AI Board · closes through 25 Sept 2026
AI Indices — Rubin, Ecosystem and Winners, every session
AI indices — Most Rubin names are losing strength (111 of 126); most Ecosystem names are getting stronger (21 of 34); most Winners names are getting stronger (34 of 40). On the week Rubin +5.1%, Ecosystem +3.1%, Winners −0.1%.
1 · The indices
| Index | Level | Day | Week | Month | YTD | From the year's high |
|---|---|---|---|---|---|---|
| Rubin Build-Out 100capex: what gets built | 2055.72 | +1.7% | +5.1% | +4.1% | +100.0% | −17.1%high 22 Jun 2026 |
| Agentic Ecosystemopex: what it costs to run | 1684.38 | −2.7% | +3.1% | +4.0% | +70.7% | −2.8%high 23 Sept 2026 |
| Agentic Winners 40applications: what gets sold on top | 909.84 | −0.7% | −0.1% | −5.7% | −7.0% | −9.8%high 7 Jan 2026 |
| Jensen — NVIDIA Strategic Authoritythe NVIDIA-ecosystem book | $3.58m | — | — | — | +156%since 12 Jul 2023 | — |
Equal-weight headline of each index. Jensen is a book, not an index: its value is the book's market value, its return runs since inception, and day and week fill in from this board's own daily record.
2 · Sectors: best and worst per index
Rubin 24 sectors
Week
- EDA & Chip IP+12.7%
- Substrates & Interposers+12.6%
- Architects (Chip Design)+9.9%
- AI Factory Systems+0.2%
- DC Construction+0.9%
- Storage+1.3%
Year to date
- Storage+359.5%
- Substrates & Interposers+233.1%
- HBM Memory+200.1%
- Photomasks & Mask Infrastructure−1.0%
- Wafer Processing & Precision+10.6%
- Robotics & Automation+12.2%
Ecosystem 8 sectors
Week
- Runtime & API Gateways+8.8%
- Data & Memory+5.6%
- Identity, Trust & Governance+5.5%
- Foundation Models−18.8%
- Compute Operators−0.4%
- Agentic Security+1.1%
Year to date
- Foundation Models+378.3%
- Runtime & API Gateways+172.6%
- Edge & Distribution+75.8%
- Data & Memory+42.5%
- Compute Operators+59.4%
- Agentic Security+59.5%
Winners 4 sectors
Week
- Megacap Gateway+3.1%
- Endpoints+1.1%
- Application Leaders−1.2%
- Control Plane−1.1%
Year to date
- Megacap Gateway+16.3%
- Application Leaders−7.1%
- Endpoints−20.0%
- Control Plane−9.4%
3 · Top and bottom ten across all three
198 names in Rubin, Ecosystem and Winners together, each counted once.
Week
Top ten
| Global UnichipGUCRubin · Architects (Chip Design) | +31.1% |
|---|---|
| Unimicron3037.TWRubin · Substrates & Interposers | +26.1% |
| Ibiden4062.TRubin · Substrates & Interposers | +22.1% |
| Ferrotec Holdings6890.TRubin · Testing & Metrology | +21.5% |
| EverpurePEcosystem · Data & Memory | +21.0% |
| Astera LabsALABRubin · High-Speed Interconnects | +20.2% |
| Credo TechnologyCRDORubin · High-Speed Interconnects | +19.9% |
| ams-OSRAMAMS.SWRubin · Machine Vision, Sensing & Edge | +17.0% |
| DatadogDDOGEcosystem · Operations & Observability | +16.6% |
| AAONAAONRubin · Thermal Management | +16.1% |
Bottom ten
| Zhipu AI / Z.ai2513.HKEcosystem · Foundation Models | −18.8% |
|---|---|
| IntuitINTUWinners · Application Leaders | −9.0% |
| OracleORCLWinners · Control Plane | −7.1% |
| UiPathPATHWinners · Control Plane | −7.0% |
| CoherentCOHRRubin · High-Speed Interconnects | −6.8% |
| freee4478.TWinners · Application Leaders | −6.6% |
| Money Forward3994.TWinners · Application Leaders | −6.1% |
| IRENIRENEcosystem · Compute Operators | −5.5% |
| AdobeADBEWinners · Application Leaders | −5.4% |
| SiltronicWAF.DERubin · Advanced Materials | −4.8% |
Year to date
Top ten
| SanDiskSNDKRubin · Storage | +545.9% |
|---|---|
| AT&SATS.VIRubin · Substrates & Interposers | +520.4% |
| SoitecSOI.PARubin · Advanced Materials | +475.2% |
| Unimicron3037.TWRubin · Substrates & Interposers | +441.1% |
| Kioxia285A.TRubin · Storage | +391.4% |
| Zhipu AI / Z.ai2513.HKEcosystem · Foundation Models | +381.8% |
| Aehr Test SystemsAEHRRubin · Testing & Metrology | +371.1% |
| Dell TechnologiesDELLRubin · AI Factory Systems | +344.3% |
| Lenovo Group0992.HKRubin · AI Factory Systems | +289.1% |
| Furukawa Electric5801.TRubin · High-Speed Interconnects | +263.0% |
Bottom ten
| CoStarCSGPWinners · Application Leaders | −57.2% |
|---|---|
| IntuitINTUWinners · Application Leaders | −56.0% |
| AppLovinAPPWinners · Endpoints | −49.7% |
| Kingdee0268.HKWinners · Application Leaders | −47.8% |
| HubSpotHUBSWinners · Application Leaders | −44.1% |
| monday.comMNDYWinners · Application Leaders | −41.7% |
| RedditRDDTWinners · Endpoints | −38.0% |
| OracleORCLWinners · Control Plane | −29.5% |
| AdobeADBEWinners · Application Leaders | −29.3% |
| Sea LimitedSEWinners · Endpoints | −24.3% |
4 · Names per index
Rubin 126 names
Week
- Global Unichip+31.1%
- Unimicron+26.1%
- Ibiden+22.1%
- Ferrotec Holdings+21.5%
- Astera Labs+20.2%
- Coherent−6.8%
- Siltronic−4.8%
- Cognex−4.7%
- Applied Optoelectronics−3.6%
- Nokia−2.7%
Year to date
- Fabrinet−12.9%
- Synopsys−11.4%
- Yaskawa Electric−9.8%
- Photronics−9.0%
- Canon−2.5%
Ecosystem 34 names
Week
- Everpure+21.0%
- Datadog+16.6%
- Twilio+13.1%
- Akamai+9.0%
- Cloudflare+7.9%
- Zhipu AI / Z.ai−18.8%
- IREN−5.5%
- JFrog−3.9%
- SpaceX / Starlink−2.6%
- Kingsoft Cloud−2.6%
Year to date
- Zhipu AI / Z.ai+381.8%
- DigitalOcean+185.4%
- Nebius+163.8%
- Fastly+144.9%
- Okta+133.4%
- Zscaler−12.5%
- Kingsoft Cloud−11.6%
- Teradata−2.5%
- Trend Micro−0.9%
- MongoDB+2.7%
5 · The structure underneath: Directional Flow
Directional Flow is the Pattern Scanner's trend-persistence reading for each member. "Stronger" counts names whose flow is accelerating up or has turned up; "weaker" counts names whose flow is decelerating or accelerating down. The trend compares the five-day change of the average flow with its 21-day change. The board keeps its own daily record from today, so the changes against yesterday and five sessions ago fill in over the coming days.
Rubin 126 names
- getting stronger 6
- turning up 1
- losing force 106
- flat 8
- getting weaker 5
- Stronger / weaker
- 7 / 111
- Average flow
- 74.65 days −4.1 · 21 days −21.7
- Trend
- falling
Strongest and weakest flow
- Kioxia 241
- AT&S 237
- SanDisk 237
- Photronics -19
- Fabrinet -18
- Synopsys -17
Ecosystem 34 names
- getting stronger 19
- turning up 2
- losing force 8
- flat 4
- getting weaker 1
- Stronger / weaker
- 21 / 9
- Average flow
- 59.55 days +2.6 · 21 days +6.6
- Trend
- rising
Strongest and weakest flow
- DigitalOcean 137
- BlackBerry 136
- Nebius 132
- Kingsoft Cloud -38
- Zscaler -29
- IREN -15
Winners 40 names
- getting stronger 14
- turning up 20
- losing force 1
- flat 4
- getting weaker 1
- Stronger / weaker
- 34 / 2
- Average flow
- -9.25 days +4.2 · 21 days +21.0
- Trend
- rising
Strongest and weakest flow
- Money Forward 58
- Atlassian 51
- ServiceNow 45
- CoStar -106
- Intuit -88
- Kakao -80
More on the method: Directional Flow rankings · Rubin Rotation Radar · compare the indices. An investment research diary, not investment advice.
FAQ · from the current data · as of 2026-09-25
Quick answers
What is the AI Board?
A daily read of the three Closelooknet AI indices — Rubin Build-Out 100 (what gets built), the Agentic Ecosystem (what it costs to run) and Agentic Winners 40 (what gets sold on top) — plus the Jensen book: index level, sectors, names and the Directional Flow structure underneath. Closes through 25 Sept 2026.
When is it updated?
Tuesday to Saturday around 02:00 UTC, after the index workers and the Directional Flow scan have the prior US close. Saturday carries Friday.
What does "getting stronger" and "losing strength" mean here?
They count Directional Flow states. Getting stronger = the flow is accelerating up or has turned up; losing strength = the flow is still positive but decelerating, or accelerating down. Directional Flow is Closelooknet's trend-persistence reading from the Pattern Scanner, not a price return.
Which YTD base does the board use?
The index workers' base: the first close of the year (2 Jan 2026 this year). Member YTD is computed from lake closes on the same base, in local currency.
Is this investment advice?
No. The board is a data surface in an investment research diary; it records what the indices and their members did and recommends nothing.