What's New
The latest additions and updates — new calculators, guides and explainers, newest first. The site is actively maintained; this is the quickest way to see what changed.
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Recently added tools
- Options Expiration Calendar
Upcoming monthly + weekly expiration dates, computed live.
- Diagonal Spread Calculator
A calendar with two strikes — the far leg priced by Black-Scholes.
- Long Call & Long Put Calculator
A single bought call or put — defined risk, breakeven, max profit.
- Straddle & Strangle Calculator
Buy a call and a put for a move either way.
- Site search
Search every calculator, guide and glossary term.
Latest guides
- How Much Buying Power Do Options Use? Margin for Sellers
How much buying power do options use? A cash-secured put ties up strike x 100, a naked put far less on margin, and defined-risk spreads least of all.
June 5, 2026
- How to Tell If an Option Is Liquid (Spread, OI, Volume)
How to tell if an option is liquid: a tight bid-ask spread, real open interest and recent volume - and the illiquidity that quietly eats a seller's returns.
June 5, 2026
- What to Do When an Options Trade Goes Against You
What to do when an options trade goes against you: triage the thesis first, defend it (not the loss), roll only for a reason, and know when to take the loss.
June 5, 2026
- How to Choose Stocks for Cash-Secured Puts
Sell puts only on a stock you'd own at the effective purchase price - strike minus premium. The eligibility checklist that comes before you check the premium.
May 28, 2026
- When to Skip a Cash-Secured Put
Fat premium isn't a reason to sell a Cash-Secured Put - it's a reason to dig. The red flags that make me skip a Put even when the income looks great.
May 28, 2026
- The Best Options Income Strategies for Beginners
The best options income strategies for beginners, ranked: why cash-secured puts come first, then covered calls and the wheel, and which to skip for now.
May 27, 2026
- Are Covered Calls Worth It?
Are covered calls worth it? On shares you are happy to hold and sell higher, yes; on a stock you expect to run or only bought for the premium, no.
May 25, 2026
- The Best Stocks and ETFs for Selling Covered Calls
How to pick the right stock or ETF for a covered call: shares you would hold, moderate implied volatility, deep liquidity, and upside you can afford to cap.
May 25, 2026
- The Best Stocks and ETFs for the Wheel Strategy
How to choose a wheel-strategy underlying: a stock or ETF you'd hold for years, with liquid options and moderate IV, since the wheel cycles you in and out.
May 25, 2026
- Can You Lose Money on Cash-Secured Puts?
Can you lose money on cash-secured puts? Yes, the premium cushions but does not remove the risk. Here is exactly how a loss happens and the most you can lose.
May 25, 2026
- Can You Make a Living Selling Options?
Can you make a living selling options? Possible but rare: realistic returns mean a full-time income needs a large account and the nerve to survive drawdowns.
May 25, 2026
- How Much Can You Make Selling Covered Calls?
How much can you make selling covered calls? A realistic look at the monthly and annual premium income, what drives it, and why the gross yield overstates it.
May 25, 2026
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