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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 TechnologiesUS588.40+4.46%+16.14%+25.55%+40.32%+295.56%+365.94%USD
0992.HKLenovo GroupAsia-other34.32+1.54%+6.39%+13.94%+44.32%+259.75%+221.65%HKD
HPEHewlett Packard EnterpriseUS61.04+7.69%+10.54%+9.61%+26.64%+185.34%+154.32%USD
2382.TWQuanta ComputerTaiwan344.00+1.03%+2.38%+3.93%-9.47%+20.07%+33.08%TWD
2317.TWFoxconn (Hon Hai)Taiwan250.50+1.01%-0.20%+2.24%-6.70%+22.20%+22.20%TWD
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FAQ · from the current data · as of 2026-09-17

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 2026-09-17: leading — Dell Technologies (DELL) +25.55%; Lenovo Group (0992.HK) +13.94%; Hewlett Packard Enterprise (HPE) +9.61%. Lagging — Foxconn (Hon Hai) (2317.TW) +2.24%; Quanta Computer (2382.TW) +3.93%; Hewlett Packard Enterprise (HPE) +9.61%. Returns are close-to-close in each name's trading currency.

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

As of 2026-09-17: Dell Technologies (DELL) +365.94%; Lenovo Group (0992.HK) +221.65%; Hewlett Packard Enterprise (HPE) +154.32%. Weakest: Foxconn (Hon Hai) (2317.TW) +22.20%; Quanta Computer (2382.TW) +33.08%; Hewlett Packard Enterprise (HPE) +154.32%.

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.