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arXiv cs.AI
5/10

TradeTrace

A "decision replay" app for retail investors using AI robo-advisors — it shows you exactly why your AI picked each holding, what news triggered a rebalance, and how it would have done if you'd held cash.

Target user

Self-directed investors using AI investing apps like Magnifi, Q.ai, or brokerage robo-tools who want to understand — and audit — the reasoning behind the recommendations

Features
  • Plain-English breakdown of every AI recommendation's reasoning chain, news inputs, and risk scores
  • Side-by-side comparison of multiple AI advisors running on the same starting capital and constraints
  • Stress-test simulator that asks "what changes if rates rise 2%, oil drops 15%, or your top holding misses earnings"
  • Shareable decision-log archive you can send to your CPA, spouse, or financial planner for a second opinion
Why now

Retail adoption of AI investing tools is surging while regulators are pushing explainability rules, and the paper shows investors currently see terminal returns but not the intermediate analyst judgments — exactly the gap a replay tool would close for end users.

Signals · overall 5/10
Demand
5/10

Academic studies (ScienceDirect, IEEE) confirm retail users find robo-advisors 'not transparent and incomprehensible' and demand explainability, but Magnifi reviews flag inconsistent AI responses rather than audit demand, and SEC withdrew its 2022/2023 AI disclosure proposals in 2025 weakening the urgency narrative.Not transparent and incomprehensible: A qualitative user study of an AI robo-advisorMagnifi Review 2026: Is It Worth It?

Whitespace
8/10

Search for 'portfolio explainer' / 'decision replay' / 'trade journal AI' returned zero direct consumer products; explainable robo-advisor (XRA) work remains academic (CEUR, IEEE), not commercialized as a standalone retail audit tool.Explainable Robo-Advisors: Empirical Investigations to Specify and Design XRABringing Explainability to Robo-Advisors: A Hybrid AI-Finance Decision System

Monetization
4/10

Retail investors are notoriously reluctant to pay subscription fees; Magnifi's 7-day free trial and freemium positioning indicates conversion difficulty, and the platforms themselves (Magnifi, Q.ai) are the more natural monetization layer than a third-party audit overlay.Magnifi Review 2026: Honest VerdictMagnifi Review: The Best Personal Finance AI?

Longevity
6/10

Broader AI explainability trend is durable, but the specific regulatory tailwind cited in the thesis has weakened: SEC's 2022/2023 AI disclosure rules were withdrawn in 2025, tempering forced adoption pressure on retail platforms.SEC Investor Advisory Committee Recommendation on AI (Nov 2025)SEC Artificial Intelligence for Asset Managers Presentation

Feasibility
3/10

Core feasibility blocker: Magnifi, Q.ai, Betterment, and Wealthfront do not publicly expose the reasoning logs of their portfolio agents, so the app would have to reconstruct 'why' from public news, prices, and filings rather than true ground truth — making the 'replay' a heuristic interpretation rather than an audit.NextFund: A Unified Performance Tracking Platform for Agentic Portfolio ManagementMagnifi Review - Is This AI Brokerage Worth Using?

NextFund: A Unified Performance Tracking Platform for Agentic Portfolio ManagementarXiv cs.AI · 2026-07-14 (11d ago)