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ON Semiconductor Corporation (ON) — chart, structure and Closelook read

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Signals for this name

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

Peer group

Rubin Build-Out 100 · Power Semiconductors

Power-management IC, GaN, SiC. Every megawatt the AI build-out adds requires the right power semis underneath.

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

Versus its index

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

Rubin Build-Out 100 · as of 2026-09-16

DayWeekMonth3 months
ON−9.0%−6.2%−20.1%−43.7%
Power Semiconductors−1.0%−4.5%−10.7%—
Rubin Build-Out 100+1.9%−5.3%−7.4%—

Against the index: 0.9 pts behind on the week, 12.7 pts behind on the month; against its Power Semiconductors sleeve 9.4 pts behind on the month.

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

The weather around this name

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

About ON Semiconductor Corporation

ON Semiconductor Corporation (ON) trades on US exchanges, classified under Technology. It is a constituent of Rubin Build-Out 100, sitting in Layer 4 of the build-out stack.

The Closelook company score reads 49/100 composite (momentum 25, quality 43, valuation 52) across 7 modules — the full three-layer breakdown, chart structure and analog history load live above.

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 2026-09-17

Quick answers

What is ON Semiconductor Corporation (ON)?

ON Semiconductor Corporation trades as ON on the US exchange (US) and is classified under Technology in the Closelook research universe, as of the registry build of 2026-09-17.

Is ON in a Closelook index?

Yes — ON Semiconductor Corporation is a constituent of Rubin Build-Out 100, as of 2026-09-17.

What is ON Semiconductor Corporation's Closelook composite score?

49 out of 100, with momentum 25, quality 43 and valuation 52 sub-scores, as of 2026-09-17. Scores are Closelook's own research readings, not ratings or investment advice.

What is the current Closelook signal-board read on ON?

Down 9% at the close — Already below its 50-day; one of the day's sharpest drops. As of 2026-09-16; the signal board re-bakes nightly. A structure reading from Closelook's research diary, not advice.

Where does ON trade against its moving averages?

Down 9% at the close: Already below its 50-day; one of the day's sharpest drops. As of 2026-09-16 — a technical state from the nightly Closelook bake, not advice. The Technical tab carries the full row.

How is ON doing against its Closelook index?

Over the past month ON Semiconductor Corporation is −20.1% against −7.4% for the Rubin Build-Out 100 — 12.7 points behind its index, as of 2026-09-16. Its Power Semiconductors sleeve is −10.7% 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.

Where has Closelook written about ON Semiconductor Corporation?

ON Semiconductor Corporation appears in 2 Closelook pieces, most recently Morning 10: Rates — the Fed hikes and the 10-year closes above 5%: the belly sold, the relief unwound, chips back under $505 (2026-09-17); 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). 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 ON, performance metrics, index-membership context and the Closelook structure read — an investment research diary view, not investment advice.

Mentioned on Closelook

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

Dailies

Related in the Closelook universe