The versioned market-data lake, through an API.

Kappa gives funds and research teams programmatic, scoped access to the same versioned data layer behind TradePolaris. Discover datasets, inspect schemas, run bounded queries, and export immutable Parquet versions through revocable API keys.

Request API access →Explore the data lake

Kappa is rolling out through a private preview for funds and research teams.

200 OKapplication/json

"dataset": "us-equities-daily",
"version": 184,
"rows": 250,
"export": "short-lived parquet URL"

What you get

Scoped keys, explicit access

Curated keys see the shared catalogue; explicitly elevated keys can also reach datasets owned by the same account. Every request remains entitlement-bound.

One surface from discovery to export

List datasets, preview rows, inspect schemas, run bounded read queries, or request a short-lived URL for an immutable Parquet export.

Built for controlled fund workflows

Per-key rate budgets, usage events, hash-pinned versions, revocation, and short-lived export URLs make access measurable and operable.

Next: point-in-time as_of queries

Planned filing-time semantics will answer what Form 4, 13F, and transaction data looked like as known on a historical date — without look-ahead bias.

Dataset catalogueSchema & previewBounded SQLParquet exportCurated / owned scopesPoint-in-time as_of · planned

The workflow

Builddeclare the idea

Backtestprove it out-of-sample

Researchstress the thesis

Manage riskwatch it live

More products

Explore more

DATA

The data lake

20 years, survivorship-free.

AI RESEARCH ANALYST

Vega

An analyst that does the work — and shows it.

ASK

Ask the Data

Every market, one question away.

Bring your research stack to the lake.

Tell us what data, history, and delivery workflow you need. We are onboarding a small number of Kappa design partners.

Request API access →

Backtested / walk-forward results are hypothetical, do not represent actual trading, and are not indicative of future results.