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Monolithic Power Systems Inc (MPWR) — chart, structure and Closelook read

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Company snapshot — Monolithic Power Systems Inc

MPWR 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
Monolithic Power Systems designs power-management chips: DC-to-DC converters, AC-to-DC circuits, driver MOSFETs and power-management ICs that regulate voltage inside servers, AI systems, memory, storage, networking and automotive equipment. It sells through distributors and resellers into storage and computing, enterprise data, automotive, communications, consumer and industrial markets. The company is based in West Palm Beach, Florida.
Where it sits in the stack
In our index, the Rubin Build-Out 100, Monolithic Power sits in Layer 4, Infrastructure, within the Power Semiconductors sleeve alongside substrates, grid equipment and thermal names. Every additional unit of AI compute needs matching voltage conversion, so it supplies a constraint the build-out cannot skip: the chips that step power down to what a processor or memory stack can use.
Who it is priced against
Closelook's peer group places it with the other power-semiconductor names in the Rubin sleeve — Texas Instruments, ON Semiconductor, STMicroelectronics, Allegro Microsystems and Renesas — on the reasoning that AI-driven power demand runs through all of them; the market also names Infineon Technologies as a comparable.
Why Closelook tracks it
It is a Rubin Build-Out 100 constituent and a Nasdaq-100 name, and it carries a Closelook score whose strongest module is quality and whose weakest is valuation. The diary has quoted it in the Daily Pulse, the Midday 10 and the Morning 10 when analog and storage names moved together against the broader market.
What the diary watches
Whether the analog and storage complex keeps trading as one block on down days, and whether power-semiconductor demand tracks the pace of new AI capacity as the diary expects.

Monolithic Power Systems Inc (MPWR) trades on US exchanges, classified under Technology, and sits in Layer 4 of the build-out stack. Constituent of Rubin Build-Out 100.

The Closelook company score reads 52/100 composite (momentum 33, quality 71, valuation 20) across 7 modules — the full breakdown, chart structure and analog history load live above.

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 MPWR, from the same nightly bakes the boards use. Research diary readings, not advice.

The Street on this name 1 analyst action on the wire · latest: price target by Arete, 2026-08-20

The Street on this name

Analyst actions and the latest print for MPWR from the Closelook wires — third-party opinions on the record, not our readings.

  • Price target Arete — target 2,013 Target set to $2013 (+54.8% to spot) 2026-08-20

1 action on the analyst wire since 2026-08-13: 1 target change. Analyst wire → · Earnings wire →

Who it is priced against Rubin Build-Out 100 · Power Semiconductors · 5 names with week and year-to-date

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 MPWR 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
MPWR+1.9%−1.4%−12.3%−19.2%
Power Semiconductors+0.2%−3.1%−7.3%—
Rubin Build-Out 100+1.5%−2.2%−2.9%—

Against the index: 0.8 pts ahead on the week, 9.4 pts behind on the month; against its Power Semiconductors sleeve 5.0 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 4 macro readings: Money Temperature, Factor regime, Sector × region …

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
  • Sector × region Technology in US: −2.1% week · −3.4% month · −1.2% quarter · +32.1% yearThe Sector Engine cell this name lives in, from XLK.US; the 11 × 4 matrix shows where its sector is being bought and where it is being sold. Sector Engine → 2026-09-16
  • 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 Monolithic Power Systems Inc (MPWR)?

Monolithic Power Systems Inc trades as MPWR on the US exchange (US) and is classified under Technology in the Closelook research universe, as of the registry build of 2026-09-18.

Is MPWR in a Closelook index?

Yes — Monolithic Power Systems Inc is a constituent of Rubin Build-Out 100, as of 2026-09-18.

What is Monolithic Power Systems Inc's Closelook composite score?

52 out of 100, with momentum 33, quality 71 and valuation 20 sub-scores, as of 2026-09-18. Scores are Closelook's own research readings, not ratings or investment advice.

Where does MPWR trade against its moving averages?

Stochastic turned up: Its stochastic crossed up out of oversold (%K 10.2 over %D 9.2) today — a short-term momentum-turn signal. As of 2026-09-17 — a technical state from the nightly Closelook bake, not advice. The Technical tab carries the full row.

How is MPWR doing against its Closelook index?

Over the past month Monolithic Power Systems Inc is −12.3% against −2.9% for the Rubin Build-Out 100 — 9.4 points behind its index, as of 2026-09-17. Its Power Semiconductors sleeve is −7.3% 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 Monolithic Power Systems Inc do?

Monolithic Power Systems designs power-management chips: DC-to-DC converters, AC-to-DC circuits, driver MOSFETs and power-management ICs that regulate voltage inside servers, AI systems, memory, storage, networking and automotive equipment. It sells through distributors and resellers into storage and computing, enterprise data, automotive, communications, consumer and industrial markets. The company is based in West Palm Beach, Florida. Closelook's peer group places it with the other power-semiconductor names in the Rubin sleeve — Texas Instruments, ON Semiconductor, STMicroelectronics, Allegro Microsystems and Renesas — on the reasoning that AI-driven power demand runs through all of them; the market also names Infineon Technologies as a comparable.

Where does Monolithic Power Systems Inc sit in the AI build-out?

In our index, the Rubin Build-Out 100, Monolithic Power sits in Layer 4, Infrastructure, within the Power Semiconductors sleeve alongside substrates, grid equipment and thermal names. Every additional unit of AI compute needs matching voltage conversion, so it supplies a constraint the build-out cannot skip: the chips that step power down to what a processor or memory stack can use. It is a Rubin Build-Out 100 constituent and a Nasdaq-100 name, and it carries a Closelook score whose strongest module is quality and whose weakest is valuation. The diary has quoted it in the Daily Pulse, the Midday 10 and the Morning 10 when analog and storage names moved together against the broader market.

What has Wall Street done on Monolithic Power Systems Inc recently?

The most recent analyst action on Monolithic Power Systems Inc on the Closelook wire is a price target by Arete on 2026-08-20 (target 2,013). 1 action on the analyst wire since 2026-08-13: 1 target change. Analyst actions are third-party opinions recorded by the wire, not Closelook readings. The “The Street on this name” block on this page lists the moves; the full feeds are the analyst wire and the earnings wire.

Where has Closelook written about Monolithic Power Systems Inc?

Monolithic Power Systems Inc appears in 5 Closelook pieces, most recently Daily Pulse: Enterprise AI — Intelligence Is Abundant. Authority Is Not. (2026-08-04); Midday 10: Palantir +27%, and the market buys back the exact corner it sold (2026-08-04); Morning 10: The referee bought it — Palantir +15% on a 93% quarter, while Korea's board splits in half (2026-08-04). What Closelook said most recently: On Monday, while the Dow closed at a record and the large platforms rose four to six percent each, the component layer went the other way: analog and storage were marked down, with MPWR off about five percent and WDC down 4.6%. (Daily Pulse, 2026-08-04). 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 MPWR, performance metrics, index-membership context and the Closelook structure read — an investment research diary view, not investment advice.

Mentioned on Closelook 5 pieces · newest: Daily Pulse, “Enterprise AI — Intelligence Is Abundant. Authority Is Not.” (2026-08-04)

Mentioned on Closelook

Where MPWR appears in the diary — 5 pieces, newest first. Every link is our own writing.

Dailies

Related in the Closelook universe