VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
InsideArbitrage vs MarketScreener
Pick InsideArbitrage if
InsideArbitrage
Free • From $100/mo · Web
- You want corporate actions & special situations, dividends, and splits.
Pick MarketScreener if
MarketScreener
Free • From $34/mo · Web · Mobile
- You want the cheaper way in: plans start at $34/mo instead of $100/mo
- You do a lot of your research from your phone
- You want stock ideas, financials, and ESG ratings.
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
InsideArbitrage and MarketScreener cover a lot of the same ground (10 shared categories, including news, alerts, and calendar), so for the basics you won't go far wrong with either. InsideArbitrage includes corporate actions & special situations and dividends, and MarketScreener includes stock ideas and financials.
What readers say
InsideArbitrage
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MarketScreener
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Key differences at a glance
- Cheaper paid plan
- MarketScreener$34/mo vs $100/mo
- Mobile app
- MarketScreener
- Asset coverage
- MarketScreenerAdds commodities and currencies
- Free plan
- Both
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 • From $100/mo | Free • From $34/mo |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | — | 6 limits: Access: annual equivalent monthly usd: 28, Access: annual billing usd: 336 +4 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | Yes |
API access | No | No |
Broker sync | No | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | Retail Traders, Pro Retail +4 more |
Categories covered | 17 | 16 |
Regions | — | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data partners | — | 3 partners: FactSet, Morningstar +1 more |
Capabilities | Universe builder | Universe builder |
| Try it | Visit InsideArbitrage | Visit MarketScreener |
Where each one shines
What InsideArbitrage and MarketScreener each do best.ShowHide
Where each one shines
What InsideArbitrage and MarketScreener each do best.What InsideArbitrage does best
- Track announced mergers, spreads, calendars, deal updates and potential deals.
- Filter news, SEC filings and social posts for premium tracked-deal symbols.
- Research insider activity through transaction pages, weekly articles, cluster-buy screens and insider rankings.
- Follow buybacks, spinoffs, CVRs, tender offers, reverse splits, activist campaigns and management changes.
- Use 13F, 13D, 13G and Form 4 data for institutional and insider ownership context.
What MarketScreener does best
- Monitor market news and quotes across equities, ETFs, commodities, currencies, forex, and cryptocurrencies.
- Build watchlists with quotes, news, earnings releases, valuation trends, broker recommendations, and email alerts.
- Screening for stocks globally with hundreds of fundamental and technical criteria, with higher filter counts reserved for Premium and Expert tiers.
- Use dynamic charts with technical indicators and switch between stocks and personal lists.
- Explore thematic lists and compare them with index trends and past performance.
Every detail we compared
Every tracked attribute for InsideArbitrage and MarketScreener, side by side.ShowHide
Every detail we compared
Every tracked attribute for InsideArbitrage and MarketScreener, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksETFsCommoditiesCurrenciesCryptos |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Not specified | Retail TradersPro RetailLong-term InvestorsValue InvestorsGrowth InvestorsDividend Investors |
Regions | Not specified | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker and CIK | Identifiers: Ticker and ISIN |
| Data | ||
Data partners | Not specified | FactSetMorningstarS&P Global Market Intelligence |
| Plans & trust | ||
Capability signals | Universe builder | Universe builder |
Vendor & support | InsideArbitrageSupport: Email | Surperformance SASCountry: France |
Curation ratings | Methodology 3/5Reliability 3/5UX 4/5 | Not specified |
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 | Free“Public Articles and Data” | Free“Free Member” |
| Entry paid plan | $100/mo“Premium - Annual” | $34/mo“Access”annual equivalent monthly usd: 28 · annual billing usd: 336 |
| Tier 2 | $150/mo“Premium - Monthly” | $59/mo“Premium”annual billing usd: 600 · annual equivalent monthly usd: 50 |
| Top plan | — | $279/mo“Expert”annual billing usd: 2,628 · annual equivalent monthly usd: 219 |
Questions we keep getting
What's the difference between InsideArbitrage and MarketScreener?
InsideArbitrage leans toward news, alerts, and calendar, while MarketScreener puts more weight on news, alerts, and calendar. They overlap in 10 categories, so for most people it comes down to workflow preference and price.
How much do InsideArbitrage and MarketScreener cost?
Good news: both InsideArbitrage and MarketScreener have free plans, so you can run them side by side and only pay if you hit a wall.
Can I use InsideArbitrage or MarketScreener on my phone?
MarketScreener lists a dedicated mobile app, so it travels better. InsideArbitrage doesn't list a dedicated mobile app; its documented access is web.
Should I choose InsideArbitrage or MarketScreener?
It depends on what you're after. Pick InsideArbitrage if corporate actions & special situations and dividends matter to you; go with MarketScreener if you'd rather have stock ideas and financials. And if you only need the basics both share, let price decide.
What asset classes do InsideArbitrage and MarketScreener cover?
Both cover stocks and ETFs. MarketScreener adds commodities, currencies, and cryptos on top.
Which has a better stock screener: InsideArbitrage or MarketScreener?
Both InsideArbitrage and MarketScreener include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with InsideArbitrage or MarketScreener?
Yes, both do portfolio tracking: holdings, performance, and allocation in one place.
Keep researching
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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.