To The Moon

Mathematical Money | October 3, 2026 A few people have asked me to explain how I actually sell puts, so this is the whole thing from the beginning — what it is, how I choose strikes and dates, how to place the order without giving money away, and a live mistake of mine that illustrates the one rule everybody breaks. If you already sell premium regularly, the first section will be familiar. Skip to the ordering mechanics, because that's where most people quietly lose a chunk of their edge. What you're actually agreeing to Selling a cash-secured put means promising to buy 100 shares of something at a set price, by a set date, in exchange for cash today. You set aside the money to honour that promise — that's the "cash-secured" part — and the cash you receive is yours whatever happens. Two ou