Financial data management for funds and banks

Financial data that knows what it is, and when.

Masseef is one system for your securities, prices, curves, config, trades, positions and risk data. Every record is typed as what it is, and every value is kept with when it applied and when it was known.

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  • One system for the whole data estate
  • New structures the same day
  • Every version kept
TRS 4471 · AS OF 14 JUN 2024 as known 14 Junas known today
  1. TRS 4471 on a basketTotalReturnSwap
  2. Return leg on the basketReturnLeg
  3. Basket of 3 convertiblesBasket
  4. Convertible B 2030ConvertibleBondConversion ratio 24.10 → 24.60
  5. Equity BEquity
  6. Funding leg, SOFR + 50bpFundingLeg
Restated 18 Jun. The earlier 24.10 is kept as its own fact.As known on 14 Jun, the graph reads 24.10, exactly as it did then.
A swap on a basket of convertibles, booked the same day. Illustrative

What sets it apart

Four things, built in from the start.

Any structure, the same day

Baskets, swaps on baskets, structured notes and fund-of-funds compose from instruments you already hold. No schema project, no vendor release.

Data model

Data that knows what it is

A convertible is a convertible, with its own fields and real links to its issuer and underlying, checked when it is written.

Data model

Every version, on every date

The whole object graph, readable as of any date and as known on any date. Corrections never overwrite.

As of any date

Fast live, full history

Current state is kept materialized, so the live book reads at full speed. Any past date is assembled on demand.

Platform

One system

One system for the whole data estate.

Reference data, market data, configuration, trades and positions, and the risk data computed from them, live in one system, so nothing has to be reconciled between systems that should have agreed in the first place.

Reference and master data Security master IBOR: positions and transactions Corporate actions Market data and time series Index and benchmark Fund and fund-of-funds data Data quality and matching Configuration Risk data Data for OMS, PMS and compliance Integrations

Yours to run, and yours to leave.

Single-tenant Two-person approval Standard SQL access Raw data kept, export any time
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AI

AI-ready data, and agents you can govern.

Masseef's data already says what it is, when it was known and where it came from, so an AI agent can use it without a guide. Over MCP, agents work the exception queue, dry-run config changes and answer audit questions with proof. A person approves any change to a value.

How AI works with Masseef

Built for

Built for firms that live in their data.

Hedge funds

New structures the same day, config in seconds, and backtests on data as it was known.

For hedge funds

Asset managers and allocators

One record across funds, mandates and holdings, with look-through to every underlying.

For asset managers

Banks

Risk data you reproduce from what was recorded on the day, not reconstruct from archives.

For banks

Who built it

Built by people who used the data every day.

Masseef's team has spent more than twenty years building trading, pricing and risk systems at a major US bank and a hedge fund, working in the data every day beside traders, quants, analysts and risk managers. Masseef is the system they always asked for.

Read the story

Show us a structure your system can't book.

A nested product, a correction you need explained, a date you need to reproduce. We'll show you how Masseef handles it, on a running system.

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