MTSI · MACOM Technology Solutions Holdings, Inc. · Stock research

Current Thesis

MACOM is the analog/photonics arms-dealer to the AI optical-interconnect buildout TIAs, laser and modulator drivers, and DSPs feeding 800G / 1.6T / 3.2T datacenter links. The fundamental story has not cracked: on the Q2 FY26 call (late April 2026) management raised the FY26 Data Center growth guide from 35-40% to >60%, and the Q3 guide of $331-339M issued with that print still stands. What broke in July is the tape. From the $418.90 52-week high (early June) the stock has round-tripped ~36% to $267.36 (close 2026-07-17), down ~25% in a month while still +61% YTD. Three hits landed together: a broad semiconductor selloff on AI-valuation and hyperscaler-capex-slowdown fears; removal from the Russell 1000 Value and Russell Midcap Value indexes, forcing style-box holders to sell; and fresh oversupply / price-pressure headlines in satellite communications the same SATCOM TAM leg that was a June bull catalyst. Fundamentals accelerating, price structure broken, into a hard 2026-07-30 earnings print now ~8 trading days out. A broken chart into a binary is not an entry.

Bullish and bearish views on MACOM Technology Solutions Holdings, Inc.

The model's bull view on MACOM Technology Solutions Holdings, Inc. (MTSI), in brief: DC guide raised mid-cycle (Q2 FY26 call, late Apr 2026): FY26 Data Center growth lifted from 35-40% to >60%. The bear view: Chart is broken (July 2026): ~36% off the $418.90 high, below the 50-day and the early-June $340-350 shelf the prior structure leaned on. Both cases follow in full.

Bull Case

• DC guide raised mid-cycle (Q2 FY26 call, late Apr 2026): FY26 Data Center growth lifted from 35-40% to >60%. Nothing since has walked it back; the July drawdown reads as flow- and sentiment-driven rather than a guide cut. Stale sources still quote the old 35-40% the raise is the live number.
• Q3 FY26 guide intact (qtr ended 2026-07-03): revenue $331-339M (~+15% QoQ), adj GM 59-60%, adj EPS $1.31-1.37 sequential acceleration, printing 2026-07-30.
• Q2 FY26 beat (ended 2026-04-03): revenue $289M (+22.5% YoY) vs $285M consensus; adj EPS $1.09 vs $1.07 est.
• Sell-side raising into the weakness: Stifel reiterated Buy and lifted its target to $450 (from $385) ~2026-07-16, after the selloff was underway. Street high $450 (Barclays/Stifel); consensus average ~$356-403 against a $267 tape a wide gap the market is currently ignoring.
• Index removal is mechanical (July 2026): the Russell Value-benchmark exit forces value-style sellers regardless of the order book; that flow is finite and clears.
• OFC 2026 product leadership (Mar 2026): 3.2T optical transmit, 1.6T ecosystem, 448G/lane drivers positioned at the next interconnect speed node.
• IQE LTSA (May 2026): £45M equity/convertible commitment locking GaAs + InP wafer supply ahead of the 1.6T volume ramp.

Bear Case

• Chart is broken (July 2026): ~36% off the $418.90 high, below the 50-day and the early-June $340-350 shelf the prior structure leaned on. A momentum name that loses the 50-day into a binary owes nobody a bounce.
• SATCOM flipped from catalyst to worry (July 2026): the direct-to-device satellite leg touted in June now carries oversupply and price-pressure headlines a growth story turning into a margin question before it scaled.
• Valuation still momentum-rich after the drop: ~$20.4B cap (2026-07-17) on ~$1.3B annualized guided revenue is ~15x sales and ~90-100x trailing earnings. Cheaper than the June peak, not cheap, and it de-rates further on any guide wobble.
• Earnings binary in ~8 trading days: the 2026-07-30 print lands with the stock already in a downtrend; a merely in-line guide likely won't reverse forced selling, and a soft DC number would be violent.
• Hyperscaler-capex fear is the macro that started it (July 2026): the semi selloff was driven by worries that MSFT/GOOGL/META/AMZN AI spend plateaus; those four report late July, and MACOM is downstream beta to their capex tone.
• Pack-trade drag (July 2026): moves with COHR / LITE / CRDO / ALAB / MRVL; a group that rolls over together takes MACOM with it regardless of its own bookings.

Setup & Price Structure

Price $267.36 (close 2026-07-17), that session's range $255.02-$277.19 the ~$255 print marks the July capitulation low so far. 52-week range $118.16-$418.90; the stock now sits roughly mid-range having handed back the entire June parabola. The advance from the March-April base to the June high has fully unwound, and there is no basing yet July is a run of lower highs and lower lows on the semi selloff plus the Russell-exit flow. This is falling-knife territory into an earnings gap: broken 50-day, no higher low, and a binary catalyst about to enter the pre-print blackout. A constructive setup would need the print out of the way, a reaffirmed >60% DC guide, and a higher low holding above the $255-260 zone before any reclaim of the 50-day is worth chasing. Standing aside until it bases is the disciplined read; adding into the decline because the chart was strong in June is the trap.

Catalyst Calendar (next 30 days)

• ~2026-07-24 to 2026-07-31 Hyperscaler earnings cluster: MSFT / GOOGL / META / AMZN report AI-capex guidance; MACOM trades as downstream beta to their spend tone, and this cluster overlaps the MTSI print.
• 2026-07-30 Q3 FY26 print (qtr ended 2026-07-03): the binary. Watch revenue vs the $331-339M guide, the FY26 DC growth number (>60% must hold), adj GM 59-60%, and SATCOM commentary. Entries inside the 3-trading-day pre-print window carry uncompensated gap risk.
• Late July Russell reconstitution flow tail: residual forced selling from the value-index removal may persist into the print.

What Would Change Our Mind

The bearish read on the tape breaks if MACOM holds the $255-260 July low on a retest, prints Q3 on 2026-07-30 with the >60% FY26 DC growth guide reaffirmed, and reclaims the 50-day that would recast the July flush as a shakeout and re-open the long at a clean higher low. The other direction: a weekly close below $255 loses the July capitulation low and turns the pullback into a trend break; a Q3 guide that cuts FY26 DC growth back under 60%, confirmation that SATCOM oversupply is a demand rather than supply problem, or the optical pack (COHR / CRDO / ALAB) losing their 50-days together would flip the theme from a buyable pullback to saturated.

Correlation Notes

• Optical/interconnect pack: COHR, LITE (Lumentum), CRDO (Credo), ALAB (Astera Labs), MRVL (Marvell) highest daily correlation; the July drawdown was a group event, not an idiosyncratic MACOM break.
• AI-capex complex: SMH / SOXX and NVDA set the risk tone; hyperscaler capex guidance (MSFT/GOOGL/META/AMZN, late July) is the upstream driver of the entire optical trade.
• SATCOM read-through: ASTS and the direct-to-device satellite names the oversupply headline that hit MACOM's SATCOM leg is a shared risk factor.
• Supply chain: IQE (IQEPF) is a linked counterparty via the May 2026 £45M LTSA; monitor for wafer-supply distress.
• Style-flow idiosyncratic: the Russell 1000 / Midcap Value removal is MACOM-specific mechanical selling, uncorrelated to fundamentals and finite in duration.