A TAMP (Turnkey Asset Management Platform) provides outsourced investment management, model portfolios, trading, and reporting — allowing advisory firms to delegate portfolio construction and focus on client relationships. TAMPs have evolved from simple model delivery into full technology ecosystems. The question for most firms is no longer just "which TAMP?" but "how does my TAMP data connect to everything else?"
What to Evaluate in a TAMP
Selecting a TAMP involves more than comparing investment menus and fee schedules. The operational and technology implications of TAMP selection affect how your firm runs its advisory practice, how data flows across your stack, and how your clients experience their investment reporting. The criteria below represent the evaluation dimensions that matter most for RIAs in 2026.
Investment breadth
Does the TAMP offer the model portfolio spectrum your clients need — including UMAs, direct indexing, alternatives, and multi-manager options?
Technology integration
Does the TAMP connect cleanly to your CRM, custodians, and planning tools — or does it create a data silo that requires manual reconciliation?
Fee transparency and total cost
What is the all-in cost to the client? Investment management fee, platform fee, and underlying fund expenses should all be accounted for.
Data portability and ownership
If you change TAMPs, does your data come with you? Who owns the data model, and what access do you have to raw performance and holdings data?
Trading and rebalancing sophistication
How does the platform handle tax-loss harvesting, drift management, household rebalancing, and transition management from a prior custodian or manager?
Transition and onboarding support
What does the TAMP provide when onboarding new clients or transitioning assets from a prior manager? Transition support quality varies significantly.
The Leading TAMP Platforms
The TAMP market is concentrated, with a handful of large platforms accounting for the majority of AUM. Each has distinct strengths that make them more or less suitable depending on a firm's client profile, technology stack, and operational model. The profiles below reflect the platforms as they stand in 2026.
TAMP Platform Comparison
The table below compares leading TAMP platforms on the dimensions most relevant to RIA evaluation in 2026. The final row reflects how Milemarker can sit alongside any TAMP, connecting TAMP data with the rest of a firm's technology stack.
| Platform | AUM Scale | Investment Options | Technology Integration | Data Portability | AI / Analytics |
|---|---|---|---|---|---|
| Envestnet | PMC | ~$4.7T platform assets | UMAs, direct indexing, alts, third-party strategists | Strong within Envestnet ecosystem; gaps outside it | Within Envestnet infrastructure | Envestnet data network; ecosystem analytics |
| Orion Portfolio Solutions | Large; combined with Orion platform | Behavioral models, custom indexing, multi-manager | Deep with Orion core; limited for non-Orion tools | Within Orion infrastructure | Denali AI; Orion-ecosystem scope |
| AssetMark | ~$115B AUM | Third-party strategist breadth; balanced range | Limited outside AssetMark ecosystem | Within AssetMark infrastructure | Basic analytics; consultative focus |
| SEI | Enterprise scale | Institutional investment management | Compliance-first; complex for independent RIAs | Within SEI infrastructure | Institutional-grade; bank/trust channel focus |
| Adhesion Wealth | Growing; UMA specialist | UMA overlay, tax management, multi-manager | Multi-custodian flexibility; narrow platform scope | Within Adhesion infrastructure | Overlay analytics; no full-stack analytics |
| Your firm + Milemarker | Works with any TAMP | Connect any TAMP's investment data | 130+ integrations: TAMP, CRM, custodians, planning | Your own Snowflake warehouse | AI across your full stack — not TAMP-siloed |
Milemarker does not replace any TAMP. It connects TAMP data alongside every other system in a firm's stack — giving firms unified analytics and AI capabilities that no single TAMP's native tools can deliver on their own.
The Missing Layer: Your Data Strategy
Every TAMP keeps data within its own ecosystem. Envestnet analytics reflect Envestnet data. Orion Portfolio Solutions analytics reflect Orion data. AssetMark's reporting reflects AssetMark's data model. This is not a flaw — it's the natural architecture of closed platforms optimized for their own workflow. But it creates a structural problem for firms that run a TAMP alongside Salesforce, multiple custodians, eMoney, and other tools: the TAMP's analytics reflect only a portion of the firm's picture.
Firms using a TAMP alongside Salesforce for CRM, Schwab or Fidelity as custodians, and financial planning tools face the same challenge regardless of which TAMP they choose: TAMP analytics reflect TAMP data, not the whole firm. Answering questions like "which clients have growing held-away assets relative to their plan?" or "which households are underserved relative to their revenue contribution?" requires connecting data that no single TAMP controls.
Milemarker connects TAMP data alongside 130+ other integrations in a Snowflake warehouse the firm owns. TAMP portfolio data flows in alongside Salesforce CRM data, custodian feeds, financial planning projections, and operational data — normalized against a wealth management-specific data model so your analytics team can answer questions that span every system.
Milemarker works with any TAMP. Whether your firm uses Envestnet, Orion Portfolio Solutions, AssetMark, or SEI, Milemarker connects the TAMP's data alongside every other system in your stack — without disrupting the TAMP relationship or requiring any changes to your investment management workflow.