NAICS 523991: Trust, Fiduciary, and Custody Activities
This U.S. industry comprises establishments primarily engaged in providing trust, fiduciary, and custody services to others, as instructed, on a fee or contract basis, such as bank trust offices and escrow agencies (except real estate). Cross-References.Show more
NAICS 523991 – Trust, Fiduciary, and Custody Activities encompasses the administration of assets held in trust, fiduciary oversight, and custody services for government entities, public funds, and federally affiliated beneficiaries. This sector includes the management of retirement trusts, employee benefit plans, escrow arrangements, and asset safeguarding under legal and regulatory frameworks such as ERISA and federal fiduciary standards.
Industry Spending Overview
Federal obligations, top contractors and agencies, and related industry codes for NAICS 523991.
AI Industry Description
NAICS 523991 – Trust, Fiduciary, and Custody Activities encompasses the administration of assets held in trust, fiduciary oversight, and custody services for government entities, public funds, and federally affiliated beneficiaries. This sector includes the management of retirement trusts, employee ...
NAICS 523991 – Trust, Fiduciary, and Custody Activities encompasses the administration of assets held in trust, fiduciary oversight, and custody services for government entities, public funds, and federally affiliated beneficiaries. This sector includes the management of retirement trusts, employee benefit plans, escrow arrangements, and asset safeguarding under legal and regulatory frameworks such as ERISA and federal fiduciary standards. Services typically involve portfolio administration, disbursement scheduling, compliance reporting, risk mitigation, and reconciliation of holdings. While not a traditional procurement category like IT or construction, this NAICS plays a critical supporting role in the financial integrity of federal programs, particularly those involving long-term benefit obligations, endowments, or trust-funded initiatives. Its presence in government contracting is often indirect, embedded within broader financial services contracts or administered through specialized financial institutions contracted by federal agencies. No contractor data is available to identify leading firms in this NAICS code within the government contracting ecosystem. However, entities operating in this space are typically large financial institutions with trust divisions, specialized fiduciary service providers, or federally chartered custodians with demonstrated compliance capabilities. No agency data is available to pinpoint primary buyers, but demand is likely driven by agencies managing trust funds, such as the Department of the Treasury, the Social Security Administration, or the Department of Labor, particularly in programs involving pension disbursements, deferred compensation, or federal employee benefit trusts. The competitive landscape is highly regulated and characterized by low transaction volume but high compliance barriers, favoring incumbents with established fiduciary governance frameworks. Opportunities exist for contractors with expertise in regulatory reporting, digital asset custody, and audit-ready financial systems, particularly as agencies modernize legacy trust administration processes. Market entry requires deep familiarity with federal fiduciary law and strong internal controls.
Small Business Size Standard
The SBA threshold that decides who can bid NAICS 523991 work as a small business.
The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.
13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.
Top Contractors
Companies with the highest total award value under NAICS 523991, ranked by dollars won.
| Company | Total Awards | Contracts |
|---|---|---|
| LEXISNEXIS RISK SOLUTIONS INC | $2.7M | 1 |
| MISCELLANEOUS FOREIGN AWARDEES | $11K | 3 |
| GUIDEHOUSE INC. | $0 | 1 |
Top Agencies
Federal agencies directing the most contract spending toward NAICS 523991.
Competition
How many companies historically bid on federal awards in NAICS 523991, from bidder counts reported on USAspending.
Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 503 reported awards
Median Bidders
1
Per reported award, all-time
Single-Bid Awards
93%
Share of reported awards with one bidder
10+ Bidder Awards
0%
Share of reported awards with 10+ bidders
Reported Awards
503
97% of 517 total awards
Share of reported awards in each bidder-count bracket per federal fiscal year.
How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.
| Industry Family | Competition | Median Bidders | Single-Bid | Bidder Mix | Reported Awards |
|---|---|---|---|---|---|
523991This Code Trust, Fiduciary, and Custody Activities | Usually Single-Bid | 1 | 93% | 50397% of 517 | |
52399NAICS Industry | Usually Single-Bid | 1 | 65% | 2,52487% of 2,917 | |
5239Industry Group Other Financial Investment Activities | Usually Single-Bid | 1 | 77% | 28,44395% of 30,049 | |
523Subsector | Usually Single-Bid | 1 | 76% | 29,55095% of 31,253 | |
52Sector Finance and Insurance | Usually Single-Bid | 1 | 71% | 55,86385% of 65,585 |
Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.
Related NAICS Codes
Industries similar to Trust, Fiduciary, and Custody Activities, by shared sector, subsector, and industry group.
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