Billionaire Ken Fisher’s 15 Most Notable Moves for 2026

13. Coherent Corp. (NYSE:COHR)

Fisher Asset Management’s Stake: $93 Million

Coherent Corp. (NYSE:COHR) only represents 0.03% of the total 13F portfolio of Fisher Asset Management. However, the notable move here is that the fund increased its stake in the firm by 34% during the fourth quarter of 2024, compared to filings for the previous quarter. Fisher first bought a position in the firm earlier in the year and added to it in the third quarter of 2025 as well. At the end of the fourth quarter of 2025, this holding comprised more than 500,000 shares. This holding seems like an AI bet, since Coherent is one of the key beneficiaries of the AI boom. The share price of the company has increased by close to 300% in the past year.

As Fisher invests in Coherent Corp. (NYSE:COHR), it is important to understand his overall outlook on AI and concerns about an AI bubble. Earlier this month, Fisher tackled AI during a YouTube appearance, noting that the AI bubble of the present was different from the dotcom bubble of the past because of one basic reason. This, per Fisher, is that most of the companies in AI today are huge companies with huge gross operating profit margins that are funding their AI efforts out of their huge growing profitability, profits in hand, their own cash flow, not based on selling stock. Fisher notes that, in the late 90s, dotcom was a bubble because it was all 100% fundamentally dependent on the companies doing it being able to continue raising money through stock sales.

Coherent Corp. (NYSE:COHR) develops, manufactures, and markets engineered materials, optoelectronic components and devices, and laser systems for the use in the industrial, communications, electronics, and instrumentation markets worldwide.