AI's Next Bottleneck Is Light: Why Optical Interconnect Is Having A Moment

The AI trade started with GPUs, moved to memory, and the next bottleneck is moving data between all those chips fast enough. That is an optical problem, and it is why names tied to optical interconnect are suddenly the hot second leg.

Marvell is the cleanest large-cap play

Marvell jumped over 10% as the market connected the dots: Jensen Huang publicly flagged it as a future trillion-dollar company, Wells Fargo sees a path to more than 10 billion in custom compute revenue, and the company bought Celestial AI to push deeper into optical interconnect. This is no longer a single stage quote, it is a product and acquisition story.

Nokia is the sleeper

Boring old Nokia has quietly become an AI networking play, with JPMorgan lifting its target sharply and its optical and routing gear sitting right in the data center build-out. After a huge run it gives back on profit-taking days, but the multi-year thesis is intact.

The caution

The pure small-cap optical names like AAOI move 10 to 15% in a day in both directions and have already had violent drawdowns. I would rather own the theme through the larger, more durable names than chase the most volatile ticker on a green day.