The Best Stock Research Tools for 2026

A list of the best free and paid resources for professional investors

The Bear Cave has curated the best resources for professional investors, featuring new tools, government databases, and underfollowed accounts for idea generation. Enjoy the list; our regular newsletter returns this Sunday and our normal deep-dive investigations resume next Thursday, January 15.

A+ Free Resources

1. SEC Full-Text Search — Search through 20 years of SEC filings for specific terms, people, or entities.

2. PCAOB Auditor Search — Find the auditor and specific audit partner for any company, as well as their track record. Use the search bar in the top right and click auditor search.

3. Google Advanced Search — Use Google’s advanced search filters to find unique information. For example, filter by time for older results or search for: [Company name] filetype:pdf site:.gov to bring up interesting government records related to the company.

4. ShortReportImpact.com — New free website tracking all new activist short campaigns as well as the long-term performance of activist short-sellers. Made by @UrsusTrades.

5. Wayback Machine — A non-profit that regularly archives millions of the most visited sites. Use it to see how a site or specific webpage changes over time.

6. Webpage Archive — An alternative to the Wayback Machine that makes it incredibly easy to archive digital webpages. It often has several archives of media articles the week of publication, making it easy to track any changes over time.

7. X Advanced Search — Use the filters to search any account’s best or most relevant tweets. Or do a normal search by ticker and limit the search to “people you follow” to find high-quality tweets.

8. Open Source Intelligence (OSINT) Framework — A great master list of resources for open source intelligence research.

9. IBorrowDesk — Website with stock borrow rates and short availability.

10. Multibagger Monitor — A free newsletter by @Mike10947310 on microcaps that generally have promising technology innovations. Ideas pitched include TSSI (up ~10x) and RCAT (~5x).

11. The Captain’s Log — Lauren Balik shares actionable short-biased ideas.

12. Kfilings — Free alerts anytime your portfolio companies file new 8-Ks.

13. Glassdoor — Go reverse chronological and read through all reviews, pay extra attention to complaints about toxic work environment, sales culture, leadership, turnover, and fraud allegations. Also, look to see if reviews are evenly spaced or clustered around a day or week (a sign the reviews may be manipulated).

14. BBB — A non-profit consumer review and business accreditation site. Will often issue public alerts for particularly problematic businesses.

15. FOIAsearch.com — Search the entirety of the SEC’s FOIA Logs for signs of undisclosed SEC investigative activity. Watch this example video.

16. SiteJabber — Wide collection of consumer reviews for online businesses.

17. TrustPilot — Another consumer review site.

18. ReverseWHOIS — Shows you all websites registered to a particular company/email. For example, here is a list of ~12,000 public web domains owned by Apple.

19. PACER — Find lawsuits against any company or individual.

20. Court Listener — Search millions of legal decisions by case name, topic, or company.

21. FTC Freedom of Information Act requests — The Freedom of Information Act (FOIA) allows any U.S. citizen to request records from government agencies. The Bear Cave frequently sends FOIA requests to the FTC (FOIA@FTC.gov) to obtain copies of consumer complaints. Here’s a template for inspiration in your own research process. Learn more about the Freedom of Information Act on FOIA.gov

    

    (Sample FOIA Request from The Bear Cave to the FTC)

22. Hacker News — Search through the Y Combinator message boards for any company or topic to see what Silicon Valley thinks.

23. SEC comment letters — On EDGAR, search for a company then “CORRESP” or “UPLOAD” in the document type search to find SEC comment letters, which are a type of informal correspondence between the SEC and public companies that bring up unique issues.

24. CommentLetterSearch.com — Easily see if any public company has recent SEC comment letter activity (informal correspondence between the SEC and the company). Quickly see the severity of any issues and search the entire database of SEC comment letters

25. Google Alerts — Set Google email alerts for news related to a specific company.

26. Google Trends — Long-term trends in search volume for certain terms on Google.

27. Reddit — Often will have surprisingly good content from industry experts or former employees.

28. TikTok — Great place to search for consumer sentiment on any brand/company.

29. LinkedIn — See employees, their former workplaces, and how they know each other (e.g., red flags: CFO went to the University of Phoenix or bank loan officers previously worked for banks that failed).

30. Value Investors Club — Public platform to share stock write-ups.

31. Diffchecker — Compare any two bodies of text for potential differences (e.g., compare a company’s 2023 and 2024 risk factor disclosures).

32. Bollwerk AI — Early-stage AI-powered risk assessment tool

33. ImportYeti — Search 70 million U.S. customs sea shipment records instantly.

34. Levels.fyi – Insights into tech salaries

35. Buyside Hub – Insights into buyside compensation

36. BuysideDigest – Tracks hedge fund letters

37. “The Sketchy Companies Paying YouTubers to Promote Their Stock” — Outstanding investigation exposing the anatomy of stock promotion schemes on YouTube.

38. “The Makings of a Multibagger” — Amazing Alta Fox Capital case study on 104 multi-bagger stocks.

39. SocialBlade — Follow the social media growth of a company or individual. Two other strong alternatives include HypeAuditor and ViewStats (YouTube only).

40. Polymarket — Popular prediction market that can serve as a leading indicator for world events that affect markets

41. Kalshi — Popular prediction market that can serve as a leading indicator for world events that affect markets

42. Dune prediction market data — Easily track the growth of prediction markets

43. Disclosure Insight — Analysis on SEC investigations and other SEC matters

44. PriceScope — Real data of transaction prices for natural diamonds, updated monthly. See “Diamonds Aren’t Forever” and “Problems at Signet Jewelers (SIG)”

45. IDEX Diamond Index — Real data of transaction prices for natural diamonds, updated daily.

46. Total Real Returns — Easily track any stock’s long-term performance with dividends reinvested or adjusted for inflation.

47. Google Book Search — Search all books for specific keywords or companies.

48. Cboe Book Viewer — Shows the top buy (bids) and sell (asks) orders for any stock trading on the Cboe U.S. Equities Exchanges.

49. TV.garden — Watch live TV channels from countries all around the world.

50. Fiverr — Online marketplace with great options for basic investment diligence help.

Best X Accounts for Short Idea Generation in 2026

Accounts that consistently share high-quality short ideas:

• @ACapitalLP – Smart L/S investor

• @ActAccordingly — Very smart L/S independent research firm

• @catechwilliams — Very smart L/S equity ideas. Only tweets stock ideas. A must follow for short idea generation

• @DeepSailCapital – Smart L/S hedge fund manager, focuses on promotions and low-quality companies

• @NonGaap — Corporate governance expert

• @laurenbalik — Independent researcher, long/short tech ideas

• @CapybaraShort — Deep research on scams, frauds, and bad actors

• @pennycheck — Excellent L/S researcher

• @maninapurpledr1 — Exposing microcap pump and dumps

• @stockgutter — Small-cap short selling

• @mustang_cap23 — Smart L/S generalist analyst

• @blondesnmoney — Smart L/S investor, financials focus, independent thinker

• @JackPatrick06 — Short-focused investor

• @RealJimChanos — Needs no introduction

• @orrdavid – Very smart L/S hedge fund manager, independent thinker

• @AureliusValue – Smart short-biased investor

• @FriendlyBearSA – Smart short-biased investor

• @RagingVentures – Bill Martin, founder of Raging Capital and successful short-seller

• @taobanker – Deep value, short ideas, independent thinker

• @finphysnerd – Independent L/S investor, interesting tweets about shorting leveraged equity ETFs

• @AlderLaneEggs – Short ideas and other commentary from prolific short-seller Marc Cohodes

• @nuggiesprout – Highlights U.S.-listed Chinese pump and dumps

• @DonutShorts – Smart short-seller, credit-focused

• @AyyouEm – Smart short-seller, credit-focused

• @Fierce__beast – L/S tech investor, very smart at disruption related shorts

• @PD13158196 – Smart short-seller, independent thinker

• @ursustrades – New account closely following activist short sellers

• @John_Hempton – PM of Bronte Capital, known for shorting low-quality businesses and mining frauds

• @Seawolfcap — Phenomenal L/S financials investor

• @vikasxkumarbk — Senior Editor at The Capitol Forum, great actionable tweets

• @HFMajorTom — Smart L/S investor

• @red_dog_capital — L/S ideas and microcaps

• @ParrotCapital — Exposes scams and shorts, independent investigative research

• @wolfejosh – Prominent venture capitalist who occasionally shares short ideas (see here)

• @CrosscheckC — L/S generalist with a focus on airlines/industrials/shorts

• @StockPromoData – StockPromotionTracker.com account highlighting $100 million+ companies paying for stock promotion

View a list of all the accounts on X here.

A+ Paid Resources

1. StockPromotionTracker.com — The world’s leading database of paid stock promotion campaigns, built by Edwin Dorsey & team. We track thousands of paid stock promotion newsletters, websites, and sponsored YouTube videos in real-time, with archived data on every promotion payment. Easily see whether your portfolio companies are paying for stock promotion, and browse our curated lists of active payers for quick idea generation.

   

   (StockPromotionTracker.com dashboard of companies >$330 million market cap paying for stock promotion)

   Below is an example of a paid stock promotion campaign that was tracked and uploaded to our dashboard within minutes.

   

   (Example: VUZI promotional email campaign)

   StockPromotionTracker.com is continuously improved with new data feeds and more advanced filtering based on user feedback, and is your partner to track the most promotional companies in today’s market.

2. TIKR — An institutional-grade investing platform for individuals. Discover & research 100,000+ global stocks with the highest-quality data and tools. TIKR offers extensive free functionality and plans starting at $15/month.

3. ShortFinder — Newsletter highlighting actionable small-cap short ideas, often around dilution events. ($50/year)

4. Tegus — A powerful platform that lets you find dozens of expert network calls on any company in seconds. Great for rapidly learning about any new company/industry. ($$$)

5. InsiderScore by Verity — Track and screen management changes, auditor changes, buybacks, and insider buying. The Bear Cave uses InsiderScore by Verity to help generate our weekly summaries of notable executive departures. ($$)

6. VisualPing — Get alerts for changes made to any website. For example, The Bear Cave occasionally uses VisualPing to monitor whether a company updates executive bios or website disclosures. ($)

7. Canary Data — A new database created by a former Tiger Cub short analyst that tracks millions of data points to evaluate investment risk and risk of illegal or unethical behavior by management. Increasingly adding functionality, and everyone we know loves it. ($$$)

8. Portrait Analytics — An AI-powered research analyst tool for diligence and ongoing monitoring of ideas and themes. ($$$)

9. Seeking Alpha Premium — The comment section on Seeking Alpha articles remains active and often has sophisticated investors sharing worthwhile information. In our view, the comments, not the articles, are what make Seeking Alpha worth paying for. ($$)

10. Blue Sky Advisors — A consulting firm that works with large asset managers “to address bad corporate behavior in a way that creates lasting reforms, promotes long-term shareholder value, and reduces securities litigation costs.” Blue Sky is looking to expand its advisory services with hedge funds and activist investors and has particular expertise in governance matters. Reach out here.

11. Wappalyzer — Find out the technology stack of any website.

12. DilutionTracker.com — A leading database on dilution events at public companies.

Useful Databases

• CFPB Consumer Complaint Database — Searchable database of millions of consumer complaints to the Consumer Financial Protection Bureau.

• SEC FOIA Logs — The SEC’s monthly disclosures about FOIA requests the SEC receives. Learn more about the value of SEC FOIA logs here and here.

• Wisconsin Department of Financial Institutions FDD database — Find nearly any Franchise Disclosure Document (FDD) for franchisors that do business in Wisconsin. For example, view McDonald’s FDD here (downloadable at the bottom of the page).

• Open Payments Data — Centers for Medicare & Medicaid Services database to search payments made by drug and medical device companies to physicians for speaking fees, consulting fees, and meal reimbursements.

• CMS Drug Spending — Centers for Medicare & Medicaid Services database to provide greater transparency on spending for drugs in the Medicare and Medicaid programs.

• Open Corporates — Quickly find the executives, board members, or state registration for private businesses. Go to the Department of State filing search for more information on any entity.

• USAspending.gov — Open data source of federal spending information,
  including information about federal awards such as contracts, grants, and loans.

• Federal Procurement Data System — Searchable database of U.S. government purchase orders. Great for researching military/government contractors.

• NYC Health Restaurant Inspection Scores — Easily search for health inspection scores by restaurant chain.

• U.S Energy Information Administration — Independent statistics and analysis about U.S. energy.

• Manufacturer and User Facility Device Experience (MAUDE) Database — MAUDE is a searchable database of medical device reports of adverse events involving medical devices over the last ten years.

• BrokerCheck by FINRA — A free tool to research the background,
  experience, and disciplinary history of financial brokers, advisers and firms.

• FDIC Search Form — Searchable database of FDIC enforcement actions.

• ClinicalTrials.gov — Searchable database of clinical research studies. Website maintained by the National Institutes of Health.

• RankMyHotel — Database from government sources on hotel revenue figures for each hotel in the state of Texas.

Investor Letters, Famous Presentations, & Tweets

1. 1,100-page PDF of all Charlie Munger letters available here

2. Nick Sleep Nomad Capital Shareholder Letters 2001 to 2014 all available here

3. François Rochon Giverny Capital investor letters from 2001 to 2021 available here

4. Michael Burry Scion Capital shareholder letters 2000 to 2006 available here

5. Bob Wilmers M&T Bank shareholder letters 1983 to 2016 available here

6. Benjamin Graham’s Letters to Partners 1946 to 1958 available here

7. Peter Lynch news articles from the 1990s, scroll to the bottom of this page

8. Seven Sins of Portfolio Management, November 2005, 105-page PDF available here

9. The Walter Schloss Archive — writings from the late Walter Schloss available here

10. Blue Ridge Capital Reading List — Credit to John Zettler for sharing it publicly

11. “A Perspective on Leadership and Strategy” — Lecture from Andrew Clyde, CEO of Murphy USA (NYSE: MUSA), on capital allocation and business

12. “Confessions of a Capital Junkie” — A widely respected presentation by the late Sergio Marchionne on the automotive industry’s value-destroying addiction to capital

13. “The Makings of a Multibagger” — Case studies on 104 of the best-performing companies over the last five years and their common characteristics, trends, and catalysts

14. “Financial Fraud Throughout History: a Forensic Approach” — Jim Chanos’ Yale class syllabus

15. Accounting Guide for Annual reports — publicly uploaded here

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Please leave a comment with any great resources or accounts we missed.

Until Sunday,

Edwin

P.S. If you are looking to consume some non-finance material, two of The Bear Cave’s favorite pieces of content are Steve Jobs’ email about meeting life-changing people and a lawyer’s argument on defending guilty clients.