THREE VERDICTS ON FRAMEWORK FIT
Gemstone.
Geode.
Sediment.
RockTurners is an AI stock screener grounded in SEC filings. Every company it evaluates lands in one of three tiers — a verdict on fit to a published framework, never an action to take. The evidence behind each verdict is cited to the filing.
4 LENSES · 10 FRAMEWORKS
Published frameworks, applied identically
Each framework is a fixed screen plus a fixed evaluation prompt, in the tradition of published value- and growth-investing research. Every subscriber who runs a framework gets output from the identical criteria.
| Lens | Focus | Frameworks |
|---|---|---|
| 01 · VALUE | Cheapness with a margin of safetyFour ways of asking the same question — is this business worth clearly more than it trades for? — from statistical net-nets to durable-moat franchises. |
|
| 02 · GROWTH | Growth priced with disciplineThree ways to hold growth accountable: classify before comparing, insist the price stay proportionate to the growth rate, and require the leadership show up in the reported numbers. |
|
| 03 · QUALITY | Durable returns on capitalTwo depths of the same question — does this business earn high returns on capital, and can it keep doing so? — one quantitative, one read fifteen points deep in the filings. |
|
| 04 · INCOME | Payout streaks that can continueOne discipline, applied strictly: dividend growth streaks matter only when the coverage, cash flow, and balance sheet behind them currently support the streak. |
|
Framework names describe the method. Practitioner names appear only as "in the tradition of" attribution on each lens page. Browse all four lenses →
HOW IT WORKS
Two stages, from universe to verdict
Filter the universe
Each framework's fixed quantitative filters run against the SEC EDGAR operating universe — ~4,000 U.S.-listed operating companies. Near-miss rationales are kept, so you can see why a company dropped out.
Read the filings
Survivors go to the framework's AI evaluator, which reads targeted EDGAR sections and returns a Gemstone / Geode / Sediment verdict — every claim cited to its filing section.
Check the evidence
Every verdict opens to scored dimensions, trap signals with their sources, and what couldn't be verified — flagged as unknowns, not papered over.
ANATOMY OF A VERDICT
Every claim carries its source
A verdict is not a number — it's a structured read of the filings. Every one carries the same four parts:
Sample Company's rank is supported by recurring operating earnings and current financial filings. The 10-K filed March 3, 2026 (within the 14-month window) shows net income from continuing operations of $412.8 million for FY2025, with stable, recurring operating performance across its two reporting segments. Operating expenses grew proportionally at 4.1%, with no material one-time items identified in the provided MD&A or financial notes. The data integrity, earnings recurrence, and accounting quality scores all meet or exceed the minimum threshold of 3, with no disqualifiers triggered.
WHAT IT IS · WHAT IT ISN'T