QuantConnect Fundamental Data Alternative: A Standalone, EDGAR-Sourced Option

If you're searching for a "QuantConnect fundamental data alternative," you're probably in one of two situations: you want fundamentals outside the QuantConnect (QC) ecosystem — a different backtester, live trading stack, or spreadsheet — or you want to understand exactly what's under the hood of QC's point-in-time (PIT) data before you commit your research to it.

This page is written for the second group too, honestly. QuantConnect's fundamental data (Morningstar-sourced, PIT-aware, integrated into LEAN) is, by all public accounts, a legitimate, well-built product. We're not claiming to replace it. We're offering a narrower, cheaper, standalone alternative: a JSON API of point-in-time US equity fundamentals sourced directly from SEC EDGAR, usable in any language or platform, with a free sample you can verify yourself before paying anything.

What QuantConnect actually offers

According to QuantConnect's own public documentation, it bundles fundamental data (via Morningstar) directly into its LEAN backtesting engine and cloud research environment. The data is described as point-in-time aware, meaning it's designed to avoid feeding your backtest information before it was actually available — the same core problem we care about. QC also advertises a free research tier, deep integration with its own backtester, options and equities data, universe selection tooling, and an existing user base with community strategies and support.

If you're already building inside QuantConnect's ecosystem, this integration is a genuine advantage: fundamentals, price data, universe selection, and execution all live in one place, one API, one mental model. That's not something we're offering. For their exact pricing and current data tiers, see their pricing page directly (quantconnect.com/pricing) — we won't quote numbers we can't verify in real time.

What Tradevo Data offers instead

Tradevo Data is a much smaller, much narrower tool: 5,189 US companies, 312,751 point-in-time rows, 7 core concepts (Revenue, NetIncome, Assets, StockholdersEquity, OperatingCashFlow, EPSDiluted, DilutedShares), up to 12 fiscal years, annual only — sourced from 10-K and 10-K/A filings on SEC EDGAR, which is public domain data.

Every row carries first_filed (the date the value became public), original_value (the first-reported, PIT-safe figure), latest_value (the current revision), a restated flag, and qa_status. We've labeled 18,723 restatements across the dataset — cases where a company's own later filing changed a prior figure by more than 0.5% on the same tag. That's the mechanism that actually addresses lookahead bias: your backtest sees what was knowable on a given date, not what we now know in hindsight. This is a data-quality mechanism, not a performance claim — nothing here predicts or promises returns, and none of this is investment advice.

Access is one JSON endpoint — /v1/fundamentals?ticker&as_of[&concept] — with server-side as_of filtering (first_filed <= as_of, same-day inclusive), 5,000 requests/day, and an instant API key after Stripe checkout. The $49/month plan also includes full bulk access: /v1/download (the entire dataset as one gzipped CSV) and /v1/snapshot?as_of (a whole-universe cross-section at any date) — no extra bulk tier, no upsell. Parquet output is on our roadmap, not yet shipped. Quarterly data is also roadmap only; today this is annual (10-K + 10-K/A) coverage.

Because it's a plain JSON API, it works from Python, R, Julia, a spreadsheet macro, or QuantConnect's own custom data importer if you want to mix sources. That portability — not raw coverage or platform depth — is the actual point of difference.

Fair comparison

We're not the only budget-friendly PIT option either — Sharadar, Tiingo, and QuantConnect itself are all credible choices depending on what you need. This is a comparison, not a claim of exclusivity.

When QuantConnect is the better choice

Be honest with yourself here:

• You're building and running strategies inside LEAN already. Native integration beats stitching together an external API, every time.
• You need more than 7 fundamental concepts, or need data QC gets from Morningstar that isn't in SEC filings (segment data, certain ratios, analyst estimates).
• You want quarterly fundamentals now, not on a roadmap. QC's data tier may already have this; ours doesn't yet.
• You want one vendor, one bill, one support channel for data, execution, and backtesting.
• You need non-US coverage. We're US-only; check QC's coverage docs for international equities.

If any of those are true, QuantConnect is very likely the right tool, and we'd rather tell you that than pretend otherwise.

When to build it yourself instead of paying either of us

There's also a legitimate third option: parse SEC EDGAR's XBRL filings yourself. It's free, it's public domain, and if you only need a handful of tickers or one specific concept for a one-off study, writing a scraper might genuinely be less work than evaluating a vendor. The tradeoffs: you'll spend real time handling amendments, tag inconsistencies across filers, and restatement logic correctly — which is exactly the work the 18,723 labeled restatements in our dataset represent. For a handful of companies, DIY is often fine. For 5,189 companies across up to 12 years, most people find it's not worth their time. You can judge that yourself — our methodology and a working sample are public on GitHub, so you can see precisely what the DIY version would need to replicate.

Try the sample before you decide anything

Don't take our word for the methodology. The free sample — 40 companies, 3,280 rows, the same first_filed / original_value / restated fields as the full dataset — is on GitHub with no signup: github.com/christianpichichero-max/pit-fundamentals. On that 40-company sample's reliable-filing rows only, measured lookahead was a mean of 43.4 days (max 61 days observed). That figure describes this specific sample only — we do not claim it for the full 312,751-row dataset.

If the methodology holds up, the full API is $49/month at https://tradevodata.com/?utm_content=alt-quantconnect-data — 5,000 requests/day, instant key via Stripe, cancel anytime, docs at /docs. For more on why point-in-time handling matters at all, see /blog/lookahead-bias-fundamental-backtests and /blog/point-in-time-fundamentals-data.

Nothing on this page is investment advice. Verify QuantConnect's current pricing and data tiers on their own pricing page before comparing costs, and do your own due diligence before relying on any fundamentals data in a trading decision.