SEC API (sec-api.io) adds Data APIs, Regulatory Filings Monitoring, Insider Data, 13D/13G, Financials, Management Compensation, IPO, and APIs & SDKs coverage that WhaleWisdom skips.
VOL. XCIV, NO. 247
★ FINANCIAL TOOLS & SERVICES DIRECTORY ★
PRICE: 5 CENTS
Monday, October 6, 2025
Head-to-head
SEC API (sec-api.io) vs WhaleWisdom comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Quick takeaways
WhaleWisdom includes Institutional Data, Investor Holdings, and Stock Ideas categories that SEC API (sec-api.io) omits.
SEC API (sec-api.io) highlights: Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings., Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN)., and Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares..
WhaleWisdom is known for: Rank hedge fund managers by performance, risk-adjusted returns, and recent filings., Pull 13F, 13D/G, insider trades, and sector exposures into custom portfolios and alerts., and API and bulk downloads available for quantitative workflows and screening..
SEC API (sec-api.io)
sec-api.io
Editor’s pick Hands-on review
A commercial API suite for SEC/EDGAR data, designed for developers, quants, and compliance teams. The free tier includes 100 calls per month. Paid tiers unlock higher rate limits, more data (5 GB vs 15 GB monthly, with $0.30/GB overage), and features such as multiple API keys or redistribution rights for enterprise users. The platform emphasizes speed, with new filings typically available in under 300 ms.
Categories
Platforms
Web
API
Pricing
Free
Subscription
Quick highlights
- Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings.
- Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN).
- Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares.
- Historical coverage back to 1993 with support for all 400+ EDGAR form types; new filings made available within ~300 ms of posting.
- Live filing feeds available in real time via WebSocket for instant integration.
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WhaleWisdom
whalewisdom.com
Aggregates 13F filings and insider transactions so investors can follow institutional positioning, build watchlists, and backtest crowding strategies.
Platforms
Web
API
Pricing
Free
Subscription
Quick highlights
- Rank hedge fund managers by performance, risk-adjusted returns, and recent filings.
- Pull 13F, 13D/G, insider trades, and sector exposures into custom portfolios and alerts.
- API and bulk downloads available for quantitative workflows and screening.
- Tools for cloning strategies, monitoring crowding, and tracking portfolio overlaps over time.
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Overlap
Shared focus areas
1 overlapBoth tools cover this research theme.
Where they differ
SEC API (sec-api.io)
Distinct strengths include:
Data APIs
Regulatory Filings Monitoring
Insider Data
13D/13G
Financials
Management Compensation
IPO
APIs & SDKs
- Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings.
- Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN).
- Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares.
- Historical coverage back to 1993 with support for all 400+ EDGAR form types; new filings made available within ~300 ms of posting.
WhaleWisdom
Distinct strengths include:
- Rank hedge fund managers by performance, risk-adjusted returns, and recent filings.
- Pull 13F, 13D/G, insider trades, and sector exposures into custom portfolios and alerts.
- API and bulk downloads available for quantitative workflows and screening.
- Tools for cloning strategies, monitoring crowding, and tracking portfolio overlaps over time.
Feature-by-feature breakdown
| Attribute | SEC API (sec-api.io) | WhaleWisdom |
|---|---|---|
Categories Which research workflows each platform targets | Shared: 13F Unique: Data APIs, Regulatory Filings Monitoring, Insider Data, 13D/13G, Financials, Management Compensation, IPO, APIs & SDKs | Shared: 13F Unique: Institutional Data, Investor Holdings, Stock Ideas |
Asset types Supported asset classes and universes | Stocks, ETFs, Mutual Funds, Funds | Stocks, ETFs |
Experience levels Who each product is built for | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Platforms Where you can access the product | Web, API | Web, API |
Pricing High-level pricing models | Free, Subscription | Free, Subscription |
Key features Core capabilities called out by each vendor | Unique
| Unique
|
Tested Verified by hands-on testing inside Find My Moat | Yes | Not yet |
Editor pick Featured inside curated shortlists | Highlighted | Standard listing |
Frequently Asked Questions
Which workflows do SEC API (sec-api.io) and WhaleWisdom both support?
Both platforms cover 13F workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do SEC API (sec-api.io) and WhaleWisdom require subscriptions?
Both SEC API (sec-api.io) and WhaleWisdom keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access SEC API (sec-api.io) and WhaleWisdom?
Both SEC API (sec-api.io) and WhaleWisdom prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.
What unique strengths set the two platforms apart?
SEC API (sec-api.io) differentiates itself with Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings., Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN)., and Datasets include executive compensation, directors and board members, audit fees, subsidiaries, and public float/outstanding shares., whereas WhaleWisdom stands out for Rank hedge fund managers by performance, risk-adjusted returns, and recent filings., Pull 13F, 13D/G, insider trades, and sector exposures into custom portfolios and alerts., and API and bulk downloads available for quantitative workflows and screening..
Keep exploring
Stay on top of related tools
Browse the categories and profiles that overlap most with this comparison to round out your shortlist.
Related categories
Follow the same themes these tools compete in.
Recommended tools
These profiles share overlapping coverage with both sides of this matchup.
- SEC EDGAR — Company Filings (Full‑Text Search & Search Filings)
Overlap: Regulatory Filings Monitoring, IPO, and Insider Data.
Regulatory Filings MonitoringIPOInsider Data - CapEdgeEditor's pickHands-on review
Overlap: Insider Data, Institutional Data, and 13D/13G.
Insider DataInstitutional Data13D/13G - GuruFocusEditor's pickHands-on review
Overlap: Stock Ideas, Investor Holdings, and Financials.
Stock IdeasInvestor HoldingsFinancials - SEC.gov (EDGAR)Editor's pickHands-on review
Overlap: Data APIs, 13F, and 13D/13G.
Data APIs13F13D/13G - Financial Modeling Prep (FMP)Editor's pickHands-on review
Overlap: Data APIs, Financials, and 13F.
Data APIsFinancials13F - Fiscal.aiEditor's pickHands-on review
Overlap: Financials, Insider Data, and Institutional Data.
FinancialsInsider DataInstitutional Data
Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.