The optical book closed another broad rally: 25 of 28 names finished green on Friday, MaxLinear jumped 14.99% in a day to sit 97.6% above its 200-day, and Lumentum is now within -0.57% of its 52-week high after a 539.42% trailing year. Only six names remain below their 200-day average, down from nine a week ago, and Aeluma is the single name with negative trailing-year alpha. The question this week is no longer who is broken but who is extended: three names are at RSI 70 or higher, and none of the day's biggest moves has a dated cause on file.

Numbers are the settled October 2 close for all 28 names (Friday), one week after the September 25 scan. LAZR still carries no 200-day or trailing-year comparison (too-young regime). Comparison baseline is the September 25 scan.

The rally is the story. Twenty-five names closed green, the three decliners were Sandisk (-3.79%), Astera Labs (-1.71%) and Tower Semiconductor (-0.18%), and the book's trailing-month gains are large across the board: Semtech +45.6%, test-equipment name Aehr +33.61%, AXT +50.78%, MaxLinear +76.26%. MaxLinear is the extreme: 553.89% on the trailing year and 97.6% above its 200-day. Its news pull (re-pulled 2026-10-03) shows only its investor page (an earnings-date notice and a September 28 product launch), and an October 2 X post calls the day a breakout without naming a cause, so the day and the month are cause unknown (stock-events checked); the stock is extended on every measure the desk checks.

Lumentum is the cleanest leader: 45.6% above its 200-day, -0.57% from its 52-week high, trailing year 539.42% with alpha 524.42. The desk's thesis rating on it is intact. Its only dated item is a late-September officer share listing, which says nothing about Friday's 3.79% gain. A name at its high after a five-fold year is a hold, not a fresh entry.

The repair underneath is the better news. Syntec Optics rose 12.7% and now sits 18.4% above its 200-day, reversing last week's re-cross below the line; Applied Optoelectronics is 6.2% above after a 7.71% day; Fabrinet's trailing-year alpha is now positive at 10.47 though it is still 12.8% below its 200-day. What is left under the line is mostly the small, development-stage group (Lightwave Logic, POET, Aeluma) and LightPath, where the business-quality veto applies regardless of chart.

Sandisk is the one large name that gave ground (-3.79% on the day, -3.25% on the week) but it is still 50.1% above its 200-day with a 1285.52% year, a pullback inside an intact trend. News pulled 2026-10-03 carries only a MarketBeat page attributing the slide to sector sentiment, profit-taking and valuation, with no dated event; stock-events checked; cause unknown.

• Names below their 200-day: six today (LWLG, FN, PLAB, LPTH, POET, ALMU) versus nine in the September 25 scan. Ciena, Applied Optoelectronics and Syntec Optics are out of that group.
• Negative trailing-year alpha: one name (Aeluma, alpha -37.14) versus two on September 25; Fabrinet crossed to positive.
• Breadth: 25 of 28 green today after a 24-of-28 green session on September 25, so the book has now rallied in back-to-back scans.
• Overbought count: three names at RSI 70 or higher (FORM, VIAV, MXL); no name is below RSI 40 (lowest is Aeluma at 47.2).
• MaxLinear remains the largest single-day mover in the book for a second scan running (14.99% today).

Two layers. The short layer (RSI, vs SMA20) says the book is extended: every name except Jabil is above its 20-day, and eight are more than 15% above it. The long layer (trailing year, 200-day, alpha) says the book is in a durable uptrend with a small unrepaired tail. Do not read the short layer as a sell signal in names with a triple-digit trailing year; read it as a reason not to chase.

Names under their 200-day with positive trailing-year alpha (Lightwave Logic, Fabrinet, LightPath, POET, Photronics) are trends under test, not breakdowns. Aeluma is the one that fails every long window and is rated no-view.

Source limits: this board is price and RSI against the 20-, 50- and 200-day lines. It carries no insider dollars, no estimates and no filings. A low or high RSI here is screen evidence, not a setup, and the desk's thesis rating is unrated for most names; only Lumentum, Ciena and POET carry one.

Rows are ordered by RSI, highest first. Tape cells are live values for the October 2 close; the Signal column is the desk's label.

Capitulation (RSI below 25): none.

Oversold (RSI 25-40): none. The lowest RSI in the book is Aeluma at 47.2.

Neutral to strong (RSI 40+): all 28 names. Overbought (70+): Viavi (72.6), FormFactor (72.8), MaxLinear (71.5). Near overbought (65-70): MACOM (67.7), Onto Innovation (67.6), Lumentum (66.7), Semtech (66.1), Celestica (65.5).

• Tape data (price, RSI, moving averages, returns, trailing-year, alpha, 200-day position): pre-computed summaries as of the 2026-10-02 close — optical-supply-chain.
• Cause checks: news receipts under stocks<SYM>/news/latest.json(all fetched on or before 2026-10-01), stock-event files inresearch/stock-events/` (2026-10-01-nke-earnings, 2026-10-01-vylr-spinoff), capture articles in articles.
• Tradability: _securities.
• Prior scan for comparison: 2026-09-25-optical-supply-chain.