FinTech // Client Project

Portfolio Management:
18% More Tax Value Captured.

We built a practical FinTech solution combining live market data, automated portfolio rebalancing, and traceable compliance records. The project delivered 18% Tax Value Lift and 99.9% Drift Accuracy.

Key Results RESULTS
18%
Tax value Lift
↑ ROI Verified
99.9%
Drift Accuracy
Continuous
50ms
Execution Response time
Fast Response

Trusted by teams building ambitious products

What We Set Out to Improve.

Industry
FinTech

high-net-worth (high-net-worth) asset management platform requiring continuous, non-custodial portfolio oversight.

How We Worked
Dedicated product team

AI Architect + Quant Engineer + DevSecOps Lead embedded within the Investment Strategy unit.

Goal
Day-to-day Automation & Capital Efficiency

Transitioning from batch-based rebalancing to automated, signal-driven asset optimization.

What We Built
AI system

A practical solution designed around the client’s existing tools, teams, and day-to-day workflow.

What Was Getting in the Way.

The client relied on older End-of-Day batch processing to identify portfolio drift. During periods of high market volatility, portfolios remained outside of target allocation for up to 18 hours, resulting in tracking error and missed tax-optimization windows.

The biggest issues were tracking error, tax inefficiency, and growth limit. The team needed a faster, clearer way to manage the work while keeping the right checks in place.

Tracking Error
Reactive rebalancing led to 1.2% annual slippage relative to benchmark targets.
Tax Inefficiency
Tax-loss harvesting was only performed quarterly, missing intraday volatility opportunities to offset gains.
Growth Limit
The system could not handle the compute load of live monitoring for the expanding high-net-worth client base.
The Solution

What We Built.

01
Live Market Data
Introduced a fast live data system to process live pricing and volatility signals, triggering automated services based on specific drift thresholds.
Key details
Type Live Updates
Throughput 1M+ Signals/sec
Response time <10ms
02
Automated Portfolio Rebalancing
Individual AI assistants assigned to each portfolio, capable of calculating optimal trade-lots to minimize wash-sale violations and maximize tax value.
Key details
Engine AI Assisted
Optimizer Convex Solver
Deployment Ready to Grow
03
Traceable Compliance Records
Every automated trade is saved with a snapshot of market conditions and the decision rules used to satisfy SEC/FINRA audit requirements.
Key details
Trail Traceable Data
Explainability Logic Versioning
Compliance Secure by Design
Before and After

How the Workflow Improved.

Area
Before
After
Optimization

End-of-Day Batch

Portfolios were drift-corrected once per 24 hours, leading to intraday variance.

Continuous Platform

Agents monitor drift in live use use use use use use, executing corrections within moments of a threshold breach.

Tax Strategy

Manual / Quarterly

Tax-loss harvesting was a manual administrative task performed 4 times a year.

Automated Harvesting

Agents continuously harvest losses at the optimal moment, maximizing the tax-shield for high-net-worth clients.

Throughput

Linear Response Time

System slowed down as the number of clients grew, increasing rebalancing delay.

Parallel Scaling

Cloud-based nodes spin up dynamically to handle market surges across millions of portfolios.

Key Features

What Made the Solution Useful.

Fast Response

Direct Execution Platform

Direct integration with custodian APIs using pre-warmed connections to eliminate execution lag during volatile windows.

Business impact
Sub-50ms Execution
Traceable Data

Consistent Controls

Automated decisions are traceable back to the exact market signal, ensuring 100% clear regulatory evidence.

Business impact
Zero Audit Findings
AI Assisted

Tax Value Workflow

The AI calculates complex wash-sale scenarios across multi-custodial accounts to ensure no tax credits are invalidated.

Business impact
18% Tax value Lift
Faster Delivery

How We Reduced Build Time.

Tested foundations helped the team spend less time on setup and more time on the parts that made this product useful.

What accelerated the work

4 reusable building blocks
01

AI-powered Control Module

A tested starting point for ai-powered control module reduced repeated setup work.

02

Tax Value Execution Module

Reusable work for tax value execution module let the team focus more time on the client’s specific needs.

03

Market Monitoring Platform

This made it easier to add market monitoring platform without rebuilding common foundations.

04

FinOps Safety controls

A tested starting point for finops safety controls reduced repeated setup work.

Results

The Business Difference.

A straightforward before-and-after view of what changed for the team and their customers.

RESULT: CAPITAL EFFICIENCY01

Tax Value Generation

Automated harvesting captured intraday volatility opportunities that were previously missed by batch systems.

Manual SystemBaseline
AI-powered Platform18% Higher
Outcome18% Tax Value Increase
RESULT: Accuracy02

Portfolio Drift Reduction

Continuous monitoring reduced the time portfolios spent outside of target allocation by 92%.

Before18 Hours
After< 5 Mins
Outcome92% Less Rebalancing Lag
RESULT: RELIABILITY03

Execution Response Time (p95)

Automatic workflow ensures trades are placed before market conditions shift against the client.

Target< 100ms
Coretus50ms
Outcome50ms p95 Execution
Results18% Tax Value Increase • 92% Less Rebalancing Lag
Trust and Control

How We Kept It Safe and Reliable.

01
Model Transparency
AI-powered logic is version-controlled and consistently reproducible for regulatory review.
COMPLIANCE READY
02
Data Isolation
Multi-tenant encryption ensures high-net-worth client data is isolated at the processing system.
SOC2 COMPLIANT
03
Fail-Safe Execution
Automatic safeguards automatically pause agents during sudden market events.
SRE VERIFIED
04
Code and IP Ownership
Coretus transfers 100% IP ownership of all AI-powered logic and investment automation components to the client.
100% OWNED
Client Testimonial

In their own words.

Coretus transformed our platform from a management tool into a mathematical engine . Our agents harvest losses 24/7 with a level of accuracy that humans simply can't match. We’ve effectively eliminated the rebalancing lag for our entire client base.

Turn Management into Mathematical Automation.

Have a similar challenge? We can help you plan and build a practical FinTech solution around your goals, budget, and existing systems.

SOC2 & Regulatory Ready

Sub-50ms p95 Execution

100% IP & Model Ownership