The phrase "particular segment" refers to a specific group or section within a larger whole. It means focusing on a particular part or category instead of considering the entire thing. Full definition
You can also invest in sector - specific ETFs, which contain stocks of companies in particular segments of the economy — from the communications sector to utilities and health care. (grow.acorns.com)
A price on carbon is only the first step, a macro effort that must be followed by hundreds of micro efforts focused on particular segments of the economy. (grist.org)
While those by African American artists represent less than 10 percent, they have a real presence overall and within particular segments. (culturetype.com)