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 InstrumentsUS263.42-1.97%+1.93%-3.66%-12.52%+38.08%+45.11%USD
STMSTMicroelectronicsEurope47.78-7.24%-8.54%-11.39%-38.19%+45.77%+84.44%USD
ONonsemiUS71.65-5.90%-3.67%-12.15%-38.65%+22.37%+46.16%USD
IFX.DEInfineonEurope54.04-7.72%-11.10%-12.46%-29.87%+36.34%+66.79%EUR
6723.TRenesas ElectronicsJapan3176.00-0.50%-6.67%-15.22%-29.23%+19.94%+83.80%JPY
MPWRMonolithic Power SystemsUS1143.24-7.39%-6.59%-16.10%-27.52%+8.83%+36.78%USD
ALGMAllegro MicroSystemsUS33.85-6.77%-7.54%-23.29%-32.84%+8.74%+12.95%USD

FAQ · from the current data · as of 2026-09-14

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 2026-09-14: leading — Texas Instruments (TXN) -3.66%; STMicroelectronics (STM) -11.39%; onsemi (ON) -12.15%. Lagging — Allegro MicroSystems (ALGM) -23.29%; Monolithic Power Systems (MPWR) -16.10%; Renesas Electronics (6723.T) -15.22%. Returns are close-to-close in each name's trading currency.

Which Power Semiconductors names have done best over one year?

As of 2026-09-14: STMicroelectronics (STM) +84.44%; Renesas Electronics (6723.T) +83.80%; Infineon (IFX.DE) +66.79%. Weakest: Allegro MicroSystems (ALGM) +12.95%; Monolithic Power Systems (MPWR) +36.78%; Texas Instruments (TXN) +45.11%.

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.