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US Optical Communication Stocks Are Pulling Back — But The AI Infrastructure Story May Be Far From Over

The recent weakness across U.S. optical communication and AI-infrastructure stocks is getting investors’ attention, especially after a strong run in many high-growth technology names.

Stocks including Coherent, Lumentum, Applied Optoelectronics, Credo, Nokia and Marvell have come under selling pressure, while optical-module companies also moved lower during Thursday’s session.

At first glance, the move could look like a sign that investors are becoming less confident about the AI infrastructure trade.

But I think the situation is more complicated.

The key issue right now may not be weakening AI demand.

It may be the combination of elevated valuations, rising Treasury yields, inflation concerns and profit-taking.

That distinction matters.

The AI data-center expansion remains one of the strongest structural investment themes in the technology sector. As hyperscalers and enterprises continue increasing computing capacity, the amount of data moving between servers, racks and data centers is growing rapidly.

That creates a long-term requirement for faster and more efficient optical connectivity.

This is where companies such as Lumentum and other optical-component manufacturers remain strategically important.

However, strong fundamentals do not automatically protect expensive stocks from short-term valuation pressure.

When interest rates and Treasury yields rise, future earnings become less valuable in today’s terms. High-growth companies, which often depend heavily on expectations for future revenue and earnings expansion, can therefore experience larger valuation adjustments.

And that is exactly what makes the current environment uncomfortable.

The U.S. 10-year Treasury yield has recently moved to its highest level since 2002, while the 30-year yield has approached 5.72%. At the same time, oil prices moving back above $100 are creating renewed concerns about inflation.

That combination puts the Federal Reserve back into the spotlight.

If inflation remains persistent, markets may have to reconsider expectations for monetary easing. Higher-for-longer interest rates could place additional pressure on technology multiples, particularly in areas where investor expectations have already become extremely optimistic.

But there is an important difference between stock-price weakness and fundamental deterioration.

A stock can fall even when the industry behind it continues to grow.

That is why I would not interpret this pullback alone as evidence that the AI infrastructure cycle is finished.

Instead, the market appears to be asking a much more important question:

How much future AI growth is already reflected in current valuations?

For investors, I believe three indicators deserve close attention from here.

First, Treasury yields. A continued rise in long-term yields could create additional pressure on high-beta technology stocks.

Second, AI infrastructure spending. If hyperscalers continue increasing capital expenditure on data centers, networking and computing infrastructure, the long-term demand outlook for optical technology remains constructive.

Third, technical support levels. The next question is whether this selling develops into a deeper sector-wide correction or simply becomes another temporary pullback inside a broader uptrend.

In my view, the optical communication sector is currently facing a valuation reset rather than an obvious collapse in its long-term thesis.

The short-term environment may remain volatile, but the structural demand for bandwidth, connectivity and data-center infrastructure continues to provide an important foundation.

So the real battle is not simply bullish versus bearish.

It is strong long-term AI demand versus increasingly demanding valuations and a tougher macro environment.

That balance will likely determine whether this pullback becomes an attractive opportunity or the beginning of a much larger correction.

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