Investment account aggregation brings balances, holdings, transactions, and portfolio information from different financial institutions into a common view. Wealth managers use it to report on held-away assets, while consumer apps apply it to portfolio tracking and financial planning. The technology behind these products ranges from ready-made connectivity APIs to custom application development. Data coverage, refresh frequency, and the handling of customer permission are important considerations for each approach.
1. Itexus
Itexus develops custom financial software for banks, investment firms, wealth managers, and fintech businesses. Its work includes investor portals, wealth management applications, and systems that collect account and portfolio information from multiple financial sources. These projects bring brokerage or custodian data into a consolidated interface where investors and advisers can review assets and performance.
Its financial technology services extend to API integration, reporting interfaces, security-conscious application development, and modernization of existing platforms. A published wealth management case study covers automated aggregation of financial data for private investors. Itexus is therefore relevant to firms that need a tailored application built around specific financial institutions and existing business workflows, instead of an off-the-shelf aggregation dashboard.
Key Facts
- Best for: Custom investor portals and wealth management software
- Core services: Investment account aggregation services, financial application development, data aggregation integrations, API development
- Specialization: Investment and banking technology
- Engagement model: Custom software projects
- Headquarters: Dover, DE, USA
- Founded: 2013
- Team size: 150+ engineers
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901
- Facebook: www.facebook.com/itexus
- Instagram: www.instagram.com/itexus.soft
- LinkedIn: www.linkedin.com/company/itexus-fintech-software
- Twitter: x.com/ItexusSoft
2. Akoya
Akoya runs a network for consumer-permissioned financial data sharing, where financial institutions and fintechs connect through a single integration instead of building separate links. Its API products include Accounts & Investments, and wealth management and investing is one of the fintech use cases it lists. Akoya reports more than 4,500 connected financial institutions and over 7,500 apps powered.
Akoya suits fintechs and aggregators that want API-based access to investment account data from large US institutions.
Key Facts
- Best for: API access to US institutions' investment account data
- Core services: Data access network, accounts and investments API, data recipient hub
- Specialization: Consumer-permissioned financial data sharing
- Headquarters: Boston, MA, USA
- Founded: 2020
- Team size: 51–200 employees
Contact Information
- Website: akoya.com
3. Vezgo
Vezgo offers an API for aggregating crypto investments, connecting users' accounts on more than 40 exchanges, 30 blockchains and 500 wallets. A Connect Flow widget handles account linking, and the API returns balances, positions and transaction history as normalized data, with USD values, token data, staking and reward data, liquidity pools and NFT metadata.
Use cases listed on its site include portfolio trackers, tax and accounting, KYC/AML compliance, lending and digital asset auditing. Named customers include Wealthica and Assetdash, with published case studies for Merlin and SoftLedger. Vezgo provides a sandbox and a Node.js SDK. It suits wealth and portfolio apps that need crypto holdings next to traditional accounts.
Key Facts
- Best for: Adding crypto holdings to portfolio and wealth apps
- Core services: Crypto data API, NFT API, connect widget, real-time updates
- Specialization: Exchange and wallet account aggregation
- Headquarters: Toronto, Canada
- Team size: 11–50 employees
Contact Information
- Website: vezgo.com
- LinkedIn: www.linkedin.com/company/vezgo
4. Plaid
Plaid provides financial connectivity infrastructure used by consumer apps and fintech developers. Its Investments product retrieves investment account information, including holdings, securities, and transactions, from supported financial institutions. Developers can use these feeds to build consolidated portfolio views without maintaining every individual institution connection themselves.
Plaid also supplies account-linking tools and financial data products outside investing, making it useful for applications that combine investment tracking with cash management or broader personal finance features. Its API approach is particularly relevant when a product team has its own user experience and analytics but needs standardized access to customer-permissioned financial records. Coverage and available fields depend on the institution and the connected account.
Key Facts
- Best for: Investment account data APIs for fintech apps
- Core services: Account connectivity, holdings data, investment transactions
- Specialization: Consumer-permissioned financial data
- Engagement model: Developer API
- Headquarters: San Francisco, CA, USA
- Founded: 2013
- Team size: 1,001–5,000 employees
Contact Information
- Website: plaid.com
- LinkedIn: www.linkedin.com/company/plaid-
- Instagram: www.instagram.com/plaid
- Twitter: x.com/plaid
5. OSKI Solutions
OSKI Solutions builds custom software and integrates business systems for companies working with complex application environments. Its published work on financial API integration addresses how banks and financial businesses exchange information between platforms. That integration experience is relevant to investment account aggregation projects that must coordinate feeds from financial institutions with internal applications.
The company works with Microsoft-based development technologies and custom application architecture, allowing it to contribute the application and middleware layers surrounding an aggregation service. These layers may include authenticated data exchange, the consolidation of records for reporting, and connections to existing workflows. For buyers designing an investment platform around their own requirements, OSKI represents a custom engineering approach rather than a packaged consumer aggregation product.
Key Facts
- Best for: Custom financial API integration and middleware
- Core services: Software engineering, system integration, API development
- Specialization: Microsoft technology stack and custom platforms
- Project type: Business-specific data integration
- Headquarters: Tallinn, Estonia
- Team size: 51–200 employees
Contact Information
- Website: oski.site
- Email: etis.ikso@tcatnoc
- LinkedIn: www.linkedin.com/company/oski-solutions
6. Morningstar ByAllAccounts
Morningstar ByAllAccounts focuses on collecting investor account data for wealth management and advisory workflows. Its aggregation services bring together account details from custodians and financial institutions, supporting consolidated positions, performance reporting, and other portfolio analysis tasks. Morningstar provides developer documentation for integrating its aggregation services into external systems.
The offering is especially relevant to financial advisers, portfolio reporting vendors, and wealth platforms that require investment-specific holdings and transactions rather than only basic banking balances. Aggregated data can support a unified view of assets held away from a firm's primary custodian. Buyers should evaluate institution coverage, account refresh behavior, and the downstream data formats needed by their portfolio management or reporting software.
Key Facts
- Best for: Advisor and wealth platform investment aggregation
- Core services: Investment data aggregation, account and holdings feeds
- Specialization: Custodial and held-away account data
- Engagement model: Enterprise data integration and APIs
- Founded: 1999
- Team size: 51–200 employees
Contact Information
- Website: www.morningstar.com
- Email: moc.ratsgninrom@ofnitcudorp
- Phone: +1 312 696-6000
- Address: 22 West Washington Street Chicago, IL 60602 United States
- LinkedIn: www.linkedin.com/company/morningstar
- Instagram: www.instagram.com/morningstarinc
- Facebook: www.facebook.com/MorningstarInc
- Twitter: x.com/MorningstarInc
7. A-listware
A-listware supplies software engineering and development teams for businesses in finance and other technology-intensive sectors. Its finance industry services cover banking applications, financial platforms, and investment-related software, along with integration and analytics capabilities. Those capabilities support projects where external account data must be connected to a proprietary customer experience.
The company is relevant to an investment aggregation initiative when the buyer needs developers to implement interfaces, business logic, dashboards, or connectors around selected data providers. An account aggregation product may combine multiple technologies, so the quality of the custom application and its maintenance plan are significant parts of the work. A-listware's role fits that engineering and ongoing delivery requirement rather than the sale of a standalone investment data feed.
Key Facts
- Best for: Development teams for finance applications
- Core services: Software development, team augmentation, integrations
- Industries: Finance and banking
- Project type: Custom platforms and financial software
- Headquarters: London, UK
Contact Information
- Website: a-listware.com
- Email: moc.erawtsil-a@ofni
- Phone: +44 (0)142 439 01 40
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
8. Fiserv
Fiserv offers AllData Aggregation, a consumer-permissioned financial data service that covers banking, credit, investment, retirement, and other account categories. The company's AllData PFM offering also supports consolidated views of internal and external accounts, including investment tracking. Financial institutions and fintech businesses can integrate these tools into their own customer-facing products.
An official Fiserv case study describes how Interactive Brokers used AllData Aggregation to let customers view accounts held at other financial institutions alongside their brokerage information. That is a concrete example of account aggregation serving portfolio analysis rather than only expense tracking. Fiserv is a relevant option for larger financial platforms seeking broad account coverage and an established aggregation API.
Key Facts
- Best for: Financial institutions consolidating investment and banking data
- Core services: AllData Aggregation, AllData PFM, account data APIs
- Specialization: Multiple financial account categories
- Engagement model: Enterprise financial technology
- Headquarters: Milwaukee, WI, USA
- Founded: 1984
- Team size: 10,001+ employees
Contact Information
- Website: www.fiserv.com
- Phone: 800-872-7882
- Address: 600 N. Vel R. Phillips Ave. Milwaukee, WI 53203
- LinkedIn: www.linkedin.com/company/fiserv
- Instagram: www.instagram.com/fiserv
- Facebook: www.facebook.com/Fiserv
- Twitter: x.com/fiserv
9. Yodlee
Yodlee supplies financial data aggregation infrastructure used in account-linked applications. Its developer documentation covers account aggregation APIs with access to investment information such as accounts, holdings, and transactions. The service is useful where developers want normalized records from participating financial institutions without building separate connections for each source.
For investment apps, Yodlee can help power a unified account view or supply data for personal finance and wealth reporting. Its coverage across account types also supports products where investment balances need to sit next to banking or liability information. Product teams should pay particular attention to permitted use, freshness, account linking, and which fields individual institutions make available in the markets they plan to serve.
Key Facts
- Best for: Financial account aggregation APIs
- Core services: Account linking, financial data feeds, investment holdings
- Specialization: Multi-institution financial data
- Engagement model: API infrastructure
- Headquarters: Raleigh, NC, USA
- Founded: 1999
- Team size: 1,001–5,000 employees
Contact Information
- Website: www.yodlee.com
10. MX
MX is a financial data platform offering account connectivity, transaction enrichment, and data-driven money management capabilities. Its aggregation services include external financial information and investment account data, helping financial institutions show a broader view of a customer's finances within their digital experiences.
Because MX operates across financial categories, it is relevant to banks and fintech firms that want to combine investment activity with everyday spending and balances in a unified application. Its offering also extends beyond basic connection management into transaction categorization and financial insights. For projects primarily concerned with securities-level portfolio reporting, prospective buyers should check the precise investment fields and supported institutional connections before settling on a data configuration.
Key Facts
- Best for: Banks and fintechs building unified financial views
- Core services: Data connectivity, account aggregation, data enrichment
- Specialization: Consumer financial data experiences
- Engagement model: Financial data platform
- Headquarters: Lehi, UT, USA
- Founded: 2010
- Team size: 501–1,000 employees
Contact Information
- Website: www.mx.com
- Phone: (801) 669-5500
- Address: 3401 N Thanksgiving Way #500 Lehi, UT 84043
- LinkedIn: www.linkedin.com/company/mxenabled
- Twitter: x.com/mx
11. Addepar
Addepar provides investment management and reporting software for institutions, advisers, and other wealth professionals. Its platform consolidates complex financial information so users can analyze portfolios across accounts, custodians, and asset classes. Published case studies describe firms bringing information from many accounts and custodial relationships into a central reporting environment.
Its main strength for investment aggregation is the downstream portfolio intelligence: combining the underlying records with performance, exposure, and client reporting workflows. The platform is consequently more relevant to professional investment operations than to a simple consumer account-linking feature. Buyers working with alternatives, private assets, or complicated ownership structures may find its portfolio data model especially pertinent to their reporting needs.
Key Facts
- Best for: Institutional and professional portfolio consolidation
- Core services: Investment data aggregation, analytics, performance reporting
- Specialization: Complex multi-account portfolios
- Engagement model: Wealth management platform
- Headquarters: New York, NY, USA
- Founded: 2009
- Team size: 1,001–5,000 employees
Contact Information
- Website: addepar.com
- Email: moc.rapedda@gnitekram
- Address: 335 Madison Ave, 25th floor New York, NY 10017 United States
- LinkedIn: www.linkedin.com/company/addepar
- Twitter: x.com/addepar
12. Mastercard Open Banking (Finicity)
Mastercard's open banking services, supported by Finicity technology, let consumers share permissioned financial information with eligible applications. Its connectivity is used in personal financial management, lending, and financial data products. Mastercard has described applications that consolidate bank accounts alongside stock portfolios and retirement information into a single consumer dashboard.
The offering is relevant to developers building financial overview experiences where investments are viewed in the context of broader household accounts. It combines permissioned account access with infrastructure developed for financial institutions and fintech users. The precise investment account types and data fields available to an application require product-level confirmation, since open banking access is not identical across institutions or jurisdictions.
Key Facts
- Best for: Permissioned financial account connectivity
- Core services: Open banking data access, account linking, aggregation
- Specialization: Multi-account consumer financial information
- Brand: Mastercard services delivered through Finicity
- Headquarters: Salt Lake City, UT, USA
- Founded: 2000
Contact Information
- Website: www.mastercard.com
- Phone: 1-800-627-8372
- LinkedIn: www.linkedin.com/company/mastercard
- Instagram: www.instagram.com/mastercard
- Twitter: x.com/mastercardnews
13. Interactive Brokers
Interactive Brokers offers PortfolioAnalyst, a tool for consolidated portfolio reporting and investment performance analysis. The brokerage has used Fiserv's AllData Aggregation to help clients bring accounts maintained at other firms into a broader financial picture. This supports a single view of holdings and performance beyond one brokerage relationship.
As with Fidelity Full View, PortfolioAnalyst is principally a customer-oriented investment reporting service, not an independent financial-data network offered as a standalone API to developers. It is relevant to investors who need cross-account visibility alongside brokerage activity, allocation analysis, and performance views. Users should verify supported outside accounts and any account-linking requirements before relying on the consolidated results for ongoing reporting.
Key Facts
- Best for: Investors using cross-institution portfolio reporting
- Core services: PortfolioAnalyst, account consolidation, performance reporting
- Specialization: Brokerage and held-away asset views
- Engagement model: Brokerage-linked portfolio analysis
- Headquarters: Greenwich, CT, USA
- Founded: 1977
- Team size: 1,001–5,000 employees
Contact Information
- Website: www.interactivebrokers.com
- Address: One Pickwick Plaza, Greenwich, CT 06830 USA
- LinkedIn: www.linkedin.com/company/interactive-brokers
- Instagram: www.instagram.com/interactivebrokers
- Facebook: www.facebook.com/InteractiveBrokers
- Twitter: x.com/ibkr
Comparison Table
| Company | Best for | Headquarters | Founded | Team size |
| Itexus | Custom investor portals and wealth management software | Dover, DE, USA | 2013 | 150+ engineers |
| Akoya | API access to US institutions' investment account data | Boston, MA, USA | 2020 | 51–200 employees |
| Vezgo | Adding crypto holdings to portfolio and wealth apps | Toronto, Canada | — | 11–50 employees |
| Plaid | Investment account data APIs for fintech apps | San Francisco, CA, USA | 2013 | 1,001–5,000 employees |
| OSKI Solutions | Custom financial API integration and middleware | Tallinn, Estonia | — | 51–200 employees |
| Morningstar ByAllAccounts | Advisor and wealth platform investment aggregation | — | 1999 | 51–200 employees |
| A-listware | Development teams for finance applications | London, UK | — | — |
| Fiserv | Financial institutions consolidating investment and banking data | Milwaukee, WI, USA | 1984 | 10,001+ employees |
| Yodlee | Financial account aggregation APIs | Raleigh, NC, USA | 1999 | 1,001–5,000 employees |
| MX | Banks and fintechs building unified financial views | Lehi, UT, USA | 2010 | 501–1,000 employees |
| Addepar | Institutional and professional portfolio consolidation | New York, NY, USA | 2009 | 1,001–5,000 employees |
| Mastercard Open Banking (Finicity) | Permissioned financial account connectivity | Salt Lake City, UT, USA | 2000 | — |
| Interactive Brokers | Investors using cross-institution portfolio reporting | Greenwich, CT, USA | 1977 | 1,001–5,000 employees |
How to Choose an Investment Account Aggregation Provider
Your choice depends on who uses the data. Advisors reporting on held-away assets need accurate positions and cost basis, while consumer apps need broad coverage and a smooth connection flow. Some teams need a connectivity API, others need a developer to build the portal around it. These checks help you test providers against your actual accounts.
Coverage of your clients' institutions. Give each provider a list of the custodians, brokerages, retirement plans and other platforms your clients actually use, and ask which are covered and by what method. Direct custodial feeds and official APIs are usually more reliable than screen scraping. Coverage claims in the thousands mean little if your top ten institutions are weak.
Holdings and transaction data quality. Balances alone are not enough for portfolio reporting. Check whether the provider returns positions, security identifiers, cost basis, lot detail, dividends and corporate actions. Ask how they handle missing tickers, options and alternative assets. Test with real accounts and reconcile the results against custodian statements before you commit.
Refresh frequency and connection stability. Ask how often data refreshes, whether updates are pushed or pulled, and what share of connections typically break and need the user to reconnect. Frequent multi-factor prompts and broken links frustrate users and leave reports stale. Request status monitoring, error codes your app can act on, and clear handling of re-authentication.
Consent and data security. Confirm that the provider uses tokenized, permissioned access rather than storing user credentials, and that customers can revoke access easily. Ask for security certifications such as SOC 2, encryption details and data retention terms. Check how the service fits open finance rules and data-sharing agreements in your markets, since these are changing in several regions.
Normalization and reconciliation. Different institutions describe the same security and transaction types differently. Ask how the provider normalizes asset classes, transaction codes and account types, and whether you can see raw data when something looks wrong. For advisor reporting, ask about reconciliation tools and how corrections are handled when a custodian restates history.
Integration effort and ownership. Review the API documentation, SDKs, sandbox data and webhook support. Estimate how much work remains to build dashboards, performance calculations and alerts on top. If you hire a development partner, confirm they have shipped an aggregation integration before and that you will own the code, data model and provider contracts.
Conclusion
Investment account aggregation has become an important layer of digital wealth management because investors increasingly hold assets at several institutions. The challenge extends beyond connecting accounts: financial information must be reconciled, refreshed, presented clearly, and protected through suitable consent processes. API providers supply access to underlying records, while wealth platforms turn those records into portfolio reporting and custom software teams build specialized experiences around them. Different use cases also call for different depths of data, from summary balances to security-level holdings, transactions, and performance calculations. A practical selection process begins with the institution coverage and output fields the intended users actually need, then tests reliability against real account types.
Frequently Asked Questions
What is investment account aggregation?
It is the process of collecting balances, holdings and transactions from accounts at different financial institutions into one view. Advisors use it to include held-away assets in reports and planning, and consumer apps use it for portfolio tracking. Data usually comes through custodial feeds, institution APIs or, less reliably, credential-based screen scraping.
Is account aggregation safe for investors?
It can be, when the provider uses permissioned, tokenized connections, encrypts data and lets users revoke access. The main risks come from credential sharing and broad data retention. Ask providers whether they store credentials, how they secure tokens, what certifications they hold and how quickly they remove data after a user disconnects.
Should we use an aggregation API or build our own connections?
Most companies use an aggregation API, because maintaining connections to hundreds of institutions takes ongoing work. Building direct integrations makes sense only for a small set of key custodians where you need detailed data or special terms. A common approach is to combine an API with custom development for the portal, analytics and reporting layers.
How much does investment account aggregation cost?
Aggregation APIs are usually priced per connected account, per user or per API call, often with minimum monthly commitments. Advisor-focused platforms may charge per account or per assets under administration. Main cost drivers are the number of accounts, refresh frequency, the depth of holdings data needed and any custom development for the user-facing product.
How long does it take to launch an aggregation feature?
A basic integration with an aggregation API can often be built in a few weeks. A complete product with portfolio views, performance reporting, reconciliation and error handling typically takes a few months. Timelines grow with the number of providers, data normalization needs, security reviews and compliance approvals required in your market.