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.DEInfineonEurope54.40-1.09%-2.51%-1.05%-36.70%+44.51%+62.74%EUR
TXNTexas InstrumentsUS258.14-0.97%-0.26%-5.18%-14.49%+35.31%+47.58%USD
STMSTMicroelectronicsEurope48.61+1.14%-4.20%-7.00%-33.74%+46.70%+80.14%USD
6723.TRenesas ElectronicsJapan3168.00-2.22%-4.58%-8.49%-30.37%+28.03%+87.18%JPY
MPWRMonolithic Power SystemsUS1169.58+1.91%-1.39%-12.27%-19.24%+8.99%+37.22%USD
ONonsemiUS68.30+2.55%-2.66%-14.00%-39.51%+12.97%+37.81%USD
ALGMAllegro MicroSystemsUS33.11+0.27%-6.12%-15.94%-38.66%+5.04%+9.89%USD

FAQ · from the current data · as of 2026-09-17

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 2026-09-17: leading — Infineon (IFX.DE) -1.05%; Texas Instruments (TXN) -5.18%; STMicroelectronics (STM) -7.00%. Lagging — Allegro MicroSystems (ALGM) -15.94%; onsemi (ON) -14.00%; Monolithic Power Systems (MPWR) -12.27%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-09-17: Renesas Electronics (6723.T) +87.18%; STMicroelectronics (STM) +80.14%; Infineon (IFX.DE) +62.74%. Weakest: Allegro MicroSystems (ALGM) +9.89%; Monolithic Power Systems (MPWR) +37.22%; onsemi (ON) +37.81%.

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.