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) 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
0992.HKLenovo GroupAsia-other32.40+6.09%+8.14%+24.90%+30.23%+245.78%+191.63%HKD
DELLDell TechnologiesUS524.14+1.50%+14.88%+19.76%+32.90%+258.93%+318.37%USD
2382.TWQuanta ComputerTaiwan345.00+2.99%+3.76%+14.24%-8.37%+19.38%+28.73%TWD
HPEHewlett Packard EnterpriseUS52.00-4.48%-0.63%-0.82%+5.69%+147.68%+128.53%USD
2317.TWFoxconn (Hon Hai)Taiwan256.00+3.43%+1.19%-3.21%-5.01%+14.80%+23.37%TWD

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

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 2026-09-04: leading — Lenovo Group (0992.HK) +24.90%; Dell Technologies (DELL) +19.76%; Quanta Computer (2382.TW) +14.24%. Lagging — Foxconn (Hon Hai) (2317.TW) -3.21%; Hewlett Packard Enterprise (HPE) -0.82%; Quanta Computer (2382.TW) +14.24%. Returns are close-to-close in each name's trading currency.

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

As of 2026-09-04: Dell Technologies (DELL) +318.37%; Lenovo Group (0992.HK) +191.63%; Hewlett Packard Enterprise (HPE) +128.53%. Weakest: Foxconn (Hon Hai) (2317.TW) +23.37%; Quanta Computer (2382.TW) +28.73%; Hewlett Packard Enterprise (HPE) +128.53%.

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.