VOL. XCIV, NO. 247

Free Alternatives to InsideArbitrage

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Free replacement verdicts

Free Alternatives to InsideArbitrage

Zero-cost replacements grouped by fit, tradeoffs, pricing friction, and platform access. Use this list to test InsideArbitrage before paying for another subscription.

Switching from InsideArbitrage doesn't have to cost a thing. We've curated 5 free-tier alternatives that cover similar workflows, from Calendar to Corporate Actions & Special Situations and beyond. Each pick below is framed by fit, caveats, and access friction so you can trial replacements without opening your wallet.

Visit InsideArbitrage All alternatives Tool details

Disclosure: outbound links may include affiliate or sponsor links

Which Alternative Should You Use?

Special Situations Digest

Closest replacement

Best for: Portfolio managers, analysts, family offices, and independent investors seeking special situations across more than 25 markets.

Special Situations Digest best matches the base workflow on stock research, market monitoring, and investment news.
Special Situations Digest also has a free plan, so you can try it without paying. Free-plan limits: Signup required. Free readers get the first 10 situations in each issue and access to the free archive.

Watch for: Triage, not diligence: The product is for idea generation and triage. Users still need to verify filings, valuation, legal terms, liquidity, timing, and downside risk.

Compare digest plans

Details Compare

OpenInsider

Quality-checked pick

Best for: Investors who want a free Form 4 transaction screen before paying for an insider-data service.

OpenInsider best matches the base workflow on stock research, market monitoring, and insider and institutional tracking.
OpenInsider also has a free plan, so you can try it without paying. Free-plan limits: Open access site with no public paid plan found.

Watch for: U.S. SEC scope: Coverage centers on SEC Form 4 insider filings and does not solve global director-dealing coverage.

Screen insider trades

Details Compare

Stock Spinoff Investing

Strong runner-up

Best for: Special-situations investors focused on spin-offs looking for calendars, writeups, monthly recommendations, updates, Q&A, and community discussion.

Stock Spinoff Investing best matches the base workflow on stock research, market monitoring, and investment news.
Stock Spinoff Investing also has a free plan, so you can try it without paying. Free-plan limits: Public spin-off calendars are free.

Watch for: Narrow strategy scope: The product is focused on spin-offs and related special situations, not broad stock research or portfolio construction.

View SSI Premium

Details Compare

The Zen of Investing

Strong runner-up

Best for: Event-driven investors looking for a free, focused tracker for definitively announced spinoffs and recent spinoff documents.

The Zen of Investing best matches the base workflow on stock research, market monitoring, and investment news.
The Zen of Investing also has a free plan, so you can try it without paying. Free-plan limits: Free public site with no subscription or paywall found.

Watch for: Niche manual resource: The site is a curated spinoff and special-situation reference, not a real-time event database, screener, or portfolio platform.

Track upcoming spinoffs

Details Compare

Detailed Alternatives

I want to

Pay lessFill a gapUpgrade overall

Free tiers first, then the lowest starting price.

Drop-in replacement

The Zen of Investing

Bottom line: Event-driven investors looking for a free, focused tracker for definitively announced spinoffs and recent spinoff documents.

Keep

Calendar
Corporate Actions & Special Situations
Blogs

Gain

No additional capabilities listed.

Lose

News
Alerts
Dividends
Splits

Watch out

Avoid as a full replacement if you rely on insider and institutional tracking, portfolio watchlists, and charting and technical analysis.
Free-plan limits: Free public site with no subscription or paywall found. The upcoming list was updated September 21, 2026 and the recent list August 4, 2026.
Niche manual resource: The site is a curated spinoff and special-situation reference, not a real-time event database, screener, or portfolio platform.

Cost

Free, no signup

Free onlyno paid tier

$100/mo less than InsideArbitrage

Fit: Drop-in replacement

Track upcoming spinoffs Compare

Full review and details

Quality-checked pick

OpenInsider

Analyst pickTested by us

Bottom line: Investors who want a free Form 4 transaction screen before paying for an insider-data service.

Keep

Insider Data
Screeners
Data Visualizations

Gain

No additional capabilities listed.

Lose

News
Alerts
Calendar
Corporate Actions & Special Situations

Watch out

Avoid as a full replacement if you rely on investment news, portfolio watchlists, and portfolio tracking.
Free-plan limits: Open access site with no public paid plan found. Some CSV-style workflows depend on query parameters and page behavior rather than a documented API.
U.S. SEC scope: Coverage centers on SEC Form 4 insider filings and does not solve global director-dealing coverage.

Cost

Free, no signup

Free onlyno paid tier

$100/mo less than InsideArbitrage

Fit: Partial replacement

Screen insider trades Compare

Full review and details

Partial replacement

Tracefour

Bottom line: Investors who want a free heatmap for US insider filings, four European registers, and US Congress trades.

Keep

Alerts
Insider Data
Institutional Ownership
Screeners
Data Visualizations
Watchlist

Gain

US Government Trades
Market Sentiment
APIs & Data Feeds
Reddit

Lose

News
Calendar
Corporate Actions & Special Situations
Dividends

Watch out

Avoid as a full replacement if you rely on investment news, portfolio watchlists, and backtesting and quant research.
Free-plan limits: Public filing pages and API reads are available without signup. API reads are limited to 60 requests per hour per IP, or 600 with a free key. A free account is required to follow entities and receive filing email alerts.
API request limits: The API allows 60 requests per hour per IP without a key, or 600 per hour with a free API key. Static JSON exports cover trackers and Congress members.

Cost

Free, no signup

Free onlyno paid tier

$100/mo less than InsideArbitrage

Fit: Partial replacement

Open Tracefour heatmap Compare

Full review and details

Stock Spinoff InvestingPartial replacementFree • From $58.08/moFree, no signup

Partial replacement

Stock Spinoff Investing

Bottom line: Special-situations investors focused on spin-offs looking for calendars, writeups, monthly recommendations, updates, Q&A, and community discussion.

Keep

Calendar
Corporate Actions & Special Situations
Blogs
Newsletters
Videos

Gain

Stock Ideas

Lose

News
Alerts
Dividends
Splits

Watch out

Avoid as a full replacement if you rely on insider and institutional tracking, portfolio watchlists, and charting and technical analysis.
Free-plan limits: Public spin-off calendars are free. SSI Premium is offered monthly or annually. Premium includes recommendations, weekly updates, Q&A, Discord, prior newsletters, and a 30-day money-back guarantee.
Narrow strategy scope: The product is focused on spin-offs and related special situations, not broad stock research or portfolio construction.

Cost

Free, no signup

$58.08/moto go paid

$41.92/mo less than InsideArbitrage

Fit: Partial replacement

View SSI Premium Compare

Full review and details

Special Situations DigestClosest replacementFree • From $25/mo billed yearlyFree with signup

Closest replacement

Special Situations Digest

Bottom line: Portfolio managers, analysts, family offices, and independent investors seeking special situations across more than 25 markets.

Keep

News
Alerts
Calendar
Corporate Actions & Special Situations
Regulatory Filings Monitoring
Screeners

Gain

Stock Ideas

Lose

Dividends
Splits
Insider Data
Institutional Ownership

Watch out

Avoid as a full replacement if you rely on insider and institutional tracking, portfolio watchlists, and backtesting and quant research.
Free-plan limits: Signup required. Free readers get the first 10 situations in each issue and access to the free archive. Pro costs $39 per month or $300 per year.
Triage, not diligence: The product is for idea generation and triage. Users still need to verify filings, valuation, legal terms, liquidity, timing, and downside risk.

Cost

Free with signup

$25/moto go paid, billed yearly

$75/mo less than InsideArbitrage

Fit: Drop-in replacement

Compare digest plans Compare

Full review and details

What This Shortlist Tells You

Special Situations Digest is the closest drop-in replacement with overlapping coverage in News, Alerts, and Calendar while adding Stock Ideas coverage and Weekly digest with hundreds of structured special-situation cards across more than 25 markets. The archive covers more than 60 countries. and Situation types include activist campaigns, strategic reviews, acquisitions, divestitures, going-private deals, tender offers, spin-offs, rights offerings, buybacks, special dividends, restructurings, bankruptcy exits, SPACs, and deal terminations. features (workflow overlap ~89%).

Every pick keeps a free tier; start with Special Situations Digest, Stock Spinoff Investing, and The Zen of Investing to road-test InsideArbitrage workflows without paying up front.

Round out your stack with new coverage areas like Stock Ideas, US Government Trades, Market Sentiment, and APIs & Data Feeds.

InsideArbitrage still leads on Dividends, Splits, Portfolio, and Playbooks & Case Studies, so keep it handy for those workflows.

Coverage Snapshot

Where alternatives already align

Most shared categories across the top matches.

Calendar×3 Corporate Actions & Special Situations×3 Data Visualizations×3 Screeners×3 Alerts×2 Blogs×2 Insider Data×2 Newsletters×2

New angles introduced

Categories the alternatives add beyond InsideArbitrage.

Stock Ideas+2 APIs & Data Feeds+1 Market Sentiment+1 Reddit+1 US Government Trades+1

Free Access & Pricing

Free to start

All 5

All 5 have a standing free tier, not a trial.

Paid plans from

$25/mo

Special Situations Digest is the cheapest paid upgrade. InsideArbitrage starts at $100/mo.

Mobile app

0 of 5

0 add a mobile app that InsideArbitrage lacks.

API access

0 of 5

None expose a public API.

Hands-on tested

1 of 5

1 tested hands-on. 1 are analyst picks.

Coverage overlap

86%

Average share of InsideArbitrage categories each alternative covers.

Free Alternatives FAQ

What are the best free alternatives to InsideArbitrage?

Special Situations Digest, Stock Spinoff Investing, and The Zen of Investing cover the most InsideArbitrage workflows without a paid plan, in that order.

Do these picks stay permanently free?

Yes. Every tool listed has a standing free tier, not a trial. Expect caps on exports, seats, or history once you use it heavily.

Which InsideArbitrage workflows stay covered on the free plan?

The free plans cover News, Alerts, Calendar, Corporate Actions & Special Situations, Regulatory Filings Monitoring, Screeners, Data Visualizations, Newsletters, Blogs, Videos, Insider Data, Institutional Ownership, and Watchlist. Core InsideArbitrage workflows in those areas do not need a paid upgrade.

What extra coverage do the free alternatives add?

The free alternatives add Stock Ideas, US Government Trades, Market Sentiment, APIs & Data Feeds, and Reddit, which InsideArbitrage does not cover.

Where might I still rely on InsideArbitrage?

Dividends, Splits, Insider Data, Institutional Ownership, Portfolio, Watchlist, Blogs, Videos, Playbooks & Case Studies, News, Alerts, Regulatory Filings Monitoring, Screeners, Data Visualizations, Newsletters, Calendar, and Corporate Actions & Special Situations stay with InsideArbitrage. Keep it for those tasks, or budget for a paid plan elsewhere if they matter.

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Feedback

Missing an alternative, or is a listing out of date? Tell me and I will look.

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.