Free Stock Screener · 10,000+ Stocks · SEC Data

The market prices what it expects. I measure what it misses. — Fabio Brina, Founder of Zyberno

A free professional stock screener and stock analysis platform. Screen 10,000+ stocks with 138 institutional metrics, read full company reports — powered by the Brina Gap — published research, ranked first among all pure valuation metrics tested, that quantifies exactly where the market is wrong.

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18 Years in Markets
DOI-Published Research
10,000+ Stocks
100% Free
The Platform

Professional Stock Screener & Stock Reports

Institutional-grade tools, completely free. Built on real-time SEC data and powered by the Brina Gap — a research framework that finds what the market misprices.

Zyberno Stock Screener — Warren Buffett strategy showing 61 stocks with Owner Earnings, Margin of Safety, ROIC and 138 institutional metrics
Stock Screener

Professional Stock Screener

The only free platform with Owner Earnings and DCF-based Margin of Safety calculations — previously exclusive to hedge funds. Filter 10,000+ stocks with 138 institutional metrics across authentic Buffett, Graham, Lynch, and Greenblatt strategies.

Owner Earnings DCF Margin of Safety 276 Filter Options Real-time SEC Data
10,000+ Stocks
138 Metrics
276 Filters
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META Platforms Stock Report — Zyberno Score 93/100 Strong Buy, Margin of Safety +98.3%, Brina Gap +18.3% Double Discount
Stock Reports

Professional Stock Reports

Every report includes the full Brina Gap analysis and the live Valuation Matrix — showing exactly where a stock sits across Margin of Safety and Brina Gap. Powered by the proprietary Zyberno Score across 8 categories and 4 years of quarterly data.

Brina Gap Analysis Valuation Matrix 250+ Metrics Zyberno Score
250+ Metrics
16 Quarters
8 Score Categories
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Zyberno Working Papers · ZWP-2026-001 · v3.0 · DOI 10.5281/zenodo.20651608

What Makes It Different: The Brina Gap

Validated on the complete, survivorship-free S&P 500 — every constituent 2010–2024, including delisted firms. In head-to-head testing the Brina Gap ranked first among all pure valuation metrics — ahead of book-to-market, earnings yield, EPV, and the 90-year-old Margin of Safety. Built into every screen and stock report on Zyberno.

Traditional valuation anchors — P/E ratios, earnings yield, historical DCF — all rely on demonstrated performance. But markets price the future. The result is a systematic blind spot: a stock can look cheap relative to history while the market has already correctly identified deteriorating economics — or look expensive while the market persistently underestimates a compounding machine.

The Brina Gap compares two independently derived growth rate estimates: what the business can structurally deliver (gf), and what the current price implies it will deliver (g*). Their difference is a forward-looking mispricing signal structurally distinct from every traditional valuation measure.

Brina Gap  =  gf  −  g*
gf  =  ROIC  ×  Reinvestment Rate   // Fundamental Growth Rate
g*  =  Market-Implied Growth Rate   // Reverse DCF
#1 Among All Valuation Metrics Tested
58.9% Accuracy Flagging Overpriced Stocks
p<10−7 Statistically Significant
See the current movers → · Read the full paper → · Zyberno Research →
Valuation Matrix — live on every Zyberno stock report
DOUBLE DISCOUNT UNDERESTIMATED GROWTH VALUE TRAP OVERVALUED & OVERHYPED MoS +35.0% · Gap +14.2pp META FY22 MARKET GAP + − MARGIN OF SAFETY ← Overvalued Undervalued →
How to read this matrix

Two independent signals. The Margin of Safety tells you if the stock is cheap relative to what the business has historically generated for owners — it reads the past. The Brina Gap tells you if the market is underestimating what the business is structurally capable of going forward — it reads present capital economics against what the current price implies about the future.

When both point positive simultaneously — DOUBLE DISCOUNT — the market is wrong on two independent dimensions at once. The most dangerous scenario is a VALUE TRAP: appears cheap historically, but the Brina Gap reveals the market has already priced in the deterioration.

This matrix is calculated in real time from SEC filings and appears live on every stock report at Zyberno.com.

Complete Toolkit

Free Investment Calculators & Tools

Professional-grade calculators and market indicators — built to the same standard.

🎯 Brina Gap Movers

Which stocks the framework flags right now — Double Discounts and value traps, updated from SEC filings with a monthly email digest

🧭 Market Dashboard

Is the market overvalued? The Buffett Indicator, Shiller PE, yield curve & credit spread in one view — plus the Zyberno Market Valuation Score

📈 Buffett Indicator

Market valuation analysis using Warren Buffett's favourite metric for timing market entries and exits

📉 Yield Curve

Real-time 10Y–2Y Treasury spread — see whether the yield curve is inverted, the classic recession signal

📐 Shiller PE (CAPE)

The Shiller PE / CAPE ratio with 150 years of history — the long-term gauge of whether the market is overvalued

🩺 Credit Spread

Baa–Treasury credit spread with 40 years of history — a real-time read on credit-market stress and recession risk

💰 DCF & WACC Calculator

Owner earnings-based DCF with transparent assumptions, sensitivity tables, and actionable safety output

🔢 Monte Carlo Simulation

Portfolio risk modelling and scenario analysis across thousands of simulations

⚡ Options Strike Analyzer

Options Greeks, optimal strike selection, and comprehensive risk analysis

🔄 Wheel Strategy Analyzer

Options wheel strategy optimisation, backtesting, and risk management

😱 Fear & Greed Index

Real-time market sentiment analysis and contrarian investing indicators

🧮 Investment Calculator

Compound interest, inflation adjustment, and long-term growth projections

📊 Cash Flow CAGR

Compound annual growth rate analysis and detailed cash flow projections

🔍 Broker Finder

Find the right broker for your investment strategy with detailed side-by-side comparisons
— Fabio Brina · Founder, Zyberno

"Wall Street tools. Main Street prices."

18 years in markets. Zyberno was built to give individual investors access to the same analytical frameworks used by institutional professionals — with guidance built in at every step. Every tool, every metric, every calculation reflects a real question from a real investor.

Zyberno Research — Working Papers →

Zyberno calculates intrinsic value from fundamentals — ROIC, reinvestment rate, owner earnings, and reverse DCF — and shows the result without adjusting it to match the current price or analyst consensus. If the model produces a fair value of $500 on a $300 stock, that is what we show. The assumptions are visible. The math is reproducible.

You've seen where the market is wrong.
Now act on it.

Run your first screen with the Buffett strategy, open any stock report, and see the Valuation Matrix live — completely free, no credit card, no account required.

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