Analysis
NAICS 52321 is the 2022 NAICS industry for securities and commodity exchanges, part of 5232 (Securities and Commodity Exchanges).
It has only one more detailed code, 523210, which covers exactly the same activities; the definition, index entries and statistics are on that page.
Between 2018 and 2023 the number of establishments grew 35% and employment rose 22%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
County Business Patterns counts 54 US establishments in this code in 2023, employing 7,056 people at an average annual payroll of $227,142 per employee (100th percentile of national industries). 56% of the establishments have fewer than five employees, which is close to the national mix.
Official definition
See industry description for 523210.
Source: US Census Bureau, NAICS 2022 Manual.