GuruFocus adds Screeners, Stock Comparison, Portfolio, Backtesting, Investor Holdings, US Government Trades, News, Alerts, Calendar, GDP, Interest Rates, Inflation Rates, Unemployment Rates, Commitment of Traders (COT), Yield Curves, Financials, Valuation Models, Scores, Transcripts, Insider Data, ETF Overview, ETF Holdings, APIs & SDKs, and Sheets / Excel Add-ins coverage that Letters and Reviews skips.
VOL. XCIV, NO. 247
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Saturday, November 1, 2025
Tool Comparison
GuruFocus vs Letters and Reviews comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Quick takeaways
Letters and Reviews includes Blogs categories that GuruFocus omits.
GuruFocus ships a mobile app. Letters and Reviews is web/desktop only.
In depth comparison
GuruFocus
gurufocus.com
Editor’s pick Hands-on review
A global equity research and value-investing platform with robust screening, backtesting, and portfolio tools. Features and data access depend on plan tier—Premium vs. Premium Plus—while enterprise-level users can license data directly via API. Add-ins for Excel and Google Sheets extend workflows, though usage caps apply to lower tiers. Alerts and mobile apps are included across paid plans.
Categories
ScreenersStock IdeasStock ComparisonPortfolioBacktestingInvestor HoldingsUS Government TradesNewsAlertsCalendarGDPInterest RatesInflation RatesUnemployment RatesCommitment of Traders (COT)Yield CurvesFinancialsValuation ModelsScoresTranscriptsInsider Data13FETF OverviewETF HoldingsAPIs & SDKsSheets / Excel Add-ins
Platforms
WebMobileAPI
Pricing
FreeSubscription
Quick highlights
- All-in-One Screener with hundreds of filters, historical screening, and custom filter creation.
- Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries.
- Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel.
- Specialty trackers for insider trading and U.S. politician trades.
- ETF profiles with current and historical holdings, including N-PORT data and timestamps.
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Letters and Reviews
lettersandreviews.blogspot.com
Free, personal curation site that aggregates **fund manager letters**, tickers mentioned in those letters, and **quarterly 13F** filer lists the author follows. Each quarter page links to original letters and maps tickers to quick‑reference pages; some 13F pages embed holdings tables and activity (new/increased/decreased/sold) for many managers. Also includes a small **Podcasts** list. No accounts, alerts, exports, or API—think link‑hub for primary sources rather than a data platform.
Categories
Platforms
Web
Pricing
Free
Quick highlights
- Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup).
- Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio).
- Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested.
- A small **Podcasts** page curating investing/finance episodes the author plans to re‑listen to.
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Where they differ
GuruFocus
Distinct strengths include:
- All-in-One Screener with hundreds of filters, historical screening, and custom filter creation.
- Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries.
- Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel.
- Specialty trackers for insider trading and U.S. politician trades.
Letters and Reviews
Distinct strengths include:
- Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup).
- Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio).
- Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested.
- A small **Podcasts** page curating investing/finance episodes the author plans to re‑listen to.
Feature-by-feature breakdown
| Attribute | GuruFocus | Letters and Reviews |
|---|---|---|
Categories Which research workflows each platform targets | Shared: Stock Ideas, 13F Unique: Screeners, Stock Comparison, Portfolio, Backtesting, Investor Holdings, US Government Trades, News, Alerts, Calendar, GDP, Interest Rates, Inflation Rates, Unemployment Rates, Commitment of Traders (COT), Yield Curves, Financials, Valuation Models, Scores, Transcripts, Insider Data, ETF Overview, ETF Holdings, APIs & SDKs, Sheets / Excel Add-ins | Shared: Stock Ideas, 13F Unique: Blogs |
Asset types Supported asset classes and universes | Stocks, ETFs, Mutual 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, Mobile, API | Web |
Pricing High-level pricing models | Free, Subscription | Free |
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 GuruFocus and Letters and Reviews both support?
Both platforms cover Stock Ideas, and 13F workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do GuruFocus and Letters and Reviews require subscriptions?
Both GuruFocus and Letters and Reviews keep freemium access with optional paid upgrades, so you can trial each platform before committing.
Which tool has mobile access?
GuruFocus ships a dedicated mobile experience, while Letters and Reviews focuses on web or desktop access.
What unique strengths set the two platforms apart?
GuruFocus differentiates itself with All-in-One Screener with hundreds of filters, historical screening, and custom filter creation., Backtesting with survivorship-bias-free data. Windows vary by plan: up to 3 years for Premium and up to 10 years for Premium Plus. Global coverage spans 80+ countries., and Guru portfolios tracking 13F and mutual fund holdings, real-time picks, and portfolio downloads to Excel., whereas Letters and Reviews stands out for Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup)., Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio)., and Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested..
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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.