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-other29.96-2.47%+0.60%+37.81%+24.83%+214.38%+172.86%HKD
2382.TWQuanta ComputerTaiwan332.50-0.30%+3.42%+19.18%-10.74%+14.07%+23.61%TWD
DELLDell TechnologiesUS456.24-3.39%+4.36%+12.70%+8.39%+209.06%+248.14%USD
HPEHewlett Packard EnterpriseUS52.33-3.82%-2.10%+11.01%+21.58%+145.31%+134.33%USD
2317.TWFoxconn (Hon Hai)Taiwan253.00+0.40%+3.05%+10.24%-13.80%+4.12%+20.48%TWD

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

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 2026-08-28: leading — Lenovo Group (0992.HK) +37.81%; Quanta Computer (2382.TW) +19.18%; Dell Technologies (DELL) +12.70%. Lagging — Foxconn (Hon Hai) (2317.TW) +10.24%; Hewlett Packard Enterprise (HPE) +11.01%; Dell Technologies (DELL) +12.70%. Returns are close-to-close in each name's trading currency.

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

As of 2026-08-28: Dell Technologies (DELL) +248.14%; Lenovo Group (0992.HK) +172.86%; Hewlett Packard Enterprise (HPE) +134.33%. Weakest: Foxconn (Hon Hai) (2317.TW) +20.48%; Quanta Computer (2382.TW) +23.61%; Hewlett Packard Enterprise (HPE) +134.33%.

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.