Glossary · Technology & Data
Accounting Book of Record (ABOR)
An accounting book of record (ABOR) is the official, accounting-grade record of a fund’s positions, income, expenses and NAV at each valuation point.
The ABOR is the book used for NAV calculation, financial statements, investor reporting and audit. It records positions at approved prices, accrues income and expenses, applies fee calculations and posts everything to a double-entry general ledger. It is typically maintained by the fund administrator, with the manager often keeping a parallel ABOR through shadow accounting.
ABOR is struck at defined points, such as daily, monthly or quarterly close, and is expected to be complete and final for that period. This contrasts with the IBOR, which is updated intraday for investment decisions. Differences between IBOR and ABOR usually trace to timing, pricing source, accrual methodology or corporate action treatment.
Common pitfalls include inconsistent pricing policies between the two books, manual adjustments made in ABOR without an audit trail, and a chart of accounts that cannot produce the share-class or investor-level detail the fund documents require.
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Where this comes up in our work
IBOR/ABOR Setup
Portfolio managers need intraday positions. Accountants need official books. We design both, connect them to the same data and reconcile them every…
Read more →SolutionsIBOR/ABOR Migration
A books-of-record migration fails on data, not software. We map, load, reconcile and cut over with agreed tolerances and a rollback plan you can ac…
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