A LabelNest Sentinel briefing

Two portfolios worth watching. One place that actually watches them.

Sentinel is a risk-monitoring platform built around two real portfolios funds and companies now carry side by side: a book of private-market investments, and a growing stack of AI systems making real decisions inside the business. Both get watched with the same rigor. Neither gets a guess.

See how it works
5
Sentinel Risk engines, one per portfolio company
7+1
Sentinel AI engines plus one composite score
4
Report formats, written from real scores
1
Workspace, walled off per organisation
The problem

Both sides of the portfolio go quiet between check-ins, right when it matters most.

A fund finds out a portfolio company is struggling when the founder finally calls, weeks after hiring froze and a co-founder quietly left. A company finds out its AI vendor changed model behind the scenes when a customer complains, not when it happened. Both are the same failure: risk that was visible in the underlying signals long before anyone was looking at it directly.

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Concentration nobody added up. Half the book quietly ends up in one sector, one stage, one geography, without anyone deciding that on purpose.
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Valuations that drift from reality. A GP-reported NAV can sit unchallenged for quarters with no independent check against stage and illiquidity.
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AI systems nobody is scoring. A model making credit or fraud decisions is deployed the same way a chatbot is, with no separate accounting for how much more it can cost you if it's wrong.
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Reports built from memory. The quarterly LP letter and the board risk memo get written from whoever remembers what happened, not from a number that was tracked the whole time.
How it works

Two engines, one radar. Both feed the same reports and the same alerts.

Sentinel Risk scores every private-market holding across five engines. Sentinel AI scores every deployed AI system across seven, then blends them into one composite. Neither product needs the other, but both land in the same place: a dashboard, a set of alerts, and a report that writes itself from real numbers.

How Sentinel Risk and Sentinel AI both feed the Sentinel workspace Five Sentinel Risk engines and seven Sentinel AI engines plus a composite score both flow into a central Sentinel hub, which outputs reports, alerts, and a digest ๐Ÿ›ก๏ธ Sentinel CRE LERE OTRM PSTE VIE SENTINEL RISK HAL RCR MDR DSR CPR TCR WAR SENTINEL AI + COMPOSITE Reports ยท Alerts ยท Weekly digest
Sentinel Risk

Five engines, one per way a private portfolio actually goes wrong.

Built for GPs, LPs, and family offices holding a book of private companies and funds. Every engine runs against the portfolio companies already on file, not a spreadsheet you have to keep uploading.

CRE

Concentration Risk Engine

Adds up the whole book by sector, stage, geography, cheque size, and co-investor, and flags where the fund has more riding on one bucket than anyone decided on purpose.

LERE

Liquidity & Exit Risk Engine

Looks at every position's vintage, cheque size, ownership, and reported NAV against how much has actually been deployed, and surfaces which holdings are furthest from a realistic path to an exit.

OTRM

Operational & Team Risk Monitor

Reads hiring patterns and key-person departures the way an experienced operator would, weighing how likely each signal is to mean a company is healthy, plateauing, or in real distress, calibrated against real 2022–2024 startup outcomes.

PSTE

Portfolio Stress Testing Engine

Runs the whole book through named scenarios, a 300 basis-point rate shock, a 2022-style credit contraction, an AI-driven SaaS multiple collapse, each with its own sector-by-sector haircuts, so a fund can see its downside before it happens instead of after.

VIE

Valuation Integrity Engine

Checks a GP-reported valuation against an independent illiquidity discount for that company's stage, from roughly a quarter off at seed down to nothing once a company is public, so a NAV that's drifted from reality gets caught instead of carried forward.

Sentinel AI

Seven engines, one composite score, for every AI system actually running in the business.

Built for CTOs, CROs, and compliance teams who need to know which of the AI systems they've deployed carries real exposure, not just which ones exist. Each system on file gets scored on all seven engines, then blended into one number leadership can actually act on.

HAL · 20%

Hallucination Risk

Weighs the underlying model's real, measured hallucination rate against how sensitive the use case is, a credit-scoring or fraud-detection system carries far more exposure per hallucination than an internal chatbot.

RCR · 18%

Regulatory Compliance Risk

Classifies each system the way the EU AI Act would, high-risk, limited-risk, or minimal-risk, by what it's actually used for, and estimates the real penalty exposure that classification carries.

MDR · 15%

Model Dependency Risk

Tracks how exposed a system is to its own provider, factoring in that provider's financial stability and its track record of deprecating models out from under the people building on them.

DSR · 15%

Data & Security Risk

Rates prompt-injection exposure by what the system actually does, an autonomous agent acting on its own carries critical exposure; a low-sensitivity scoring model carries very little.

CPR · 12%

Cost Prediction Risk

Projects real monthly spend from the model's own per-token cost and the system's actual daily user band, so a usage spike shows up as a cost risk before the invoice does.

TCR · 10%

Talent Concentration Risk

Flags systems built on custom or fine-tuned models, or run on self-hosted infrastructure, where the real risk is how few people actually understand how the thing works.

WAR · 10%

Wrong-Use & Automation Risk

Weighs how much of the decision is actually automated against how reversible a wrong decision is, a fully-automated, irreversible call carries far more exposure than one a human reviews first.

Composite

One blended score

All seven engines roll into a single weighted score per AI system, so leadership gets one number to track per system, not seven to reconcile.

Reports & alerts

The report writes itself, from the same numbers on the dashboard.

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Four report formats, one real data source

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LP quarterly letter.
Written in a direct, institutional tone with no marketing language, states the risks plainly because it's going to the people whose capital is on the line.
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Investment committee memo.
Built for the room deciding what to do next, not the room being reassured.
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Board pack.
The risk section of a board deck, ready without anyone assembling it by hand the night before.
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Risk summary.
A shorter standalone version for whoever just needs the current picture, not the full narrative.

Every report pulls straight from the latest computed scores, concentration, exit risk, stress results, and valuation checks, so what's written matches what the dashboard already shows. Nothing is drafted from memory.

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Live alerts

Risk conditions that cross a threshold raise an alert immediately, and every alert stays open on the dashboard until someone on the team actually dismisses it.

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Weekly digest

An admin can send the whole team a real digest email in one click: the current concentration and valuation-integrity scores plus the three most pressing open alerts, no dashboard login required to stay informed.

Who it's for

One workspace, walled off cleanly per organisation and per person.

Every organisation on Sentinel is its own fully separate workspace. Nothing crosses between tenants, and access inside each one is scoped by role.

Super Admin & Admin
Full access across every module, invite and manage the rest of the team, and trigger the weekly digest.
Analyst
Runs the engines, reviews scores, and generates reports, the working seat for whoever owns risk day to day.
Viewer
Read-only access to dashboards and reports, for stakeholders who need visibility without editing rights.
LP portal
A dedicated view for limited partners showing their own fund relationships and vintage-year concentration, without the working analyst tools.

Both books, actually watched.

A private-market portfolio and an AI system stack fail for different reasons, but both fail quietly. Sentinel is built so neither one does.