Asset managers & investment funds

From mandate to rebalance to attribution — one controlled investment workflow

OneBook connects portfolio mandates, benchmark-relative decisions, pre-trade controls, approvals and performance evidence across portfolios and investment teams.

See the connected workflow Explore Decision Packets
Instrument Master Identity
Warehouse Facts + compute
User State Decisions
Audit Evidence

The problem

Capable systems. A fragmented decision trail.

Traditional and boutique asset managers often have capable systems, but the decision trail remains fragmented:

  • Mandates exist in policy documents.
  • Target portfolios are built in local files.
  • Risk and compliance use separate rule sets.
  • Approvals are detached from the proposed portfolio.
  • Attribution is not connected to the original investment reasoning.

What OneBook provides

One versioned path from mandate to performance.

Convert mandates into testable portfolio rules

Represent benchmarks, universe definitions, position limits, sector bands, cash targets, turnover and risk constraints as versioned policy.

Create benchmark-aware portfolio decisions

Compare active weights, proposed changes and expected portfolio impact before the rebalance is submitted.

Apply consistent pre-trade controls

Evaluate each proposed portfolio against the relevant mandate and retain evidence of passes, warnings, breaches and overrides.

Explain allocation and selection

Connect performance to active weights, sector allocation and security selection.

Produce repeatable oversight evidence

Use a consistent state for PM reviews, risk committees and internal reporting.

Best-fit organisations

For active managers that need stronger internal evidence.

  • Boutique active asset managers.
  • Long-only equity funds.
  • Multi-portfolio investment boutiques.
  • UCITS or regulated-fund teams requiring stronger internal evidence.
  • Managers operating several related mandates or model portfolios.

OneBook is not initially positioned as a full replacement for enterprise accounting or complex multi-asset fund administration.

Product proof

Show the evidence, not only the promise.

OneBook portfolio state workspace
Portfolio state — positions, weights, exposures and active portfolio context.
OneBook rebalance and proposed orders
Rebalance and proposed orders — review portfolio intent before submission.
OneBook mandate controls and exceptions
Mandate controls — passes, warnings, breaches, waivers and exceptions.
OneBook benchmark-relative attribution
Benchmark-relative attribution — explain allocation and security selection.

Next step

Build an IC-ready workflow.

See how OneBook connects mandate, portfolio decision and performance.

Request Demo