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.DEInfineonEurope55.86+2.68%-4.61%+0.81%-30.66%+45.13%+70.63%EUR
TXNTexas InstrumentsUS266.64+3.29%-0.77%-0.30%-17.41%+41.61%+50.18%USD
STMSTMicroelectronicsEurope50.18+3.23%-2.58%-0.46%-35.99%+55.22%+86.30%USD
6723.TRenesas ElectronicsJapan3309.00+4.45%+3.67%-4.61%-30.10%+33.27%+99.04%JPY
MPWRMonolithic Power SystemsUS1217.80+4.12%-1.35%-6.33%-22.12%+11.67%+39.51%USD
ONonsemiUS69.98+2.46%-8.09%-8.62%-42.46%+18.03%+40.52%USD
ALGMAllegro MicroSystemsUS34.10+2.99%-6.09%-11.08%-42.20%+10.32%+10.89%USD

FAQ · from the current data · as of 2026-09-18

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 2026-09-18: leading — Infineon (IFX.DE) +0.81%; Texas Instruments (TXN) -0.30%; STMicroelectronics (STM) -0.46%. Lagging — Allegro MicroSystems (ALGM) -11.08%; onsemi (ON) -8.62%; Monolithic Power Systems (MPWR) -6.33%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-09-18: Renesas Electronics (6723.T) +99.04%; STMicroelectronics (STM) +86.30%; Infineon (IFX.DE) +70.63%. Weakest: Allegro MicroSystems (ALGM) +10.89%; Monolithic Power Systems (MPWR) +39.51%; onsemi (ON) +40.52%.

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.