Conviction: Medium Status: Researching

2026-07-31 tape note: POWI $60.71 (+2.55% vs $59.20), RSI 37.1 (warmed from 32). 7D -4.33% (moderated from -20.42%), 30D -24.37% (moderated from -25.03%), 3M -16.99% (deepened from -14.84%). From the 52-week high, the gap is -33.42% (narrowed from -35.07%). Per the tape: trend "weak-down", regime "pullback", golden cross intact. No new fundamentals re-researched. Per the full-scan summaries (2026-07-31 close). 2026-08-08 tape note: POWI $64.59 (+6.39% vs $60.71), RSI 46.5 (warmed from 37.1). 7D +6.39% (turned positive from -4.33%), 30D -2.81% (moderated from -24.37%), 3M -11.64% (moderated from -16.99%). From the 52-week high, the gap is -32.06% (narrowed from -33.42%). Per the tape: trend "weak-down", regime "pullback", golden cross intact. Power Integrations' Q2 landed 2026-08-05 — EPS $0.37 vs $0.32 est. (+15.8% surprise, beat) — but the stock fell -8.7% across the print per the desk's earnings-event record; today's move is a bounce off that print-day low, not a fresh catalyst. No filed quarter is on the desk's financial sources yet. Per the full-scan summaries (2026-08-07 close).

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Editorial Note

Continued strong-up, pulling back to SMA20 — thesis intact. At the May 29 refresh (RSI 67.3, $84, +15.81% 30D, -5.62% from 52wk high) POWI was near ATH after the Q1 earnings pass. As of 2026-06-16, POWI is at $79.33, RSI 54.2 — a moderate pullback from the $84 peak. RSI has cooled from 67.3 to 54.2, moving back toward neutral. The +0.6% vs SMA20 ($78.88) says price has pulled back to the SMA20 and is essentially touching it — a healthy consolidation, not a breakdown. The 7D +6.57% is a recent surge; the 30D +17.61% and 3M +66.98% confirm the AI-power-delivery thesis has been the dominant driver over the quarter. The -10.87% from 52wk high is wider than the May -5.62%, suggesting the name pulled off the ATH zone and is now in a mid-range consolidation at SMA20. IP/topology rentier thesis unchanged; RSI 54 is a cleaner entry zone than RSI 67.

2026-07-11 tape note: POWI $72.07 (07-10), RSI 45, down -9.2% from the $79.33 (06-16) checkpoint. Pullback has deepened past SMA20 (now $78.29, -7.9% below vs +0.6% before) and -20.96% from 52wk high (vs -10.87%). 30D flipped to -7.32% (from +17.61%); 3M moderated to +35.34% (from +66.98%). Regime "pullback," thesis flag still "intact." Deeper than the "healthy consolidation at SMA20" framing from 06-16, but not broken — still well above SMA200 ($51.96, +38.7%) and no death cross. Watch for RSI stabilization; entry zone framing gets a re-test.

2026-07-17 tape note: POWI $70.45 (07-16), RSI 43.9, roughly flat vs the $72.07 (07-11) checkpoint (-2.2%). Still -7.2% below SMA20 and now -8.0% below SMA50 (widened from -7.9%/n.a.). 30D deteriorated further to -19.13% (from -7.32%); 3M cooled to +14.22% (from +35.34%). -22.74% from 52wk high (widened slightly from -20.96%). Regime "pullback," thesis flag still "intact" — still well above SMA200 (+33.6%), no death cross. No new fundamentals re-researched; the pullback continues without a stabilization signal yet.

2026-07-25 tape note (Friday 2026-07-24 close): The pullback has deepened sharply, including a large single-day drop. POWI $63.46, RSI 35.8 (down from 43.9) — down -9.92% 7D (including a -10.46% single-day move), now -12.4% below SMA20 (from -7.2%) and -16.8% below SMA50 (from -8.0%). 30D has deepened to -22.48% (from -19.13%), and 3M has flipped negative to -13.5% (from +14.22%) — the first negative 3M read in this file. -22.27% from 52wk high (roughly flat vs -22.74%). Still well above SMA200 (+18.6%, golden cross intact, no death cross) — long-term structure unbroken even as the near-term pullback deepens. No new fundamentals re-researched; RSI 35.8 is nearing oversold but the pullback has not yet stabilized.

2026-07-28 tape note: The pullback has deepened further into oversold territory. POWI $59.20 (-6.7% vs $63.46), RSI 32 (down from 35.8) — now -17.1% below SMA20 (from -12.4%) and -22.1% below SMA50 (from -16.8%). 7D has deepened sharply to -20.42% (from -9.92%), 30D has deepened to -25.03% (from -22.48%), and 3M has deepened further to -14.84% (from -13.5%). -35.07% from 52wk high — widened materially from -22.27%, a new deepest drawdown for this file. Price ($59.20) is now only ~0.9% above the $58.65 stop-loss level — the closest approach yet. Still above SMA200 (+10.4%, golden cross intact, no death cross) — long-term structure unbroken, though the cushion has narrowed sharply. No new fundamentals re-researched; RSI 32 is near oversold but the pullback has not stabilized — watch the stop closely. 2026-08-14 tape note: POWI $62.75 (-2.85% vs $64.59), RSI 45.2 (cooled from 46.5). 7D -2.85% (turned negative from +6.39%), 30D -11.64% (deepened from -2.81%), 3M -14.11% (deepened from -11.64%). From the 52-week high, the gap is -31.66% (essentially flat from -32.06%). Per the tape: trend "weak-down", regime "pullback", golden cross intact. No new fundamentals re-researched. Per the full-scan summaries (2026-08-14 close).

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The Story Right Now

POWI at $79.33, RSI 54.2, +0.6% vs SMA20 ($78.88), -10.87% from 52wk high. The stock has pulled back from the $84 ATH zone and is now consolidating at the SMA20 level — a textbook healthy pullback in a strong-up trend. RSI 54.2 is right in the neutral-to-bullish zone — cooler than the approaching-overbought 67.3 of the May 29 refresh, suggesting the Q1-earnings-run digestion is underway.

The 3M +66.98% is the key data point: the entire AI-power-delivery supercycle thesis has played out in the trailing quarter. The 30D +17.61% shows the name is still gaining on a 30-day basis even after the ATH pullback.

The big-picture thesis is unchanged: POWI is the topology rentier in the AI-power-delivery cohort — the only volume supplier of 1,250 V and 1,700 V GaN switches, with the IP to enable direct 800 VDC conversion. At $79.33, the sell-side consensus PT (~$52-53) remains well below spot, meaning analysts still haven't re-rated to the AI-power-delivery narrative.

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Quick Snapshot

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Action Matrix

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Price Data

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Company Overview

One-Liner

POWI designs analog/mixed-signal high-voltage power-conversion ICs (AC-DC, DC-DC, gate drivers, motor drivers) and is the only volume supplier of 1,250 V and 1,700 V GaN switches — the building blocks for direct 800 VDC AI data-center power architectures.

Business Model

Key Segments (FY2025)

Geographic Mix

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Competitive Analysis

Industry Position

Competitive Moat

Moat Assessment

Moat Width: Narrow today, Widening if direct-conversion wins Moat Trend: Widening (NVIDIA Kyber 800 VDC partner inclusion + only-volume-supplier status)

Summary:

POWI's moat is process IP and topology IP in the highest-voltage GaN regime. They can do something nobody else has demonstrated in volume — handle 800 V input directly. If the industry collapses the 48 V→12 V→0.8 V ladder into a 800 V→12 V→0.8 V (or even 800 V→1 V) flow, POWI's topologies are the reference. The risk is that the radical path stays radical for another generation, the way Vicor's factorized architecture did from 1981 to 2025.

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Management Assessment

Leadership

Founder Involvement

Capital Allocation

Red Flags

• Leadership transition during AI inflection — uncomfortable timing
• Insider selling into the rip (-$14.1 M YTD net)
• Excessive exec compensation
• High turnover (just two new C-suite hires; not turnover, but instability signal)
• Aggressive accounting

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Financials

Key Metrics

Quality Checks

Revenue Quality

Leading Indicators

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Valuation

Current Multiples

Historical Range

Fair Value Estimate

My Fair Value: $65-$75 base case (still below current); $95+ requires ongoing confirmation of PowiGaN data-center adoption.

Critical valuation note: Wall Street consensus PT of $52-53 is now well below the current $79.33 price by ~34%. The pullback from $84 to $79 is a healthier setup than the peak, but analysts still haven't re-rated. Q2 print is the next catalyst.

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Bull Case

Why This Could Work

1. Radical topology is the long-run endgame.

   • Evidence: Princeton LEGO-PoL 48 V→1 V at 780 A in a merged hybrid stage. POWI 1,250 V PowiGaN does 800 V→12 V in a half-bridge. 1,700 V InnoMux-2 supports 1,000 VDC input with >90.3% efficiency to 12 V system in liquid-cooled fan-less 800 VDC.
   • Implication: Direct conversion is no longer theoretical — it's NVIDIA Kyber's stated direction. POWI is the only volume supplier of the parts that enable it.

2. PowiGaN +40% FY25 is the leading edge of an inflection.

   • Evidence: 175 M+ GaN switches deployed across fast chargers, data centers, EVs. PowiGaN product revenue +40% FY25 off a small base. Industrial segment +15% (high-power gate drivers, EV charging, metering).
   • Implication: The base is small but the growth slope is steep. If data center adds even $50 M to the AI-power-delivery line by FY27, that's 10%+ of total revenue at high incremental margin.

3. Established business gives the radical thesis a floor.

   • Evidence: $443 M FY25 revenue, 21% FCF margin, dividend-paying ($0.215/Q), $99 M total liabilities vs. $772 M assets, 100% earnings beat rate.
   • Implication: Unlike NVTS (-$ losses, micro-cap), POWI has a real business under the optionality. You're not paying for hope alone.

4. Topology IP rents are a different revenue model.

   • Evidence: NVIDIA Kyber 14-partner list inclusion. POWI publishes reference designs used by ODMs.
   • Implication: POWI doesn't have to win every socket — they can win on the topology design itself.

5. SMA20 consolidation at RSI 54 = cleaner entry than prior checkpoints.

   • Evidence: RSI 54.2 is cooler than May 29 (67.3) and May 1 (75). Price at SMA20 support ($78.88).
   • Implication: The risk/reward at $79 is better than at $84.

Upside Scenario

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Bear Case

What Could Go Wrong

1. Radical topology doesn't win commercially — the Vicor curse.

   • How it plays out: 1,250 V / 1,700 V PowiGaN technically capable, but MPS multi-phase + Infineon/Delta VPD remain "good enough" through Vera Rubin and Feynman.
   • Probability: High — base rate for radical power architectures is bad.

2. Data center revenue is much smaller than the headline.

   • How it plays out: PowiGaN +40% off a small base means ~$15-25 M of data-center revenue in 2025 — meaningful at the gross-margin level, immaterial to total revenue.
   • Probability: High — confirmed by current numbers. The thesis requires 2027-2028 ramp.

3. Insider selling into the rip is signaling something.

   • How it plays out: $14.1 M net insider sales YTD with zero buys; leadership transition at the moment of an AI-narrative spike.
   • Probability: Medium — cluster is real.

4. Tariffs and China exposure (~75% revenue).

   • How it plays out: Trade-policy escalation hits consumer volume; Innoscience (China) takes share in lower-voltage GaN.
   • Probability: Medium — explicitly called out in 10-K risk factors.

5. Valuation has run ahead.

   • How it plays out: Spot $79.33, sell-side PT $52-53, P/E ~115x at depressed earnings. Mean reversion alone is -34% to PT consensus.
   • Probability: Medium-High for short-term mean-reversion.

Thesis Killers

• Q2 2026 print confirms PowiGaN data-center is <5% of revenue with no acceleration commentary
• NVIDIA Vera Rubin reference design selects Navitas 800 V→6 V GaNFast or TI 800 V→6 V over POWI 1,250 V direct
• New CEO appointment de-emphasizes data-center / radical-topology strategy
• China tariff escalation cuts FY26 revenue >10%

Downside Scenario

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Market-Moving News

Historical (What Moved POWI Before)

Recent News

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Related Markets & ETFs

Sector Context

The whole AI-power-delivery cohort is moving together. ON +146% 1Y RSI 81, MPWR RSI 67, VICR RSI 69, NVTS RSI 67 +31% above SMA20. POWI at RSI 54.2 is now below cohort average — the cleanest relative entry in the basket.

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Cross-References (Where This Appears in Our System)

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Related Tickers to Monitor

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Catalysts & Timing

Upcoming Catalysts

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Entry Strategy

Position Sizing

My conviction: Medium Target allocation: 3% (basket allocation alongside MPWR, AOSL, VICR, NVTS)

Entry Approach

Technical Levels

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Research Checklist

Fundamentals

• Read most recent 10-K (filed 2026-02-06)
• Listen to Q1 2026 earnings call (May 7 — passed; review transcript)
• Review investor presentations (OCP white paper Oct 2025)
• Understand revenue drivers (industrial, consumer, computer, comm)

Competitive

• Map competitive landscape (NVTS, IFX, MPWR, TXN, ON, AOSL, VICR, EPC)
• Assess moat durability (process IP narrow, topology IP strong)
• Check customer reviews / NVIDIA Kyber design-in confirmation

Management

• Research CEO/CFO background (Balu retiring, Nancy Erba new CFO)
• Check insider ownership (-$14.1 M YTD net, 0 buys / 58 sells)
• Review capital allocation history (conservative, R&D-heavy, dividend)

Valuation

• Review historical multiples (P/E ~115x at depressed earnings)
• Compare to peers (vs. MPWR P/E ~50x, NVTS unprofitable)
• Identify entry/exit zones

Risk

• Write bear case
• Identify thesis-killers
• Set stop-loss level ($58.65)

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Sources

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Research Log

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The Gold

Key Discoveries

Open Questions

• What did Q1 2026 (May 7) say about PowiGaN data-center revenue segment? (review transcript)
• Does NVIDIA Vera Rubin reference design select POWI 1,250 V over Navitas 800 V→6 V or TI 800 V→6 V?
• Who replaces Balu and what is their stated AI strategy?
• Is the China revenue (~75%) at risk under 2026 trade policy?
• Should we track this as part of ai-power (delivery side) or open a new ai-power-delivery watchlist?

Decision

SMA20 consolidation at RSI 54 is the cleanest entry setup since May 1. Entry zone is $75-$80. Consider 1-2% starter at current levels; build to 3% if Q2 confirms PowiGaN data-center traction. Stop at $58.65. Target $95.