Middle office outsourcing for investment firms
Define daily processing, reconciliation, reporting handoffs, exception owners, and the work your firm retains.
Review the requirements
CSSI BackOffice
Outsourced back-office operations for RIAs and investment firms.
Keep reconciliation, account processing, and reporting moving when your team is stretched. CSSI supports a defined task or a recurring workflow in your portfolio systems, with clear responsibilities for the work we handle and the reviews your team retains.
- Daily reconciliation and processing
- Performance, composites, and GIPS support
- Client reporting and invoicing operations
- Partnership accounting support
Customer story
More account-processing capacity without adding headcount.
One existing customer expanded its CSSI relationship to include new-account processing. CSSI reviewed the process, timing, and expectations before taking on the work. The published story describes supporting that customer’s growth without increasing its headcount.
Read the client storyHow the work moves
From custodian data to delivered reports
- 01
Custodian data
Daily files and feeds arrive
- 02
Reconciliation
Positions, cash, and transactions checked
- 03
Exceptions
Breaks researched and resolved
- 04
Reporting
Reports and packages prepared
Plan the work
Choose the workflow your firm needs to improve
Use a requirements checklist and a representative example to prepare for a defined CSSI project.
Service overview
Operations experience backed by technical expertise
Help with the recurring work and the systems behind it.
With experience across Advent Axys and APX, Black Diamond, PortfolioCenter, Tamarac, Orion, and more, CSSI can provide temporary, specialized, or permanent support without forcing your team into a new operating model.
Our BackOffice team supports your recurring process. When an import, report, or repetitive step needs improvement, CSSI’s consulting practice can help with interfaces, report development, and automation. We agree on any technical work as part of the engagement scope.
Explore RIA back-office outsourcing for reconciliation and reportingChoose the coverage
Cover a process or add capacity to your team
CSSI can take on a defined recurring workflow or supplement the people already doing the work. Start with the task that needs coverage; reporting, consulting, and other services can be combined when the scope calls for them.
Recurring operations
Define the daily or periodic tasks CSSI will perform: account reconciliation, statement processing, price and index updates, or report preparation. Agree on the inputs, deadlines, and exception handoffs.
Additional staff capacity
Add support for a staffing gap, a growing workload, or a specialist task while your team retains its agreed responsibilities and approvals.
For work performed remotely in your systems, agree on access permissions, review authority, and any required data transfers before the handoff. Your operating procedures and data-control requirements are part of the service scope.
Operational coverage
Bring us the work that is creating pressure
Start with one recurring process, a specialist gap, or a broader operating partnership. The scope can expand or contract with the workload.
Daily operations
Performance
Client delivery
Fund operations
Partnership Accounting
Ongoing fund accounting, statements of capital, K-1 preparation, and audit assistance.
Questions before you scope it?
See how transitions, pricing, security, and coverage work.
Daily operations
Daily reconciliation and processing
Our standard client procedure covers the recurring work required to keep portfolio data accurate, current, and ready for the next reporting cycle.
Data Management
- Download and translate data
- Set up accounts and securities
- Correct and post activity
- Reconcile accounts
- Update prices, securities, and indexes
Corporate Actions
- Process splits, spinoffs, and mergers
- Handle dividends, interest, and paydowns
- Manage dividend reclassification
- Process step-ups
- Review wash sales
Reconciliation
- Process trade confirms and affirms
- Reconcile market value
- Reconcile cost basis
- Reconcile paper statements
- Automate repeatable work with macros, scripts, and programs
CSSI reconciliation services
T+1 processing and notification services
A partially automated end-of-day workflow that combines repeatable processing with human review. For many firms, the daily process takes about one hour outside normal business hours.
- Prepare and send notifications on the next business day after the transaction or data pull
- Automate repetitive data aggregation, formatting, and scheduling where possible
- Review output, handle exceptions, and approve final delivery when needed
- Support timely delivery while preserving room for manual adjustments
- Run the workflow outside regular business hours to protect the team's working day
Performance & GIPS
Performance and composite maintenance
Maintain accurate performance reporting and support compliance work through structured validation, outlier review, and composite maintenance.
Data Validation & Performance
- Validate system data with proprietary tools
- Update performance using the firm's procedures
- Research and troubleshoot performance outliers
- Communicate required corrections
Composites & GIPS
- Maintain membership based on firm policies
- Assist with GIPS compliance standards
- Work directly with the client or verifier
- Keep required deliverables on schedule
Client servicing
Client and reporting services
Support the processes surrounding the client relationship, from opening an account through reporting and invoicing.
New Account Setup
Process paperwork, set up accounts in portfolio systems, manage client information and transfers, and update entities, groups, and composites.
Data Audit
Act as an independent reviewer, confirm that no irregularities exist, and address issues that could compromise data integrity.
Month-end Reporting
Run, review, troubleshoot, and save internal and client reports while automating repeatable parts of the process.
Client Invoicing
Run part or all of the invoicing process using your firm's defined procedures for accurate and timely billing.
Fund accounting
Partnership accounting
Ongoing support for the monthly, annual, and investor-facing processes around partnership accounting.
Monthly services
- Reconcile Axys or APX to Advent Partner and custodial statements
- Maintain fund accounting within Advent Partner
- Maintain fund data in QuickBooks
Client services assistance
- Prepare wire letters
- Prepare and distribute monthly statements of capital from Advent Partner
Annual services
Bring Advent Partner fund information into Advent Partner Tax Forms
Prepare K-1s using Advent Partner Tax Forms
Assist with annual audits
Support
Frequently asked questions
Common questions about service coverage, transitions, pricing, operating hours, and data security.
What are the benefits of outsourcing our BackOffice operations to CSSI?+
Firms usually come to us for steadier deliverables, deeper operational expertise, and a more cost-effective support model. Our BackOffice outsourcing helps reduce operational risk while improving day-to-day efficiency.
When should I consider outsourcing our BackOffice operations?+
If your firm is dealing with staff turnover, contact us early. CSSI often steps in when team members retire or leave, helping firms cover operational gaps and maintain continuity without disrupting clients.
What is the typical cost involved in outsourcing our BackOffice work to CSSI?+
BackOffice processes vary by firm, so pricing depends on the complexity of your workflow. Even with custom pricing, CSSI aims to keep rates competitive by using years of experience and internal tools to work efficiently.
How long does it take to transition our BackOffice operations to CSSI?+
Timelines vary, but a typical transition takes one to two weeks. It can move faster when there is a dedicated point of contact, current documentation, and scheduled training with your operations team.
Does CSSI handle complex, time-sensitive BackOffice tasks?+
CSSI can tailor BackOffice services to fit your process, including more complex or time-sensitive work.
What are CSSI's BackOffice service hours?+
We align our schedule with NYSE market hours and holidays. Our BackOffice team typically works from 7:00 AM to 4:00 PM EST so market-related tasks can be handled on time.
Will client data be stored on CSSI's network?+
No. CSSI performs operations remotely on your system, so client data does not need to live on our network. If a project ever requires data transfer, it only happens with formal authorization.
Common service paths
Which back-office service does your team need?
Using Advent APX or Axys? Explore our APX and Axys back-office services for support in your existing environment.
BackOffice services
Every BackOffice workflow we support
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Your next operating move
Need help with reconciliation or back-office workload?
Tell us which process needs support, the system it runs in, and the next deadline. We’ll discuss the workload, review steps, and a practical starting scope.
