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Resonac (4004.T) — chart, structure and Closelook read

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Company snapshot — Resonac

4004.T in five paragraphs: what it makes and sells, where it sits in the Closelook stack, who it is priced against, why we track it, what we watch. Research diary, not advice.

What it does
Resonac is a Japanese chemicals company formed from the merger of Showa Denko and Hitachi Chemical, making specialty chemicals and high-purity materials for electronics. Among its products are photoresists and other chemicals used in semiconductor manufacturing. It is based in Tokyo.
Where it sits in the stack
In Rubin, our index of the AI build-out supply chain, Resonac sits in Layer 5, Connectivity & Materials, within the Advanced Materials sleeve — specialty chemicals, photoresists and high-purity materials that foundries consume before a wafer can be processed. It acts as a supply constraint on the fabrication step: without these inputs chip production halts, even though the sleeve rarely draws attention.
Who it is priced against
Its Closelook peer group is the Advanced Materials sleeve of our Rubin index — Soitec, Entegris, Murata, Shin-Etsu Chemical, Siltronic and Sumco — chemical and materials suppliers to chipmakers, grouped for their shared position feeding the fabrication step. The market also names JSR as a comparable photoresist maker.
Why Closelook tracks it
It is a constituent of the Rubin Build-Out 100. Only one module of its Closelook score has been built so far, so the overall read is still in progress. It has appeared once in the Morning 10, in a note on Asian markets trading a broader AI demand pullback.
What the diary watches
The diary watches whether demand for advanced materials keeps pace with new fab and packaging capacity, given how far its price has recently pulled back from its 52-week high.

Resonac (4004.T) trades on the TSE exchange in Japan, and sits in Layer 5 of the build-out stack. Constituent of Rubin Build-Out 100.

Written from the company’s public profile and Closelook’s own readings, 2026-09-17. Descriptive, refreshed with the registry; corrections welcome via the imprint. closelook.net is an investment research diary — market structure, index membership and scores are our own readings, not investment advice. Related: index compare · sector dispersion · scanner.

Signals for this name

Every Closelook reading that exists for 4004.T, from the same nightly bakes the boards use. Research diary readings, not advice.

Who it is priced against Rubin Build-Out 100 · Advanced Materials · 6 names with week and year-to-date

Peer group

Rubin Build-Out 100 · Advanced Materials

Specialty chemicals, photoresists, and high-purity materials. Quietly indispensable; never the headline.

Compared against 4004.T on the nightly bakes; the Peers tab ranks the cohort on the Closelook scores where it exists.

Versus its index Rubin Build-Out 100 — the name, its sleeve and the index over day, week and month

Versus its index

The name against its Closelook index and its own sleeve — equal-weight, nightly closes.

Rubin Build-Out 100 · as of 2026-09-17

DayWeekMonth3 months
4004.T−4.0%−15.3%−14.7%−26.4%
Advanced Materials−1.1%−4.1%−4.7%—
Rubin Build-Out 100+1.5%−2.2%−2.9%—

Against the index: 13.1 pts behind on the week, 11.8 pts behind on the month; against its Advanced Materials sleeve 10.0 pts behind on the month.

Returns from the index workers’ nightly closes; equal-weight sleeves. A relative reading from the research diary, not advice.

Weather around the name 3 macro readings: Money Temperature, Factor regime, Sovereign pressure

The weather around this name

Macro readings that apply by membership — the regime, the factor tape, the sector cell, the funding backdrop.

  • Money Temperature Composite 55/100 · S&P 500 fund at 58, above its 50- and 200-day averagesEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-09-17
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 94th percentile of the window, +2.7% over 20 sessions. Factor regime → 2026-09-17
  • Sovereign pressure Index 0.00 · down 0.41 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-09-17

FAQ · from the current data · as of 2026-09-18

Quick answers

What is Resonac (4004.T)?

Resonac trades as 4004.T on the TSE exchange (Japan) in the Closelook research universe, as of the registry build of 2026-09-18.

Is 4004.T in a Closelook index?

Yes — Resonac is a constituent of Rubin Build-Out 100, as of 2026-09-18.

Where does 4004.T trade against its moving averages?

Stochastic turned up: Its stochastic crossed up out of oversold (%K 25.3 over %D 23.5) 3 sessions ago — a short-term momentum-turn signal. As of 2026-09-18 — a technical state from the nightly Closelook bake, not advice. The Technical tab carries the full row.

How is 4004.T doing against its Closelook index?

Over the past month Resonac is −14.7% against −2.9% for the Rubin Build-Out 100 — 11.8 points behind its index, as of 2026-09-17. Its Advanced Materials sleeve is −4.7% over the same month. The “Versus its index” table on this page carries the day, the week and the month for the name, its sleeve and the index.

What does Resonac do?

Resonac is a Japanese chemicals company formed from the merger of Showa Denko and Hitachi Chemical, making specialty chemicals and high-purity materials for electronics. Among its products are photoresists and other chemicals used in semiconductor manufacturing. It is based in Tokyo. Its Closelook peer group is the Advanced Materials sleeve of our Rubin index — Soitec, Entegris, Murata, Shin-Etsu Chemical, Siltronic and Sumco — chemical and materials suppliers to chipmakers, grouped for their shared position feeding the fabrication step. The market also names JSR as a comparable photoresist maker.

Where does Resonac sit in the AI build-out?

In Rubin, our index of the AI build-out supply chain, Resonac sits in Layer 5, Connectivity & Materials, within the Advanced Materials sleeve — specialty chemicals, photoresists and high-purity materials that foundries consume before a wafer can be processed. It acts as a supply constraint on the fabrication step: without these inputs chip production halts, even though the sleeve rarely draws attention. It is a constituent of the Rubin Build-Out 100. Only one module of its Closelook score has been built so far, so the overall read is still in progress. It has appeared once in the Morning 10, in a note on Asian markets trading a broader AI demand pullback.

Where has Closelook written about Resonac?

Resonac appears in 2 Closelook pieces, most recently Morning 10: Yen — the Bank of Japan hikes and the dollar holds 157: the carry trade pays, the lines held, chips +3.4% over $505 (2026-09-18); Morning 10: AI trade — the labs ask for a slowdown: Kospi −3.3%, SoftBank −11%, Nasdaq futures −1.2%, oil back above $106 (2026-09-14). What Closelook said most recently: Rubin closed +1.5% at 1,904.95 on its Foundry and Architects layers while its Japanese constituents fell 0.9% — Sumco −3.7%, Resonac −4.0% — which makes Tokyo Electron’s +4.2% this morning the first equipment name on either continent to… (Morning 10, 2026-09-18). The "Mentioned on Closelook" block on this page lists the long reads, the reference entries and the dailies that name it.

What does this page show?

A live price chart with SMA overlays and drawing tools for 4004.T, performance metrics, index-membership context and the Closelook structure read — an investment research diary view, not investment advice.

Mentioned on Closelook 2 pieces · newest: Morning 10, “Yen — the Bank of Japan hikes and the dollar holds 157: the carry trade pays, the lines held, chips +3.4% over $505” (2026-09-18)

Mentioned on Closelook

Where 4004.T appears in the diary — 2 pieces, newest first. Every link is our own writing.

Dailies

Related in the Closelook universe