Rubin Build-Out 100 · Sector S10 · Layer 4 · Infrastructure

Substrates & Interposers

Organic substrates and silicon interposers — the connective tissue between die, package, and board.

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
3037.TWUnimicronTaiwan1110.00-5.93%+2.30%+55.03%+5.71%+130.53%+681.69%TWD
4062.TIbidenJapan20175.00-1.80%+5.13%+49.78%-12.28%+104.12%+485.72%JPY
ATS.VIAT&SEurope154.20+5.04%+9.67%+14.73%+2.66%+203.54%+657.74%EUR
GLWCorningUS148.98-2.50%-0.57%+10.18%-17.76%-0.93%+123.61%USD
INTCIntelUS89.47-2.85%-0.67%-1.82%-21.98%+96.16%+260.04%USD
5201.TAGC Inc.Japan5729.00-0.47%-1.26%-5.46%-17.43%-12.09%+25.06%JPY

FAQ · from the current data · as of 2026-08-28

Substrates & Interposers — data Q&A

What is the Substrates & Interposers sub-index of the Rubin Build-Out 100?

6 constituents, listed across Japan, US, Europe, Taiwan, 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 Substrates & Interposers constituents lead and lag over one month?

As of 2026-08-28: leading — Unimicron (3037.TW) +55.03%; Ibiden (4062.T) +49.78%; AT&S (ATS.VI) +14.73%. Lagging — AGC Inc. (5201.T) -5.46%; Intel (INTC) -1.82%; Corning (GLW) +10.18%. Returns are close-to-close in each name's trading currency.

Which Substrates & Interposers names have done best over one year?

As of 2026-08-28: Unimicron (3037.TW) +681.69%; AT&S (ATS.VI) +657.74%; Ibiden (4062.T) +485.72%. Weakest: AGC Inc. (5201.T) +25.06%; Corning (GLW) +123.61%; Intel (INTC) +260.04%.

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.