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Axcelis Technologies Inc (ACLS) — chart, structure and Closelooknet read

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Signals for this name

Every Closelooknet reading that exists for ACLS, from the same nightly bakes the boards use. Research diary readings, not advice.

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 Closelooknet index and its own sleeve — equal-weight, nightly closes.

Rubin Build-Out 100 · as of 2026-10-12

DayWeekMonth3 months
ACLS−5.3%−10.3%+12.5%−10.3%
Fab Subsystems & Process Infra−3.3%−5.2%−0.5%—
Rubin Build-Out 100−0.1%−6.9%+8.9%—

Against the index: 3.4 pts behind on the week, 3.6 pts ahead on the month; against its Fab Subsystems & Process Infra sleeve 13.0 pts ahead 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 57/100 · S&P 500 fund at 71, bullish alignedEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-10-09
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 94th percentile of the window, +5.0% over 20 sessions. Factor regime → 2026-10-12
  • Sovereign pressure Index 0.04 · down 0.71 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-10-09
How it trades on rate days beta 0.82 to TLT · on the worst bond days it fell more than the market

How it trades on rate days

How ACLS has moved when long-dated Treasury yields rise — measured against TLT, the 20+ year Treasury fund.

  • Beta to long bonds, 1 year 0.82 — shows only a loose link to bond moves for every 1% move in TLT (20+ year Treasuries), Axcelis Technologies Inc moved 0.82% on average · correlation 0.11 · higher than 77% of US names
  • Beta, last 3 months −0.06 less rate-sensitive lately than over the year
  • On the 10 worst bond days −1.41% on average against −0.74% for the S&P 500 the 10 sessions of the past year in which TLT fell most, i.e. long yields rose most
  • Latest of those days −1.93% TLT −1.29% that day 2026-09-24

Daily total returns from the adjusted price series; a TLT down day is a day long yields rose. Beta = the average move of the name for a 1% move in TLT. Past sensitivity, not a forecast. An investment diary, not a recommendation.

Who it is priced against Rubin Build-Out 100 · Fab Subsystems & Process Infra · 3 names with week and year-to-date

Peer group

Rubin Build-Out 100 · Fab Subsystems & Process Infra

Vacuum, gas-delivery, and ultra-high-purity fluids. The fab plumbing without which the headline tools are paperweights.

Compared against ACLS on the nightly bakes; the Peers tab ranks the cohort on the Closelooknet scores where it exists.

Company snapshot — Axcelis Technologies Inc

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

What it does
Axcelis designs and builds ion implantation systems that introduce dopants into semiconductor wafers, a core step in chip fabrication, across high-energy, high-current and medium-current implanter lines. It also sells lifecycle support — used tools, spare parts, upgrades, maintenance and training — to extend equipment life for its customers. Its buyers are chip manufacturers, reached through a direct sales force across the United States, Europe and Asia. It is based in Beverly, Massachusetts.
Where it sits in the stack
In Rubin, our index of the AI build-out supply chain, Axcelis sits in Layer 6, Manufacturing Support, within the Fab Subsystems & Process Infra sleeve, which the diary groups with vacuum, gas-delivery and ultra-high-purity fluid systems that keep other tools running. Within that sleeve Axcelis is itself a constraint on how fast a fab can add front-end capacity, since wafers need implantation before they can move to later process steps.
Who it is priced against
Closelooknet's peer group places it with MKS Instruments, Advanced Energy Industries, Ebara and Horiba, grouped as the fab plumbing that the headline process tools depend on; the market also compares it with Applied Materials as a broader front-end equipment maker.
Why Closelooknet tracks it
It holds a seat in Rubin, our index of the AI build-out supply chain. It carries a Closelooknet score, with momentum the strongest module and valuation the weakest; the diary follows it as one of the front-end tool names rather than a chip maker.
What the diary watches
Whether orders for implantation tools recover as fabs resume front-end capacity expansion, since Axcelis's volume tends to move with that cycle rather than with chip demand directly.

Axcelis Technologies Inc (ACLS) trades on US exchanges, and sits in Layer 6 of the build-out stack. Constituent of Rubin Build-Out 100.

Written from the company’s public profile and Closelooknet’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.

FAQ · from the current data · as of 2026-10-13

Quick answers

What is Axcelis Technologies Inc (ACLS)?

Axcelis Technologies Inc trades as ACLS on the US exchange (US) in the Closelooknet research universe, as of the registry build of 2026-10-13.

Is ACLS in a Closelooknet index?

Yes — Axcelis Technologies Inc is a constituent of Rubin Build-Out 100, as of 2026-10-13.

Where does ACLS trade against its moving averages?

Trending: Above its 20-, 50- and 200-day — still in an uptrend. As of 2026-10-09 — a technical state from the nightly Closelooknet bake, not advice. The Technical tab carries the full row.

How is ACLS doing against its Closelooknet index?

Over the past month Axcelis Technologies Inc is +12.5% against +8.9% for the Rubin Build-Out 100 — 3.6 points ahead of its index, as of 2026-10-12. Its Fab Subsystems & Process Infra sleeve is −0.5% 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.

How does Axcelis Technologies Inc compare with its peers?

Against its peer group (Rubin Build-Out 100 · Fab Subsystems & Process Infra), Axcelis Technologies Inc (ACLS) sits 30.5% below its 52-week high, 7.4% above its 50-day average; MKS Instruments Inc (MKSI) is 40.9% below, Advanced Energy Industries Inc (AEIS) is 27.4% below, Horiba (6856.T) is 12.5% below. Put any of them next to ACLS in the chart grid (2×1 or 2×2) and the page lays the companies side by side: performance, trend, valuation, margins and our money-flow reading.

How does Axcelis Technologies Inc trade when bond yields rise?

Over the past year Axcelis Technologies Inc had a beta of 0.82 to TLT, the long-dated Treasury fund — it shows only a loose link to bond moves, higher than 77% of US names. On the 10 sessions in which long bonds fell most it moved −1.41% on average, against −0.74% for the S&P 500. The "How it trades on rate days" block on this page carries the lines.

What does Axcelis Technologies Inc do?

Axcelis designs and builds ion implantation systems that introduce dopants into semiconductor wafers, a core step in chip fabrication, across high-energy, high-current and medium-current implanter lines. It also sells lifecycle support — used tools, spare parts, upgrades, maintenance and training — to extend equipment life for its customers. Its buyers are chip manufacturers, reached through a direct sales force across the United States, Europe and Asia. Closelooknet's peer group places it with MKS Instruments, Advanced Energy Industries, Ebara and Horiba, grouped as the fab plumbing that the headline process tools depend on; the market also compares it with Applied Materials as a broader front-end equipment maker.

Where does Axcelis Technologies Inc sit in the AI build-out?

In Rubin, our index of the AI build-out supply chain, Axcelis sits in Layer 6, Manufacturing Support, within the Fab Subsystems & Process Infra sleeve, which the diary groups with vacuum, gas-delivery and ultra-high-purity fluid systems that keep other tools running. Within that sleeve Axcelis is itself a constraint on how fast a fab can add front-end capacity, since wafers need implantation before they can move to later process steps. It holds a seat in Rubin, our index of the AI build-out supply chain. It carries a Closelooknet score, with momentum the strongest module and valuation the weakest; the diary follows it as one of the front-end tool names rather than a chip maker.

What does this page show?

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

Related in the Closelooknet universe

same Closelooknet index seat first, then Semiconductor Equipment & Materials. Scored names rank on their Closelooknet score; names without one rank on trend state — above or below their 50- and 200-day averages — never on a score they do not carry.