★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool comparison edition
Tool Comparison
13F Insight vs InsideArbitrage
Pick 13F Insight instead if
13F Insight
Free • Contact for pricing · Web · API
- You'd rather start free and only pay if you outgrow it
- You want an API so you can script or automate things
Start here
InsideArbitrage
From $100/mo · Web
- Delayed quotes won't cut it; you need real-time data
- You care about calendar, corporate actions & special situations, and dividends, things 13F Insight doesn't offer
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOutbound links may include affiliate or sponsor codes.
Our take
The bottom line
13F Insight and InsideArbitrage cover a lot of the same ground (8 shared categories, including data visualizations, watchlist, and institutional ownership), so for the basics you won't go far wrong with either. InsideArbitrage simply does more: 18 categories to 13F Insight's 10, including calendar, corporate actions & special situations, and dividends. 13F Insight counters by being completely free.
What readers say
13F Insight
Vote once to reveal the community verdict.
InsideArbitrage
Vote once to reveal the community verdict.
Key differences at a glance
- Free plan
- 13F Insight
- Broader coverage
- InsideArbitrage18 vs 10 categories
- API access
- 13F Insight
- Real-time data
- InsideArbitrage
- Asset coverage
- 13F InsightAdds options and bonds
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • Contact for pricing | From $100/mo |
Free tier | Yes | No |
Free trial | — | — |
Plan limits | 3 limits: Free: watchlist items: 5, Standard: watchlist items: 20 +1 more | — |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | No |
Broker sync | — | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Retail Traders, Pro Retail +3 more | — |
Categories covered | 10 | 18 |
Regions | North America | North America |
| Data & capabilities | ||
Data quality | — | 4 signals: Latency: Real-time and End of Day, Granularity: EOD +2 more |
Capabilities | AI summaries: Filings | Universe builder |
Security | Encryption in transit | — |
| Try it | Visit 13F Insight | Visit InsideArbitrage |
Where each one shines
What 13F Insight and InsideArbitrage each do best.ShowHide
Where each one shines
What 13F Insight and InsideArbitrage each do best.What 13F Insight does best
- Tracking institutional 13F holdings, Form 4 insider transactions, and 13D/G beneficial ownership reports from one filing-focused workspace.
- Research coverage for more than 30,000 institutional filers with indexed filing history, AUM context, current holdings, and position-change views.
- The AI Agent on filer, stock, and insider pages to ask plain-English questions over real SEC filings with sourced citations.
- Views for reviewing AI-generated filing summaries, position-change analysis, and unusual-activity alerts as a starting point for research.
- Tools for building filer and stock watchlists, with free and paid tiers setting different watchlist limits.
What InsideArbitrage does best
- Tracking announced merger-arbitrage deals with spread context, calendars, deal updates, Deals in the Works, and post-mortem research.
- Tracked-deal workflows to filter relevant news, SEC filings, and tweets around the active-deal symbols a premium user follows.
- Research coverage for insider activity with Insider Weekends, cluster buys, buys near highs, flip-floppers, top-performing insiders, sector heat maps, and premium insider screens.
- Monitoring buyback situations through daily buyback announcements, searchable buyback history, Buyback Wednesdays, and Double Dipper screens that combine insider buying with repurchases.
- Monitoring spinoffs, completed spinoffs, Spinsider ideas, CVR deals, CVR outcomes, tender offers, reverse splits, activist campaigns, C-suite transitions, and M&A news feeds.
Every detail we compared
Every tracked attribute for 13F Insight and InsideArbitrage, side by side.ShowHide
Every detail we compared
Every tracked attribute for 13F Insight and InsideArbitrage, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsOptionsBonds | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Retail TradersPro RetailValue InvestorsGrowth InvestorsAnalysts | Not specified |
Regions | North America | North America |
Coverage details | Countries: USIdentifiers: Ticker, CUSIP, and CIK | Countries: USExchanges: XNYS, XNAS, and ARCXIdentifiers: Ticker and CIK |
| Data | ||
Data freshness | Not specified | Real-timeEnd of Day |
Data granularity | Not specified | EOD |
| Access & integrations | ||
Import methods | Not specified | Manual |
| Plans & trust | ||
Security & compliance | Encryption in transit | Not specified |
Capability signals | AI summaries: Filings | Universe builder |
Vendor & support | 13F InsightSupport: Email | InsideArbitrageCountry: USSupport: Email |
Curation ratings | Not specified | Methodology 3/5Reliability 3/5UX 4/5 |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Freewatchlist items: 5 | — |
| Entry paid plan | Subscription“Standard”watchlist items: 20 | $100/mo“Premium – Annual” |
| Tier 2 | Subscription“Pro”watchlist items: 100 | $150/mo“Premium – Monthly” |
| Tier 3 | — | $300/mo“IA Professional – Annual” |
| Top plan | — | $400/mo“IA Professional (4 seats)” |
| Custom / enterprise | Contact sales“Enterprise” | — |
Questions we keep getting
What's the difference between 13F Insight and InsideArbitrage?
13F Insight leans toward data visualizations, watchlist, and institutional ownership, while InsideArbitrage puts more weight on news, alerts, and calendar. They overlap in 8 categories, so for most people it comes down to workflow preference and price.
Is 13F Insight or InsideArbitrage free to use?
13F Insight has a free tier, so you can get started without paying anything. InsideArbitrage is paid-only. If budget matters, start with 13F Insight and see how far it takes you before opening your wallet.
Does 13F Insight or InsideArbitrage have an API?
13F Insight has an API for programmatic access and custom integrations. InsideArbitrage doesn't, so you're working through its interface.
Should I choose 13F Insight or InsideArbitrage?
It depends on what you're after. Pick 13F Insight if AI research and education matter to you; go with InsideArbitrage if you'd rather have calendar and corporate actions & special situations. And if you only need the basics both share, let price decide.
What asset classes do 13F Insight and InsideArbitrage cover?
Both cover stocks and ETFs. 13F Insight also handles options and bonds.
Does 13F Insight or InsideArbitrage have real-time data?
InsideArbitrage offers real-time data, which matters if you trade actively. 13F Insight runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Which has a better stock screener: 13F Insight or InsideArbitrage?
InsideArbitrage has a stock screener for surfacing ideas; 13F Insight doesn't, and focuses its energy elsewhere.
Can I track my portfolio with 13F Insight or InsideArbitrage?
InsideArbitrage handles portfolio tracking. 13F Insight is really a research tool; you'd track your portfolio elsewhere.
Keep researching
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Feedback
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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.