Research

What backs
every number.

The methodology, the backtest framework, the live rankings and the changelog. Every correction is public and dated.

Read the methodology See the changelog Found an error? [email protected]
PublicSource disclosure, formula by formula
MonthlyRankings refreshed; live numbers on every load
DatedEvery methodology change logged

The record

How, and
what changed.

Data-feed endpoints, the IV rank formula, Black-Scholes Greeks, POP and POT derivations, backtest assumptions and known model limits, with a log of every change.

Methodology Reference Full source disclosure: data-feed API endpoints, IV rank formula, Black-Scholes Greeks, POP/POT derivations, backtest assumptions and known model limitations. Changelog Dated Public log of methodology updates, calculator additions, data-source changes and content rewrites. Every research correction is logged with a date.

Live rankings

Editorial lists,
live numbers.

Rankings refreshed monthly. The IV rank and options yields under them recompute from the feed on every page load.

Best stocks for the wheel strategy Live 10 picks with live IV rank and the computed 15-delta cash-secured put yield per name. Most liquid ETFs for options trading Live Top 10 ranked by options volume, bid-ask tightness and IV regime. Best stocks for covered calls Live Quality and IV combinations ranked for systematic call writing. Best options strategies for income Live Strategies ranked by realised win rate, premium yield and capital efficiency.

Strategy research

Guides with
win-rate data.

Each guide carries the typical win rate at entry, the managed-trade realised win rate, profit-target percentages and the probability-of-profit maths.

Iron Condor 65-70% Full setup, POP/POT maths, profit-target percentage analysis. 65 to 70% win rate. Credit Spreads (put and call) Guide Put credit spread against call credit spread side by side, with the screener. Bull Put Spread Guide Bullish credit spread with full P&L examples. Bear Call Spread Guide Bearish credit spread, strike selection and managed exits. The Wheel Strategy Guide Cash-secured puts, assignment, then covered calls. All strategies Hub The full library, with backtest statistics.

Concept research

The building
blocks, explained.

Deep-dive explainers on the concepts the analytics are built from.

Volatility surface Explainer Live 3D vol surface viewer for AAPL with the skew, smile and term-structure breakdown. Implied volatility Explainer What IV is, how it is computed, and how to read IV rank against IV percentile. Options Greeks Explainer Delta, gamma, theta, vega and rho: the Black-Scholes derivations and the trading applications. All of the learning centre Hub The full library of options concept explainers.

Free tools

Live data,
no signup.

Live institutional data and Black-Scholes calculations across 13 of the most-watched tickers.

IV rank calculator and lookup Free Live IV rank, 52-week high and low, the IV history sparkline and an IV crush calculator. Options profit calculator Free Multi-leg P&L, all the Greeks, a price-by-time heatmap and live chain auto-fill. Iron condor calculator Free POP, POT, a six-scenario stress test and live four-leg chain auto-fill. Options Greeks calculator Free Delta, gamma, theta, vega and rho, plus a theta-decay-by-DTE reference table.

Found an error, or want a methodology change?

Corrections are public. Send a note with your independent calculation to [email protected]; if we agree, the change goes into the next changelog entry with your credit.

Check the numbers
on a live chain.

Every formula in the methodology runs on the same feed in the Terminal. A free account runs the Terminal on AAPL with no card.

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Real market data, not a sandbox. See it live on AAPL.