Guides
Plain explanations of the market mechanics behind the alerts: what each one means, where the data comes from, and what it does not tell you.
- What zero borrow means Zero borrow means no shares are left to lend to short sellers. What that changes, what it does not, and how the borrow fee fits in.
- The Reg SHO threshold list explained The Reg SHO threshold list names stocks with persistent fails to deliver. How a stock gets on it, the 13-day close-out rule, and what it does not mean.
- Trading halts and halt codes explained What T1, T2, LUDP and the other halt codes mean, how volatility pauses and news halts differ, and how a halted stock reopens.