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Rubin Build-Out 100 · Sector S19 · Layer 7 · AI Factory

AI Factory Systems

Server and rack OEMs that integrate GPUs into shipping AI systems. The output end of the build-out — thin-margin, high-volume, deliberately under-weighted.

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
DELLDell TechnologiesUS534.28-5.82%+1.93%+8.04%+35.07%+253.47%+330.88%USD
2382.TWQuanta ComputerTaiwan332.50-1.19%-4.32%+1.53%-8.28%+15.05%+31.16%TWD
2317.TWFoxconn (Hon Hai)Taiwan248.50+0.20%-2.93%-4.24%-7.62%+14.78%+25.19%TWD
0992.HKLenovo GroupAsia-other32.14+2.68%-0.68%-4.35%+31.61%+233.06%+197.04%HKD
HPEHewlett Packard EnterpriseUS55.41-10.76%+6.56%-7.37%+15.37%+158.42%+126.87%USD
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FAQ · from the current data · as of 2026-09-14

AI Factory Systems — data Q&A

What is the AI Factory Systems sub-index of the Rubin Build-Out 100?

5 constituents, listed across US, Asia-other, 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 AI Factory Systems constituents lead and lag over one month?

As of 2026-09-14: leading — Dell Technologies (DELL) +8.04%; Quanta Computer (2382.TW) +1.53%; Foxconn (Hon Hai) (2317.TW) -4.24%. Lagging — Hewlett Packard Enterprise (HPE) -7.37%; Lenovo Group (0992.HK) -4.35%; Foxconn (Hon Hai) (2317.TW) -4.24%. Returns are close-to-close in each name's trading currency.

Which AI Factory Systems names have done best over one year?

As of 2026-09-14: Dell Technologies (DELL) +330.88%; Lenovo Group (0992.HK) +197.04%; Hewlett Packard Enterprise (HPE) +126.87%. Weakest: Foxconn (Hon Hai) (2317.TW) +25.19%; Quanta Computer (2382.TW) +31.16%; Hewlett Packard Enterprise (HPE) +126.87%.

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.