35%+2.40%+41.85%USD
ONonsemiUS77.53-2.37%-8.67%+10.49%-14.21%+12.94%+52.38%USD
TXNTexas InstrumentsUS283.74-1.55%-3.42%+9.63%-4.97%+32.14%+58.67%USD
6723.TRenesas ElectronicsJapan3600.00-4.00%+0.70%+5.79%-24.11%+58.49%+91.90%JPY
IFX.DEInfineonEurope58.86-0.07%-8.94%+5.48%-18.05%+31.63%+85.24%EUR
STMSTMicroelectronicsEurope52.06-1.23%-9.08%+2.60%-23.97%+31.86%+81.21%USD
ALGMAllegro MicroSystemsUS35.57-1.93%-10.02%+0.85%-30.06%-5.15%+25.78%USD

FAQ · from the current data · as of 2026-10-09

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 2026-10-09: leading — Vicor (VICR) +49.44%; Monolithic Power Systems (MPWR) +16.88%; onsemi (ON) +10.49%. Lagging — Allegro MicroSystems (ALGM) +0.85%; STMicroelectronics (STM) +2.60%; Infineon (IFX.DE) +5.48%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-10-09: Vicor (VICR) +416.64%; Renesas Electronics (6723.T) +91.90%; Infineon (IFX.DE) +85.24%. Weakest: Allegro MicroSystems (ALGM) +25.78%; Monolithic Power Systems (MPWR) +41.85%; onsemi (ON) +52.38%.

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.