—
C+
C+ The full Closelook — membership. Open the C+ overview
Rubin Build-Out 100 · Sector S6 · Layer 3 · Assembly & Test

Wafer Processing & Precision

Wafer prep, slicing, and ultra-precision tooling. The substrate stage between bare silicon and patterned die.

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) 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
6146.TDISCO CorpJapan54460.00+0.78%-8.24%-14.56%-24.97%-25.43%+40.94%JPY
6361.TEbaraJapan4436.00+1.05%-5.38%-26.30%-19.86%-17.75%+40.38%JPY
← Back to Rubin Build-Out 100 Read the AI Chip Build-Out dossier →

FAQ · from the current data · as of 2026-09-04

Wafer Processing & Precision — data Q&A

What is the Wafer Processing & Precision sub-index of the Rubin Build-Out 100?

2 constituents, listed across 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 Wafer Processing & Precision constituents lead and lag over one month?

As of 2026-09-04: leading — DISCO Corp (6146.T) -14.56%; Ebara (6361.T) -26.30%. Lagging — Ebara (6361.T) -26.30%; DISCO Corp (6146.T) -14.56%. Returns are close-to-close in each name's trading currency.

Which Wafer Processing & Precision names have done best over one year?

As of 2026-09-04: DISCO Corp (6146.T) +40.94%; Ebara (6361.T) +40.38%. Weakest: Ebara (6361.T) +40.38%; DISCO Corp (6146.T) +40.94%.

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.