Valuation workbench, stock screener, backtester, ranking systems and strategy simulator for people and agents.

Most stock tools give you a number and ask you to trust it. Stoxa shows the work: valuations, screens, rankings and backtests built on point-in-time SEC filings, with every assumption editable and every figure traced to its source.

  • Several models, every assumption shown
  • Every number traced to its SEC filing
  • Bad data is flagged before you see a value
  • Cancel any time
Company Price Price impliesgrowth/yr 5-yr historygrowth/yr Strict value Street value Data check
AAPLApple Inc. $344.6330 Oct 2026 32.3% 8.7% $144−58% $173−50% passed
Workbench output of 30 Oct 2026 · strict and street cases explained below · also on the screener home in the app → · not investment advice.
Product

What's inside.

Company pages, the valuation workbench, a screener, watchlists and saved screens, macro context, and the API and Python SDK.

See what the price assumes

Before showing a fair value, Stoxa runs the model backwards: holding everything else fixed, how fast would revenue have to grow to justify today's price? (Analysts call this a reverse DCF.)

Compare that with what the company has actually done and you already know a lot.

See what NVIDIA's price assumes →
Apple (AAPL)
30 Oct 2026 · price $344.63
data check passed

What the price assumes

32% revenue growth a year

for the next 10 years. Apple's last five years: 8.7% a year.

Real output from the workbench on 2026-10-30. Not investment advice.

Change what you disagree with

The model opens with assumptions taken from the company's own filings: how fast revenue has grown, what margin it earns, how much it reinvests, what its debt costs. Each one is labelled with where it came from.

Two ready-made cases: a strict one in the academic tradition, and a street case closer to how brokers model. Or edit any input. The value, the sensitivity table and the simulations all update together.

Try both cases on Apple →
Worth today, strict case
$144
growth fades from year one
Worth today, street case
$173
growth held five years
Apple, strict and street cases and the strict-case sensitivity, workbench output of 2026-10-30.

The data gets checked

Company filings are messy. Before showing a value, Stoxa checks the inputs against each other: the earnings per share we derive against the one the company reported, margins that are impossible, debt counted twice, tags a company stopped filing years ago.

If something is off, you see a warning, not a confident number.

See a valuation with data warnings: Johnson & Johnson →
Data check: warningsIf something is off, you see a warning, not a confident number.
  • Earnings per share we derive against the one the company reported
  • Margins that are impossible
  • Debt counted twice
  • Tags a company stopped filing years ago

Every number has a source

Revenue, margins, debt, share count: open any line and see the filing it came from, with the filing date and a link to EDGAR. Where a figure was restated, the original is shown next to it.

Company pages carry ten years of statements, charts and filings.

Open Apple's company page →
Assumptions
AAPL · Strict case
as of 2026-10-30
InputValueSource
Revenue growth8.7%5y PIT CAGR
Operating margin33.2%TTM
WACC9.3%Rf 4.98%
Terminal growth2.5%min(Rf, 2.5%)

Every input in the workbench carries a source label like these. The filing behind each statement line is one click away on the company page.

Apple base case, workbench output of 2026-10-30.

Screen, rank, test, follow

Filter US stocks on fundamentals, multiples and how they compare with their industry, as of any date, and see how many survive each rule. Order them with your own ranking system and check that higher ranks really earned more.

Backtest the screen with dividends and trading costs, run it as a portfolio with sell rules, stops and a hedge, or follow one of eight ready strategies whose rules are shown in full and tracked live every night.

Open the screener →Rankings →Backtest →Simulate →Strategies →
Screener
Saved screen
  • ROIC > 15%
  • P/E percentile in industry ≥ 70
  • Market cap > $2B
  • Core: Quality rank ≥ 80
WatchlistCompany
AAPLApple
MSFTMicrosoft
NVDANVIDIA

Take it into your own code or agent

The same data and engine through a REST API and Python SDK. The same numbers in your own code.

For developers and agents →
notebook.py
# pip install stoxa
from datetime import date
from stoxa import equities

d = date(2026, 10, 30)

# the same engine the workbench uses
val = equities.value_company("AAPL", as_of=d)

# the reverse solve: growth the price implies
g = equities.implied_growth("AAPL", as_of=d)
Trust

Why you can trust the number.

A source on every number

Revenue, margins, debt, share count: open any line and see the filing it came from, with the filing date and a link to EDGAR. Where a figure was restated, the original is shown next to it.

The data gets checked

Company filings are messy, so Stoxa checks the inputs against each other before showing a value. If something is off, you see a warning, not a confident number.

No secret formula

The method is the standard discounted cash flow framework taught in finance courses and used by analysts. You can read every step.

Compare

How Stoxa compares

FeatureStoxaGuruFocusSimply Wall StTIKRValueInvesting.io
Shows the assumptions behind the value and lets you change themYesPartialNoPartial—
Shows what the current price assumesYesNoNoNo—
Links every number to its SEC filingYesNoNoNo—
Checks the data and warns youYesNoNoNoNo
Strict and street cases side by sideYesNoNoNoNo
API and Python SDK includedYesAdd-onNoNoNo
CoverageUS listedGlobalGlobalGlobalGlobal
Price$29/mo~$35/mo~$11–21/mo~$55/mo$15–43/mo

As published on each company's public site in October 2026; check each for current terms.

Pricing

One plan. Everything included.

$29 a month or $290 a year. The full workbench, the API and the Python SDK. No data add-ons. Cancel any time.

What you get

  • The full workbench: company pages, screener, watchlists and saved screens.
  • Valuation: strict and street cases, sensitivity tables, simulations and saved scenarios.
  • What the price assumes, shown before any fair value.
  • A source on every number, and a data check before every value.
  • Ranking systems and backtests: each test date only sees filings and prices that were public by then; dividends and trading costs included.
  • The portfolio simulator: sell rules, stops, a hedge sleeve and sector caps.
  • Eight ready strategies tracked live: rules in full; follow one as a paper portfolio or clone it.
  • Macro context: rates and the business cycle as first published and as revised.
  • REST API, Python SDK and API keys: the same numbers in your own code.
  • US-listed companies filing with the SEC (no non-US coverage yet).
  • Email support at hello@stoxa.io.

Pick a company. See what the price assumes.

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