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Form4API vs EODHD
Updated 2026-07-12. By Theodor Nielsen, founder of Form4API. Pricing and features checked July 2026 from EODHD's public pricing and docs pages.
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EODHD is a broad market-data platform where insider transactions are a minor, Form-4-only feature: daily-batch refresh, gated behind the $59.99/mo Fundamentals tier, and charged at 10x the normal quota per call. Form4API is a dedicated insider-data API: real-time (measured p50 ~59s on /status), covering Form 4, Form 144, and 13F-HR, with webhooks. EODHD is the better pick if you already need broad market data and insider trades are a nice-to-have — see when EODHD wins below.
Real-time (~59s measured) vs daily batch
EODHD refreshes its Insider Transactions API on a daily batch — by its own description, filings "typically appear on the same or next day." That is fine for retrospective research, but it rules out any workflow that reacts to a filing the moment it happens: alerting, trade automation, or same-day analysis.
Form4API ingests from SEC EDGAR's real-time getcurrent feed and publishes the resulting latency — not as a one-time claim, but as a rolling measurement anyone can check on /status: p50 ~59 seconds, p95 ~92 seconds over a recent 7-day window (July 2026). New transactions also fire an HMAC-signed webhook on paid plans, so you don't need to poll for the batch to land.
Dedicated insider-data depth vs a bolt-on endpoint
EODHD's Insider Transactions API covers Form 4 only, with no mention of Form 3, Form 5, Form 144, or 13F in that product. It is one endpoint among a large general market-data catalogue — end-of-day prices, intraday prices, fundamentals, options, macro data — rather than a specialized offering.
Form4API covers Form 4, Form 144 (forward-looking sell intent), and 13F-HR (institutional holdings) together, joins them to ticker/CIK/CUSIP, handles Form 4/A amendment supersession so corrected filings aren't double-counted, flags Rule 10b5-1 pre-scheduled trades, and exposes post-trade returns as queryable filter parameters — depth that comes from insider data being the whole product, not an add-on.
The quota math
EODHD's free tier ($0) doesn't include insider data at all. Accessing it requires the Fundamentals Data Feed at $59.99/mo ($599.90/yr), or the $99.99/mo all-in-one bundle. On top of that entry price, each insider-transactions request costs 10x the standard quota — so the tier's advertised 100,000 calls/day effectively caps insider-specific usage at 10,000 requests/day.
Form4API's free tier is 500 calls/day at no cost, and Pro at $49/mo is the paid entry point for real-time webhooks — a lower floor for anyone whose primary need is insider data specifically, without paying for a broad market-data bundle to unlock it.
When EODHD is the better choice
To be fair to EODHD: it is fundamentally a broad market-data platform, and a strong one. Reach for it over Form4API if:
- You need one vendor for prices, fundamentals, and insider data. If your product already requires EOD/intraday prices and fundamentals, the $59.99/mo Fundamentals tier can be cheaper than paying separately for a market-data provider plus a dedicated insider API — provided insider data is a secondary feature, not the core one.
- Same-day freshness is acceptable. Research and backtesting workflows that don't need same-minute data are unaffected by the daily-batch refresh.
- You want a documented, public uptime SLA. EODHD publishes a status page and a stated "99.9% API Uptime" claim, a trust signal worth weighing alongside Form4API's own status page.
For any workflow where freshness, form-type breadth (144, 13F), or amendment handling matters, the daily batch and Form-4-only scope are the disqualifying gap.
Side-by-side
| Dimension | Form4API | EODHD |
|---|---|---|
| Insider data placement | Core product | One endpoint inside the $59.99/mo Fundamentals tier (or $99.99/mo all-in-one) |
| Quota cost per call | Standard rate limit | 10x quota — an insider-transactions call costs 10 calls against the daily cap |
| Refresh frequency | Real-time — measured p50 ~59s / p95 ~92s on /status (rolling 7d, July 2026) | Daily batch — filings "typically appear on the same or next day" |
| Real-time delivery | HMAC-signed webhooks on paid plans | None for insider data (WebSocket exists for price data only) |
| Form coverage | Form 4 + Form 144 + 13F-HR | Form 4 only |
| History depth | 3+ years, consistent | Uneven — 5–11 years for large caps, ~12 months for newer names (self-acknowledged gap, targeting uniform coverage by mid-2026) |
| Entry price for insider data | Free tier, then $49/mo (Pro) | Free tier excludes insider data; $59.99/mo minimum |
| Broader market data (prices, fundamentals) | Not offered | Yes — EOD/intraday prices, fundamentals, options, macro |
Sourced from EODHD's public pricing and docs pages as of July 2026; verify current terms before deciding.
Frequently asked questions
Does EODHD have real-time insider trading data?
No. EODHD refreshes its Insider Transactions API on a daily batch, with new filings typically appearing the same day or the next day, by its own description. There is no webhook or push option for insider data (its WebSocket streaming product is for real-time price data, not insider transactions). If same-day or better latency matters, that is a structural gap versus Form4API, which measures and publishes p50 ~59 second latency on its status page.
How much does EODHD insider data cost?
EODHD’s Insider Transactions API is not available on its free or lower-priced EOD/Intraday tiers — it requires the Fundamentals Data Feed at $59.99/mo (or the $99.99/mo all-in-one bundle). On top of that, each insider-transactions API request costs 10x the normal quota, so even the advertised 100,000 calls/day tier effectively caps insider-specific usage at 10,000 requests/day.
Does EODHD cover Form 144 or 13F filings?
Not in its insider-data product. EODHD’s Insider Transactions API covers Form 4 only. Form4API additionally covers Form 144 (notice of proposed sale, a forward-looking signal) and 13F-HR (institutional holdings), both on its Business plan.
When is EODHD a better choice than Form4API?
When insider data is a secondary need rather than the primary one. If you already need end-of-day and intraday prices, fundamentals, and broader market data for a product, and insider trades are just one more data point layered on top, EODHD’s bundle can be more cost-effective than paying separately for a dedicated insider API plus a market-data provider. For anyone whose core need is timely, complete insider data, the daily-batch refresh and Form-4-only scope are limiting.