Charts from the ledger. Every figure is computed from market data; sources and caveats are stated on each page.
- Options payoff calculator
Type a ticker, pick an expiry, see every structure priced off the live chain with real bid/ask. Payoff curve, breakevens, and what the spread costs you.
- Why it loses: spread, premium, compounding
Three costs stacked. A 51,000x cost ladder from SPY to the cheapest option, a real +71bp edge it swallows, and how +0.71% a trade becomes -32% a year.
- What actually happens in a trough
Two moving parts: direction scales linearly with leverage, cost scales with its square. Why order of days does not matter, and why a crash is a variance event.
- SOXL: six months of monthly lows
Where each month’s low actually fell. Day 3, 8, 20, 16, 9, 22, 4 — no part of the month to aim at.
- Martingale on a 2x S&P fund from $10,000
The money doubles while the price steps widen. Real history demanded $320,000; a 2008-scale decline demands $5.1M.
Static pages, no tracking, no data collected.