Applied Optoelectronics Rises While Broadcom Falls on AI Chip Demand

Published by James Harris on June 26, 2026June 26, 2026

The optics selloff that rattled photonics stocks in late June was not a sector-wide collapse. It was a sorting mechanism, and the distinction matters.

Applied Optoelectronics fell 13.9%, Coherent dropped 10.4%, Sivers Semiconductors shed 8.7%, and Lumentum lost 7.4% on the same day the VanEck Semiconductor ETF lost 7% and the CBOE Volatility Index climbed 12.8%. The proximate cause, per a Motley Fool analysis cited by AOL, was weakness in the Korean semiconductor market rather than any deterioration in the companies themselves. That framing is important: macro pressure hit an entire sector, but the underlying supply chain thesis for laser and photonics hardware did not change. Analyst Serenity, posting on X, said she was “actually more bullish than ever as prices go down,” pointing to Sivers Semiconductors’ strategic positioning across GlobalFoundries, Ayar Labs in NVIDIA’s NVLink co-packaged optics ecosystem, POET Technologies, Jabil for 1.6T transceivers, and O-Net for ELS mass production. Capital that might have chased crypto narratives in a prior cycle is now chasing verifiable earnings growth in AI infrastructure, and sudden volatility in that trade creates the same kind of knee-jerk selling that once wiped out altcoins indiscriminately during Bitcoin corrections.

The Broadcom earnings episode from June 4 is the cleaner illustration of what is actually happening. Broadcom posted $22.2 billion in revenue with 143% year-on-year AI semiconductor revenue growth, and its stock still fell 12.6% because forward guidance missed elevated expectations. Applied Optoelectronics, by contrast, rose 11.8% to close at $202.89 on the same day.

That divergence is the signal. The AI trade is splitting between companies exposed to demand and execution risk and those exposed to supply constraint, and the market is starting to price them differently.

Serenity’s position on Sivers, which carries a market cap around $1.9 billion, rests on the company’s role as a laser source supplier at a moment when continuous wave laser supply is genuinely constrained. BlockBeats extended that thesis by attributing recent negative Swedish press coverage and a 15% share swing to the mechanics of Nasdaq’s listing approval process rather than any financial deterioration. On AAOI, Serenity pointed to management’s target of approximately $471 million in monthly revenue in the second half of 2027 and roughly $1.4 billion raised through at-market equity offerings. The comparison she drew to Nebius, which traded near $70 before its operating metrics could support its valuation and later crossed $250, suggests she sees current prices as a timing gap, not a thesis break.

A Nikkei Asia report flagged this segmentation trend earlier, and the June volatility confirmed it in real time. Hardware bottlenecks tied to physical supply, laser diodes, optical transceivers, indium phosphide substrates, are increasingly being priced on available capacity rather than sentiment. That is a more durable pricing mechanism than momentum, and it is exactly the kind of structural dynamic that tends to get ignored during a broad selloff.