About this reference
Who publishes it, how it is put together, what it deliberately does not do.
Who
This site is published by Wall Street Wiki. A reference published by the wallstreet.wiki network. Every figure is stated as a formula and recomputed from it, every convention names the authority that sets it, and corrections are versioned and dated.
Why it exists
This is a reference corpus, not a tutorial and not commentary. Every strategy carries its exact maximum profit, maximum loss, breakeven and payoff expression as formulas rather than descriptions, and every figure labelled Worked has been recomputed from those formulas. Every convention states the rule and, where one exists, the authority that sets it. Notation is uniform across the whole site. Underlying and prices: S is the underlying price, S0 the entry price, K a strike, and K1 < K2 < K3 < K4 the strikes of a multi-leg structure in ascending order. Premiums and cash flows: P a single option premium, C a net credit, D a net debit, N a net credit that may be negative, and W a strike width. Model inputs: r the risk-free rate, q the continuous dividend yield, sigma implied volatility, T time to expiration in years, tau a remaining interval in years, and M the contract multiplier. Distribution functions: N() is the standard normal cumulative distribution and phi() its density; d1 and d2 are the standard Black-Scholes-Merton arguments. Volatility and probability: J is the standard deviation of a one-off event move, p a probability of profit, b a payoff ratio of maximum profit to maximum loss, and f* the Kelly fraction. All figures assume a standard 100-share multiplier and ignore commissions. Numeric inputs in worked examples are chosen so the arithmetic is checkable; they are not observations of any market and no figure on this site is a quote, a forecast, or a statistic.
How it is built
Every page here is generated from a single reviewed data file. That has consequences worth stating: the content is a data edit rather than a code change, every page has a JSON twin carrying the same facts without markup, and the review date attached to a page comes from the data file rather than from the build clock - so rebuilding without changing anything does not make the content look fresher than it is.
| Property | This site |
|---|---|
| Licence | CC BY 4.0 - https://creativecommons.org/licenses/by/4.0/ |
| Content reviewed | 2026-08-27 |
| Machine-readable corpus | /index.json and /llms-full.txt |
| Change feed | /changes.json - poll this instead of re-crawling |
| Network | 9 sibling references, indexed at wallstreet.wiki |
| Third-party requests | None. No fonts, no CDN, no analytics, no trackers on any page. |
| Contact | [email protected], or the form. Corrections get answered first. |
What is deliberately not here
No investment performance figures. Not because there are none, but because an unaudited return published on a commercial site is the specific thing securities counsel warns about, and the antifraud rules reach a publisher whether or not they are a registered adviser. If figures ever appear here they will have been reviewed first.
No recommendations. Nothing on this site says what to buy, when, or in what size. It states how the arithmetic works. That line is deliberate: impersonal, generally circulated financial writing is publishing, and personalised advice is something else with a different regulatory regime attached.
No market levels presented as fact. Every number in a worked example is an input chosen so the arithmetic can be checked, not an observation of where anything trades. Structures and formulas are durable; levels are not, and a stale level stated confidently is worse than no level at all.
Corrections
If a formula or a worked figure here is wrong, that is worth more to fix than anything else on the site, and the fastest route is the contact form. Corrections are recorded in the change feed with a date, so what changed and when is auditable rather than silently overwritten.