Trailing Stop vs Trailing Stop-Limit Orders
Trailing stop vs trailing stop-limit: the trigger ratchets the same way in both, and the gap down is where they split. Worked on real SPY and AAPL sessions.
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Market data quality checks that catch real bugs
Market data quality checks that catch real bugs: sequence gaps, clock skew, crossed books, condition codes and split reconciliation, with live SQL for each.
Can You Lose More Than You Invest?
Can you lose more than you invest? Cash stock floors at zero. Margin debits, short sales, short options and futures each remove that floor, with data.
Protective Put vs Stop-Loss Order
Protective put vs stop-loss order on one 100-share position: how each sets a floor, what an overnight gap does to a stop, and what the put premium costs.
The 7% Sell Rule Explained: O'Neil's Stop-Loss
The 7% sell rule says sell any stock that falls 7 to 8% below your buy price. The recovery math behind the cap and why a stop order can fill well below 7%.