523150 — Investment Banking and Securities Intermediation
Description
This industry comprises establishments primarily engaged in underwriting, originating, and/or maintaining markets for issues of securities, or acting as agents (i.e., brokers) between buyers and sellers in buying or selling securities on a commission or transaction fee basis. Investment bankers act as principals (i.e., investors who buy or sell on their own account) in firm commitment transactions or act as agents in best effort and standby commitments. This industry also includes establishments acting as principals in buying or selling securities generally on a spread basis, such as securities dealers or stock option dealers (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Bond dealing (i.e., acting as a principal in dealing securities to investors)
- Mutual fund agencies (i.e., brokerages)
- Securities brokerages
- Securities underwriting
- Stock brokerages
- Stock options dealing
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 6211 - Security Brokers, Dealers, and Flotation Companies (via SIC1987:6211→NAICS1997:52312→2002:523120→2007:523120→2012:523120→2017:523120→2022:523150)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC R710 — Financial Services (includes credit card services and any other financial services. See revision to description for code R703 above)
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 523150 valid in 2022? ▾
Yes, 523150 is a valid 6-digit 2022 NAICS national industry code representing 'Investment Banking and Securities Intermediation' under Sector 52 in the official classification index.
What is the SBA size standard for NAICS code 523150? ▾
The Small Business Administration (SBA) has established a small business size standard of $47,000,000 for NAICS code 523150 (Investment Banking and Securities Intermediation), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 523150? ▾
According to official Census Bureau concordance tables, NAICS code 523150 (Investment Banking and Securities Intermediation) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 6211 - Security Brokers, Dealers, and Flotation Companies.
Related Pages & Tools
Further regulatory reference links for NAICS code 523150:
- Sector 52 Directory Hub — List of related industries in the Finance and Insurance sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 523150 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Investment Banking and Securities Intermediation).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.