COHR, held small in his AI supply chain fund and possibly added to over time, supplies AI data-center optics: revenue rose 34% and is guided up 52% to $2.4 billion. Down 31% and at ~25 times forward earnings, in line with the Nasdaq 100, its drawback is ~40% gross margins versus TSMC's 66%.

And if you'd like to get a share at a bigger discount, Coherent makes optical network components for transmitting data in AI data centers using light instead of copper .

Data centers and communications accounted for 79% of its sales in the last quarter. Their revenues rose by 34% year-over-year, and they expect to generate revenues of up to $2.4 billion in their next report, which would represent a 52% year-over-year increase.

Coherent's stock, ticker symbol COHR, has fallen 31% since the start of the sell-off and is currently trading at a forward price-to-earnings ratio of around 25. The problem here is the slim profit margins , with Coherent's gross profit margins at around 40% compared to TSMC's 66%.

The Chat fund also includes Celestica, Vertiv, TSMC, ASML, Coherent, Micron, SK Hynix and Broadcom, making it an excellent way to own the entire AI supply chain.

The other four stocks, Google, Coherent, Vertiv and Celestica, each represent less than 2% of the total portfolio, so I can increase these investments over time if I wish.

At the bottom of the list, shares of Applied Materials, Google, Coherent and Vertiv trade at forward earnings ratios between 22 and 25 times , roughly the same as the Nasdaq 100.