Modular Integration Beats Hosted Platforms

This reveals that the bottleneck in wirehouse alternatives is not investor demand, it is fitting private market workflows into each bank’s own operating system. iCapital built real value by taking over feeder fund administration and post trade work, but the biggest banks still want their own branding, approval paths, document rules, and internal controls. That makes a hosted full service model labor heavy, while a bank embedded modular model fits how wirehouses already run.

• Wirehouses were the core volume engine, accounting for more than 80 to 85 percent of platform business in one former product leader’s account. Those firms often required all logic, emails, and client facing flows to run through their own sites, which made standard self service software hard to deploy out of the box.
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• A lot of the pain sits after subscription. Every fund can have different NAV files, tax providers, payout schedules, and reconciliation rules. iCapital built structured data, fee logic, and exception handling to manage this, but teams were still comparing outputs against fund administrators and fixing mismatches manually.
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• The market is already moving toward a more modular model. CAIS launched an enterprise product for TAMPs in February 2025, and iCapital has been buying reporting and data assets like Mirador and Citi Wealth’s feeder platform. The pattern is clear, platforms win by plugging into existing bank and advisor stacks, not replacing them wholesale.
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The next phase is a shift from feeder fund administrator to infrastructure layer. As registered funds, direct subscriptions, and enterprise contracts grow, the winning platform will be the one that lets banks keep their own workflows while standardizing data, reporting, and money movement underneath. That is where margins improve and where wirehouse share is likely to consolidate.