Grace Holdings LLC — Behavioral Finance Technology

Company

About Grace Holdings

A Massachusetts-registered LLC building financial technology at the intersection of behavioral science and market analytics.

Entity Details

Legal Name: Grace Holdings LLC
Type: Single-Member LLC
State: Massachusetts
Confirmation: #345100323
EIN: On file with IRS
D-U-N-S: Registered with Dun & Bradstreet

Mission

To make behavioral self-awareness a core pillar of financial decision-making. We believe the greatest edge in markets is understanding yourself, and we build the technology to make that measurable, trackable, and actionable.

Core Thesis

Aggregated behavioral data from individual financial decision-makers produces leading indicators of market sentiment. Our proprietary scoring systems quantify this relationship and surface intelligence for both consumers and institutions.

Business Operations

Subscription billing processed through Stripe. Business banking through Mercury. Consumer and institutional platforms deployed and serving active users. Native iOS application currently in Apple Developer Program enrollment.

Products

Two platforms, one behavioral data engine

GraceFinance captures behavioral data from consumers. GraceIntelligence transforms it into institutional market intelligence.

CONSUMER

GraceFinance

gracefinance.co

A behavioral finance application that helps individuals understand their financial psychology through structured check-ins, AI coaching, and proprietary scoring.

Financial Confidence Score (FCS) with multi-window EMA smoothing
Behavioral Sentiment Index (BSI) for decision-pattern tracking
Grace Financial Composite Index (GFCI) population aggregation
Grace AI behavioral coaching engine
Three subscription tiers: Free, GracePro, GracePremium
PWA live, native iOS build pending App Store submission

INSTITUTIONAL

GraceIntelligence

intelligence.gracefinance.co

An institutional-grade analytics terminal that translates aggregated behavioral data into market signals, correlation analysis, and trade intelligence.

Terminal interface with real-time multi-ticker market data
GFCI-to-market correlation engine (Pearson r, lead-lag)
Probability-scored behavioral signal generation
Self-improving feedback loop against realized outcomes
Multi-source data: FRED, Yahoo Finance, Finnhub, Polygon
Backtest and validation pipeline for signal accuracy

Technology

Production infrastructure

Built on modern, scalable systems designed for reliability and real-time data processing.

Backend

FastAPI (Python) with APScheduler for automated pipelines and job orchestration.

Frontend

React/Vite for web. Capacitor for native iOS. PWA-ready across both platforms.

Database

PostgreSQL with structured schemas for behavioral, market, signal, and user data.

Hosting

Railway for backend services. Cloudflare Pages for frontend with global CDN.

Payments

Stripe for subscription management across Free, Pro ($9.99/mo), and Premium ($29.99/mo).

Data Sources

Finnhub, Alpha Vantage, Polygon, FRED, and Yahoo Finance for market and economic data.

Leadership

Founded and built by an operator

Zach LaJeunesse

Founder & CEO

Zach founded Grace Holdings out of five years of personal trading experience and a conviction that behavioral self-awareness is the most undervalued edge in financial markets. He designed and built both GraceFinance and GraceIntelligence from the ground up as a solo technical founder. Zach is currently pursuing a Finance degree at Southern New Hampshire University (GPA 3.72) and holds certifications in Bloomberg Market Concepts and Applied Marketing Strategies.

Contact

Get in touch

Company

Grace Holdings LLC

Massachusetts, United States

Email

support@gracefinance.co

Platforms

gracefinance.co intelligence.gracefinance.co