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
IFX.DEInfineonEurope55.00+1.23%-3.42%-3.91%-32.90%+48.27%+69.75%EUR
TXNTexas InstrumentsUS260.67-1.05%-0.35%-7.86%-14.73%+34.06%+48.55%USD
STMSTMicroelectronicsEurope48.06+0.29%-6.77%-13.86%-35.53%+42.64%+79.82%USD
6723.TRenesas ElectronicsJapan3240.00+2.69%-2.26%-14.89%-27.63%+31.63%+90.53%JPY
MPWRMonolithic Power SystemsUS1147.61+0.45%-4.66%-18.95%-23.43%+7.80%+35.80%USD
ONonsemiUS66.60-9.02%-6.17%-20.12%-43.68%+9.22%+38.43%USD
ALGMAllegro MicroSystemsUS33.02-0.72%-7.87%-25.38%-38.04%+2.99%+10.55%USD

FAQ · from the current data · as of 2026-09-16

Power Semiconductors — data Q&A

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

7 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 2026-09-16: leading — Infineon (IFX.DE) -3.91%; Texas Instruments (TXN) -7.86%; STMicroelectronics (STM) -13.86%. Lagging — Allegro MicroSystems (ALGM) -25.38%; onsemi (ON) -20.12%; Monolithic Power Systems (MPWR) -18.95%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-09-16: Renesas Electronics (6723.T) +90.53%; STMicroelectronics (STM) +79.82%; Infineon (IFX.DE) +69.75%. Weakest: Allegro MicroSystems (ALGM) +10.55%; Monolithic Power Systems (MPWR) +35.80%; onsemi (ON) +38.43%.

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.