What Happened?
Shares of materials and photonics company Coherent (NYSE: COHR) jumped 7.2% in the afternoon session after sentiment improved following the company’s recent addition to the S&P 500 index and positive updates regarding its technology for artificial intelligence infrastructure.
The inclusion in the major stock index sparked heavy buying from funds that track the benchmark. Investor confidence was also boosted by the company's strong position in the AI sector, underlined by its new 400 Gbps silicon photonics technology for high-bandwidth data centers. The development occurred amidst broader market excitement around artificial intelligence hardware, which provided an extra lift to the stock's performance.
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What Is The Market Telling Us
Coherent’s shares are extremely volatile and have had 53 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.
The previous big move we wrote about was 14 days ago when the stock gained 6.9% on the news that Stifel raised its price target on the stock, citing the company's strong position to benefit from the buildout of AI datacenters.
The analyst firm increased its price target to $275 from $235 while keeping a Buy rating. This decision followed Coherent's presentation at the OFC 2026 conference, where it showcased innovations for AI-driven networks, including advanced optical solutions. Stifel noted that the company stood as a key beneficiary of the expansion in AI datacenters. This positive outlook also came just two weeks after NVIDIA made a $2 billion strategic investment and a multi-billion dollar purchase commitment in Coherent, reinforcing investor confidence in the company's growth path.
Coherent is up 30.5% since the beginning of the year, but at $253.68 per share, it is still trading 15.1% below its 52-week high of $298.91 from March 2026. Investors who bought $1,000 worth of Coherent’s shares 5 years ago would now be looking at an investment worth $3,553.
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