What Is a Trailing Stop Loss? How It Locks In Profit, and Where It Fails
A trailing stop loss follows price up and never moves down. How it locks in profit, how wide to set it, and the gap risk no stop order can fix.
Entries by Spencer Li
Kelly Criterion Position Sizing: What the Formula Says, and Why Full Kelly Is Too Much
The Kelly formula gives the share of your account to risk for the fastest long-run growth. Why that answer is too big for real trading, and what half Kelly costs and saves.
What Are 0DTE Options, and Why Do They Behave Like Gambling?
0DTE options expire the same day. Why theta and gamma peak on the last day, why the payoff looks like a lottery ticket, and 3 rules to keep it from becoming a casino.
Options Greeks Explained: What Each Number Actually Tells You
Delta, theta, vega and gamma in plain English, plus what open interest and gamma exposure can and cannot tell you about an options trade.
Are Deep ITM LEAPS Just Leveraged Stock?
Deep in-the-money LEAPS move almost like the shares for less cash. A worked comparison of the payoff, the time value, dividends and the 100% loss case.