An analytics terminal for independent investorsEst. 2026

Every position
is a lemma.
Your portfolio,
a proof.

A research workspace built around the idea that every holding should be defensible from first principles — starting with the quality of the business, then intrinsic value, scenarios, and a documented thesis.

Stock screener, a five-pillar quality score, four intrinsic-value models, portfolio analytics, and a journal that keeps the record of your decisions over time.

NASDAQ & NYSEAs filed with the SECNo credit card
NASDAQ · AAPL
Apple Inc. — a lemma.
Spot
$247.18
Quality score
8.1/ 10
High quality
Strongest: Profitability · Weakest: Growth
Profitability
9.4
Solvency
8.2
Growth
5.6
Efficiency
8.6
Predictability
8.5
DCF: screens cheap → worth a closer look
2019202020212022202320242025
Topographic Earnings Bands · Net Income · Revenue · FCF
Four primitives

Screener find.

Filter about three thousand US-listed companies and ADRs across fifty-odd fundamentals — ours included. Save a screen, or send it as a link. Part of Ultimate.

Quality judge.

Five pillars — profitability, solvency, growth, efficiency, predictability. Whether a business is worth your time, before you spend an hour on a DCF.

Valuation price.

Four models on one axis — Advanced DCF, Ben Graham, Simple DCF and the Dividend Discount Model. Every assumption yours, a bear/base/bull case behind each. Part of Ultimate.

Portfolio prove.

Track holdings in any currency, free. Attribution, factor exposure and correlation with Ultimate. A journal that makes you accountable.

Pricing
7-day free trial · no card
Ultimate prove.
Everything in Lemma Analysis. One plan.
$8.99/mo
billed monthly
Pay yearly and it's $6.67 a month instead. You save $27.89 a year.
Research
—Unlimited tickers
—Screener · 8 filter categories
—Intrinsic value · 4 models
—Fair value · 7 multiples vs. own history
—Financials as filed with the SEC
—Compare · several companies and metrics on one chart, whole history
—Quality Score on any company
Portfolio
—Unlimited portfolios & positions
—Portfolio analytics
—Factor & correlation matrix
—Return history & drawdowns
—CSV import from your broker
—Earnings & ex-dividend calendar
News & journal
—Company news, filings & press releases
—News digest ranked by impact
—Weekly digest by email
—Insider alerts on what you hold, by email
—Events marked on the price chart
—Public thesis journal
+and more — one plan, everything in it