Zyberno Stock Valuation

Zyberno gives Claude valuation data for US-listed companies, computed directly from their SEC filings (10-K, 10-Q, 20-F) rather than from third-party aggregators. Free, no account needed.

Seven read-only tools:

• get_stock_valuation: one company's valuation record — the growth its price implies (reverse DCF on enterprise value), the growth its return on capital and reinvestment can fund (the difference is the Brina Gap), intrinsic value from an owner-earnings DCF, margin of safety, Zyberno quality score, ROIC, free cash flow and key ratios.
• get_supply_chain: who supplies a company, who buys from it and who depends on it, as the annual reports state it: each link graded sole source, primary or named, with the sentence from the filing and a link to it on SEC EDGAR (about 1,250 companies, since 2013, updated nightly).
• screen_stocks: find companies by valuation, quality, growth, balance sheet, momentum or earnings surprise.
• list_flagged_stocks: the monthly lists of stocks where both valuation lenses agree (Double Discount) or disagree (Value Trap).
• get_us_market_valuation: how expensive the whole US market is against its own history (Buffett indicator, Shiller PE, yield curve, credit spread), as one 0-100 score.
• calculate_dcf_value: a two-stage DCF on assumptions the user supplies.
• simulate_portfolio_outcomes: a Monte Carlo distribution of portfolio outcomes.

Coverage: about 6,000 US-listed stocks with full records; the Brina Gap is computed where the inputs are meaningful (about 2,600 companies; not banks). Company records refresh within about two weeks of each new filing, prices about once a week. The methodology is published (Brina, 2026, DOI 10.5281/zenodo.20651608).

The data is measurement, not investment advice.