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Call sheet · Q1'26

MACOM Technology Solutions Holdings (MTSI)

Q1'26 earnings call · held February 5, 2026 · compared with the Q4'25 call · management-credibility review
5/12
Disclosure score
1 high, 4 medium, 3 low flags
Financial quality
Bottom line
The sleeper story is MACOM hit a physical capacity wall in photodetectors just as 1.6T is exploding, and they're scrambling to qualify a new fab. The Street sees 35-40% data center growth and celebrates, but the binding constraint is indium phosphide capacity at Ann Arbor, not demand. Management buried the lead: 'Our Ann Arbor fab is approaching maximum capacity.' That $55M satellite contract slipping is the canary; aerospace customers don't accept 'system changes' excuses unless something's wrong. My view changes if Mass fab yields match Ann Arbor by Q2.

The 30-second version

  • The photodetector capacity crisis nobody's talking about: Ann Arbor fab is maxed, Mass fab qualification rushed
  • Data center growth raised to 35-40% YoY but book-to-bill dropped to 1.3x from stratospheric October
  • That $55M satellite contract just slipped into 2026 with vague 'system changes' excuse

What changed this quarter

MetricQ4'25Q1'26Change
Revenue$261.2M (30.1% YoY)$271.6M (24.5% YoY)Deceleration despite sequential growth
Adjusted EPS$0.94$1.02First time breaking $1/share
Data Center Revenue$79.6M$85.8M (8% QoQ)Accelerating but below guided potential
Industrial & Defense Revenue$115.6M$117.7M (2% QoQ)Decelerating from 7% prior QoQ
Telecom Revenue$66.0M$68.1M (3% QoQ)Bounced from negative QoQ
Book-to-Bill1.0x1.3xImproved but October was supposedly stronger
Turns Business14.5% of revenue23% of revenue+850 bps surge in short-cycle orders
Operating Cash Flow$69.6M$42.9M-38% QoQ collapse
DSO52 days54 daysReceivables stretching
Inventory$237.8M$238.9MBuilding despite strong demand

Accountability tracked

8 new promises made5 narrative shifts flagged6 prior promises scored
Inside the full report
The complete write-up covers the full promise ledger with kept/missed calls, disclosure-quality scoring, the metrics-vanished check, verification items, and the questions to ask next quarter.
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Scores, kept-promise rates, and flags on this site reflect the author's opinion, applying a stated methodology to statements management made on public earnings calls. Informational and educational purposes only - not investment advice, a recommendation, or an offer to buy or sell any security. Sources believed reliable but not guaranteed; the author may hold positions in the securities discussed.

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