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What happened with POWI today?

Why it moved
Explains possible causes using the day’s news and filings
Moving with the market?
Uses market moves and trading volume to assess what drove the change
What to watch next
The next thing that could change the call, and what to look for

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Uses news and trading volume to explain the day’s move and how it relates to the market.

Investment outlook

POWI in three months: buy, wait or sell?

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  • 3-month target price
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Company

Company overview

Power Integrations supplies chips that help power supplies convert electricity into the voltage and current an electronic device needs. Much of its product range serves supplies that convert alternating current to direct current. Its InnoSwitch chips combine input-side, output-side and feedback circuitry in one package. Industrial and consumer applications together generate most revenue, with appliances and cellphone chargers among important uses.

Electronics manufacturers and independent power-supply makers incorporate these chips into their products. Most sales reach them through electronic-component distributors; the rest are direct. Avnet is the largest customer and accounts for a substantial share of revenue, while Salcomp Group is another major customer. Customers generally choose the chips while designing a product, so sales depend on winning that choice and on the finished product selling successfully. Orders are short-term and can be canceled or rescheduled without significant penalty.

Power Integrations relies on Lapis Semiconductor, Seiko Epson and X-FAB to manufacture most of its silicon wafers using its proprietary processes, and on outside contractors for assembly and testing. Its ability to ship therefore depends on these suppliers delivering usable components on time. U.S. trade controls also restrict certain products, destinations and uses; some sales require licenses or notices.

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Source: SEC filing

Red flags

Know what’s buried in POWI’s filings before you buy

The risk section is the longest, dullest part of the filing. This keeps only what can really hurt you: where it hits, how hard, when it plays out.

Sorted into
  • Happening now
  • Could go wrong
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Moat

POWI says it has a moat. Does it hold up?

Every company claims an edge. Each one is checked against hard numbers like margins and returns: which hold, and which line gives way first.

Each edge rated
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  • Moderate
  • Limited
  • Unproven

Related companies

  • Competition
  • Shared drivers
  • Supplier
  • Customer

Power Integrations’ results also hinge on rivalry with Infineon in power-supply ICs, GaN, gate drivers and motor drivers, and on wafer supply from Lapis Semiconductor, Seiko Epson and X-FAB.

  • Navitas competes with Power Integrations in integrated high-voltage chips that convert power using gallium nitride (GaN). Its late-2025 shift toward higher-power infrastructure makes its AI data-center and energy-infrastructure products worth watching as Power Integrations develops GaN products for higher-power uses.

  • STMicroelectronics competes with Power Integrations for electronics and equipment manufacturers buying high-voltage power-supply chips and chips that control motors. Its news on these products is more relevant to Power Integrations than results across its much broader semiconductor range.

  • Monolithic Power Systems competes with Power Integrations to sell electronics manufacturers integrated products that turn AC into DC power. Its business is more computing-oriented: storage and computing was its largest revenue market in 2025, closely followed by enterprise data, so those results are not a direct readout of Power Integrations’ broader power-supply demand.

  • Texas Instruments offers electronics designers and manufacturers alternatives to Power Integrations’ integrated power-conversion products: controllers that regulate power through switching pulses, known as PWM controllers, and high-voltage GaN devices. Watch its product news in those two areas rather than treating its broad semiconductor results as a measure of this rivalry.

  • Diodes competes for power-supply manufacturers’ orders with chips that regulate power through switching pulses, known as PWM controllers, rather than Power Integrations’ integrated solutions. Its PWM-controller news is the relevant signal; Diodes reports its wider standard-semiconductor business as one segment.

  • Alpha and Omega gives power-supply manufacturers an alternative to Power Integrations’ integrated chips by selling power ICs and separate high-voltage switching transistors, or MOSFETs. Watch its MOSFET and packaging developments against Power Integrations’ pitch of fewer components and simpler designs.

  • ON Semiconductor competes with Power Integrations to sell equipment manufacturers chips that control motors. ON is much more automotive-oriented—automotive represented an estimated 51% of its 2025 revenue—so its overall results are less useful than motor-driver news for judging this overlap.

  • Allegro MicroSystems overlaps with Power Integrations in chips sold for industrial and automotive designs that control motors, drive LEDs and switch power devices through electrically isolated gate drivers. Its power-chip news for those customers is more relevant to this overlap than its magnetic-sensor business.

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  • Vishay and Power Integrations share exposure to power-supply production: manufacturers buy Vishay’s separate switching transistors, rectifiers and passive components for power conversion, alongside the market for Power Integrations’ integrated power-supply chips. Vishay’s power-conversion component business offers a view of demand from that customer group.

Agenda

in 7 daysTue, Oct 27

  1. 8:30 AMET pre-market

    Durable Goods Orders MoM (Sep)

    Durable goods orders track purchases of long-lasting products and equipment; stronger orders in the computer, communications and industrial markets that use Power Integrations’ power-conversion ICs can lift customer demand and sales, while weaker orders can reduce them.

in 9 daysThu, Oct 29

  1. Time to be announced

    STMicroelectronics N.V. earningsSTM

    STMicroelectronics' report will show demand for high-voltage power-conversion and motor-control chips, offering a read on the competitive pressure Power Integrations faces in overlapping products.

in 15 daysWed, Nov 4

  1. Time to be announced
    Major

    Power Integrations Inc earningsThis company

    This report shows whether Power Integrations can grow sales of its high-voltage power-conversion products while preserving the profit those sales generate.

  2. Time to be announced

    Vishay Intertechnology, Inc. earningsVSH

    Vishay's report can show whether power-supply manufacturers are buying more of the components they use in power conversion, offering a demand signal from the same customer group that buys Power Integrations' integrated chips.

in 28 daysTue, Nov 17

  1. 9:15 AMET pre-market

    Industrial Production MoM (Oct)

    Industrial production and capacity use track how much factories, mines and utilities produce and how fully their equipment runs; stronger activity can raise demand for Power Integrations’ power-conversion ICs from industrial customers and support sales, while weaker activity can reduce orders.