Lumentum and Credo Fall Under Their 200-Day Lines; No Core Optical Name Holds One

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Lumentum and Credo Fall Under Their 200-Day Lines; No Core Optical Name Holds One

10 tickers referenced · published Oct 22, 2026

Article published Oct 22, 2026. Prices below use latest available snapshots.

LITE $756.17 -19.3% 30d COHR $209.29 -30.4% 30d CIEN $320.26 -10.0% 30d FN $314.94 -21.4% 30d CRDO $147.29 -24.0% 30d AAOI $67.51 -33.2% 30d MTSI $236.24 -14.4% 30d TTMI $80.11 -36.3% 30d MXL $63.46 -24.7% 30d SMTC $132.00 -22.1% 30d

No core optical name holds its 200-day line anymore. On October 22 Lumentum fell 11.54% and closed 4.3% under its 200-day average ($786.23), and Credo fell 10.7% and closed 10% under its own (the desk's summaries, October 22 close). The October 21 Momentum Board had them 8% and 1% above. All five of the optical campaign's core names (Lumentum, Coherent, Ciena, Fabrinet, Credo) now sit below the line. The 28-name optical list went 0 for 28 with a median one-day drop of 10.85%, the worst one-day median among the 125 groups the desk ranks, against a 1.18% drop for SPY; on 30-day relative strength it ranks 120th. The four names still above their 200-day lines are three chip suppliers and a memory maker: MaxLinear, Semtech, Astera Labs and Sandisk. On October 2 the tape was paying for scarce lasers. Three weeks later it pays only for a few chip names, and the November reports have to win the laser premium back.

The question

Is this the shortage trade ending, or an AI-funding flush running through multi-year uptrends? Price alone cannot answer it. Every core name except Fabrinet is still up on the year, so these are long trends under test, not broken ones. Fabrinet, Coherent and Lumentum are scheduled to report between about November 2 and November 5. That window is the campaign's failure test: order weakness with margin deterioration across two supplier reports ends the thesis.

What the tape is paying for

Each row is dated in the As of column. Percent columns are percent; relative volume is the day's volume against its average.

Stock Layer As of Price ($) 1D (%) 30D (%) 1Y (%) vs SMA200 (%) From 52-wk high (%) Rel. volume (x)
LITE Lasers, components 2026-10-22 752.54 -11.54 -20.42 376.11 -4.3 -34.16 1.29
CRDO Cables, optical DSPs 2026-10-22 162.77 -10.7 -15.47 18.64 -10 -47.27 1.1
MTSI RF and optical components 2026-10-22 229.73 -15.87 -17.86 69.03 -18.5 -45.16 1.9
CIEN Optical systems 2026-10-22 322.64 -10.71 -12.46 96.16 -19.7 -49.39 1.34
COHR Lasers, transceivers 2026-10-22 207.82 -12.51 -33.05 80.13 -29.6 -52.77 1.81
AAOI Transceivers 2026-10-22 68.07 -11.96 -36.38 127.05 -39.8 -70.87 1.29
FN Contract assembly 2026-10-22 317.67 -10.78 -21.33 -20.63 -39.9 -57.58 1.26
TTMI Circuit boards 2026-10-22 73.89 -27.67 -42.03 32.68 -42.3 -66.99 5.87
MXL DSPs 2026-10-22 65.28 -13.87 -25.33 289.03 11.7 -49.12 1.59
SMTC Drivers, TIAs 2026-10-22 125.12 -11.66 -28.23 92.11 1.6 -38.06 1.12
ALAB Connectivity chips 2026-10-22 257.82 -11.11 -29.07 66.5 2.3 -48.38 1.64

Lumentum is the closest to repair and Fabrinet the furthest. Every core name is under its 200-day and every one but Fabrinet is up on the year: trends under test. Fabrinet, down 20.63% over the year and 39.9% under its 200-day ($528.30), is basing; a reclaim of that line is what would end the base. Outside TTM, volume ran 1.1 to 1.9 times normal, which is heavy selling without a capitulation-sized day.

Lumentum went from its high to under its 200-day in three weeks. On October 2 it sat 0.57% under its 52-week high and 45.6% above its 200-day after a 539.42% year (this vertical's October 2 report). It lost 25.31% in the week to October 16 and held the line by 6.0% at that close (the October 16 optical scan). It is now 34.16% under its high. The October 2 report's watch call on Lumentum had its price invalidation, a close below the 50-day, flagged on October 16, when the stock closed at $824.13.

The buyers of optics held their lines; the suppliers did not. Cisco, Arista and NVIDIA closed 4.7%, 4.6% and 4.3% above their 200-day averages (the desk's summaries). No source on file explains the split.

What is in hand, and what is carried

No optical company put out news on October 22. News checked the evening of October 22 for Lumentum, Coherent, Ciena, Fabrinet, Applied Optoelectronics, Credo and MACOM carries no company announcement dated that day, and no company event is on file for any of them. The press reasons are sector-wide. MarketWatch listed Tesla's lower spending target, Lam Research's weaker-than-expected forecast and "a fresh reminder that the AI boom relies on outside funding." NVIDIA's Jensen Huang told CNBC that neocloud demand is "off the charts" but capital is scarce. Semafor said worries had coalesced around whether supply constraints will limit the buildout and whether revenue will keep up with the spending. Name-level coverage restates the tape: Quiver Quantitative called Lumentum's drop a continuing "AI optics pullback" ahead of earnings and said lower analyst targets weighed on Coherent; MarketBeat cited valuation and insider selling for Credo, whose CEO and CTO sold shares on October 19 and 20 (Form 4s). MACOM's 15.87% drop on 1.9 times normal volume has no attribution; its newest item is an October 21 Susquehanna Hold rating.

The one print in the stack was sold. TTM Technologies, which makes circuit boards for AI servers and defense, reported before the open: record revenue of $1.2B, up 60% (TTM's release), adjusted EPS of $1.46 against $1.26 expected (provider consensus), and a fourth-quarter revenue guide of $1.42B–$1.44B. It fell 27.67% on 5.87 times normal volume; StockStory put the drop on guidance that only matched estimates. A week earlier Semtech raised its fiscal third-quarter outlook at its October 15 analyst day (8-K) and fell 10.01% that session (the October 16 optical scan). Two prints in a week, two sell-offs on the day.

The supply news pointed the other way. NVIDIA's October 21 GTC Berlin supplier release, as relayed on X by dylan (@demian_ai), Serenity and Photon Capital, has SPIL expanding optical-engine capacity for co-packaged optics 15-fold by mid-to-late 2027, and quotes Huang: "Demand is extraordinary. Capacity is the constraint." The release itself is not in hand. After the October 22 close, MaxLinear beat, guided its fourth quarter to $240M–$260M against $226.7M expected, raised its 2026 optical data-center outlook to $250M–$270M and said bookings run into 2028 (Investing.com, including its call transcript); management also put optical lead times at 26–28 weeks (Motley Fool transcript). None of that is in the settled tape.

Lumentum's growth is filed; its shortage claims are not. Fiscal Q4 2026 revenue was $1.01B against $480.7M a year earlier (quarter ended June 27, per the filing), and the fiscal Q1 2027 guide is $1.225B–$1.275B (Lumentum's August 11 release; a guide, not a result). The CEO's statements that 2027 supply covers about 30% of demand (a forum transcription posted October 2) and that capacity is sold out through early 2029 (Bloomberg, relayed on X October 8–9) are still management guidance passed along by secondhand carriers. Bernstein's read, relayed on X on October 21, put the Coherent and Lumentum declines down to worries over AI revenue, customer financing and the macro backdrop.

Where it is stretched

  • MaxLinear is the last long trend with a premium: 11.7% above its 200-day after a 289.03% year, with a beat-and-raise landing after the close. Investor's Business Daily had the stock slipping in late trading. If a raise cannot hold here, Coherent and Lumentum report into the same tape.
  • Coherent's bar is high while its chart is low. It guided fiscal Q1 revenue to $2.2B–$2.4B and non-GAAP EPS to $1.85–$2.05, with consensus near the top of the range (Tickeron's October 17 preview; aggregator-carried guidance). The stock is 52.77% under its high. A print at the top of the guide is what estimates already assume.

What would change it

Watch Date What it tests
Lumentum's 200-day average live A close back above it after the report restarts the setup; staying under keeps the long trend under test
Fabrinet fiscal Q1 report around Nov 2 (provider estimate) Opens the two-report test: orders and margins as capacity is added
Coherent fiscal Q1 report Nov 4, after the close (company-set) Revenue against the $2.2B–$2.4B guide, and whether the next guide rises
Lumentum fiscal Q1 report around Nov 5 (provider calendar) Revenue against the $1.225B low end, and whether "sold out through early 2029" shows up in pricing and guidance
NVIDIA's supplier release text open Turns the relayed 15-fold co-packaged-optics engine ramp into a primary record
Short-reach substitution open MicroVCSELs and micro-LEDs drew attention at OCP (Viks Newsletter, Oct 22); Convequity argued on Oct 9 that on-package light sources and micro-LED links could take share from external lasers

The thesis breaks if added capacity or substitution shows up as order weakness and margin deterioration across two supplier reports.

Desk Call

Lumentum carries the call: it is the strongest long trend in the group and the closest to its line. The call waits for the print and the price to agree.

Field Call
Stance Watch
Entry A close back above the 200-day average ($786.23 at the Oct 22 close) after the report expected around Nov 5, with fiscal Q1 revenue inside or above the $1.225B–$1.275B guide and a fiscal Q2 revenue guide above that range
Invalidation Fiscal Q1 revenue below the $1.225B low end of guidance at the Nov 5 report, or a close below the one-year VWAP ($695.87 at the Oct 22 close)
Review by 2026-11-09

Sources

Tape: internal tape from the desk's summaries, settled October 22 close; company figures from the filings and releases linked above.