The US Tech 100 and Nasdaq-100 (Nas 100) are related but not exactly the same. The US Tech 100 typically refers to the NASDAQ-100 Index, but the terms are sometimes used interchangeably. Here's a breakdown:

US Tech 100:

This term is more general and might refer to any index that tracks technology stocks in the United States.
It could include various indices, but in most cases, it refers to the NASDAQ-100.
Nasdaq-100 (Nas 100):

This is a specific stock market index that includes 100 of the largest non-financial companies listed on the Nasdaq stock exchange.
The Nasdaq-100 is heavily weighted toward technology-related companies, including those in the information technology, telecommunications, and biotechnology sectors.
In summary, while the terms are often used interchangeably, "US Tech 100" is a broader term that could technically refer to any index tracking technology stocks in the U.S., but in common usage, it usually points to the NASDAQ-100 (Nas 100).