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AI Expert-Call Surveillance for MNPI Detection

Encore Compliance sharpened its detection of material non-public information in expert-network call transcripts with an interpretable LLM system, work that helped support its acquisition by ACA Group.

~75%

Cut from expert lookup time

2–4 months

Implementation Time

Not disclosed

Project Cost
the challenge

Encore needed to detect nuanced Material Non-Public Information (MNPI) disclosures in expert-network call transcripts, but existing approaches lacked the interpretability required for compliance audits and the reliability demanded under regulatory scrutiny.

what they built

PressW refined an LLM architecture combining structured prompt engineering for compliance-risk detection, chain-of-thought reasoning for transparent decisions, and rigorous testing frameworks benchmarked against compliance standards.

The build paired structured prompts for risk identification with step-by-step chain-of-thought reasoning, strategic model selection to balance performance and efficiency, and robust testing protocols benchmarked to compliance standards.

best fit for

Compliance firms, expert-network platforms, and regulated financial-services organizations that need reliable, auditable MNPI detection across large volumes of call transcripts.

Ai ROLE
AI does first-pass MNPI detection, with interpretability as the design priority
infrastructure
  • Expert-network call transcripts (source corpus)
  • Encore's existing surveillance platform (deployment target)
  • Compliance-standard benchmark set used for testing
  • Audit trail capturing the reasoning behind each flag
integration points
  • Call transcript ingest into structured risk-identification prompts
  • Chain-of-thought reasoning output producing an interpretable flag with rationale attached
  • Model selection layer balancing performance against processing efficiency
  • Benchmark testing harness scoring detection against compliance standards
impact

Higher MNPI Detection Accuracy

The refined system materially improved accuracy in detecting potential MNPI disclosures (no percentage disclosed).

Audit-Ready, Explainable Decisions

Chain-of-thought reasoning makes each flag interpretable for compliance audits.

Supported Acquisition by ACA Group

The platform contributed to Encore Compliance being acquired by ACA Group.
implementation complexity

The design priority was interpretability rather than raw detection. Chain-of-thought reasoning renders each flag in language a compliance reviewer can read at a glance and defend under audit. Built correctly, that explainability layer costs nothing in accuracy or latency.

Bryson Greenwood

Founder & Head of AI
Encore Compliance
Founder and Head of AI at PressW, an AI consultancy in Austin. Ten-plus years building production AI, from custom NLP and computer vision to LLM retrieval pipelines.
GEt an intro
industry
Financial Services
Legal & Compliance
business organization
Legal & Compliance
AI TYpe
Natural Language Processing
Decision Support & Scoring
value type
Risk & Compliance
frequently asked questions
How can AI detect material non-public information in expert network calls?

Encore Compliance uses an LLM system with structured prompts that identify compliance risk in call transcripts, paired with chain-of-thought reasoning so each flag carries its rationale. That interpretability is what makes the flags usable in a compliance audit, and detection accuracy improved materially after the refinement.

What AI approach was used for MNPI surveillance?

Structured prompt engineering for compliance-risk detection, chain-of-thought reasoning for transparent decisions, strategic model selection balancing performance against efficiency, and testing protocols benchmarked to compliance standards. The specific models are not disclosed.

What results did Encore Compliance achieve?

Detection accuracy for potential MNPI disclosures improved materially, though no percentage was disclosed. Chain-of-thought reasoning made every flag interpretable for compliance audits, and the platform contributed to Encore Compliance being acquired by ACA Group.

How long did the MNPI detection work take?

PressW reports meaningful results within weeks. The engagement refined an existing architecture through structured prompt design, chain-of-thought reasoning, model selection and benchmark testing.

Who is this MNPI detection approach best for?

Compliance firms, expert-network platforms, and regulated financial-services organizations that need reliable, auditable MNPI detection across large volumes of call transcripts.

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