Pre-market collective comeback! Marvell jumps 6%, Lumentum breaks $800.

U.S. stock futures ahead of Tuesday (7/21) trading, the entire fiber-optics communications concept stocks sector turned red-to-green. Marvell rose to $206.92, up 6.15%; Coherent broke above $301, up 5.47%; Lumentum, Applied Optoelectronics, and Ciena also all rose more than 4%, and the pure-photonics ETF “FOTO,” which only listed at the end of May, rose as well by 3.96%.

(Background: “White-hair stock god” Serenity: JLC Creative is the TSMC of the optical communications industry; Goldman’s target price was raised to 2,581 yuan RMB.)

(Additional context: “White-hair stock god” Serenity: OpenAI and Amazon’s new networking architecture “will not weaken demand for optical modules.”)

Key summary

• Marvell reported $206.92 premarket, up 6.15%, leading six optical communications concept stocks higher
• Coherent up 5.47%, AAOI up 5.11%, Lumentum up 5.10%, Ciena up 4.06%
• All six had no stock-specific news at the same time; meanwhile Nasdaq 100 futures rose 1.3% and chip stocks spearheaded a rebound

Ahead of Tuesday’s U.S. stock session (7/21), optical communications concept stocks turned broadly green. Before around 6:50 a.m. Eastern Time, Marvell (MRVL) was at $206.92, up 6.15%, the strongest among the six, and it had just closed up 3.32% on the prior trading day.

The other five also moved up together:

• Coherent (COHR): $301.00, up 5.47%
• Applied Optoelectronics (AAOI): $108.28, up 5.11%
• Lumentum (LITE): $804.56, up 5.10%
• Ciena (CIEN): $394.16, up 4.06%
• Tuttle Capital pure-play photonics ETF (FOTO): $20.21, up 3.96%

This rally is chips overall “coming back to life”

Optical communications isn’t moving on its own. At the same time, Nasdaq 100 futures rose 1.3%, S&P 500 futures rose 0.5%, and Dow futures rose 0.3%—chip stocks were leading the group. In Asia, South Korea’s KOSPI was up more than 2% in the early session, with momentum coming from semiconductors as well.

Nvidia was slightly higher premarket; the market is digesting its investment in neocloud (a new cloud computing infrastructure provider) Nebius. The opposing force comes from geopolitics: tensions between the U.S. and Iran pushed Brent crude oil toward nearly $90 per barrel, and U.S. stocks closed lower on Monday because of this.

Over the next few days, Tesla and Alphabet (Google) earnings will be released one after another; what the market really wants to see is whether AI capital expenditures will be increased.

Frequently asked questions

Why are optical communications concept stocks rising together?

This run-up has no stock-level news. On July 21 premarket, the six optical communications stocks rose in sync; at the same time, Nasdaq 100 futures rose 1.3% and South Korea’s KOSPI rose more than 2%. It’s sector-wide rotations driven by money flowing back into chip stocks—not a single positive catalyst.

What ETF is FOTO?

FOTO stands for Tuttle Capital Pure Play Photonics ETF. It listed on May 29, 2026, with a size of about $139 million. It actively selects stocks, investing only in companies whose revenue mainly comes from photonics, covering areas such as lasers, optical transceiver modules, and silicon photonics.