The 7 calendar days before ex-dividend are a specific window where dividend-focused trades behave differently than the rest of the month. Some strategies work best in this window, some fall apart in it. This article defines the window, explains why price behaviour changes, and covers the one rule that usually matters: you must hold through the ex-date, not just buy before it.
What the 7-Day Window Actually Is
The ex-dividend date is the cutoff: own the stock at market close the day before ex-date, and the dividend is yours. The 7-day window is the run-up. In that stretch the stock often drifts up slightly in anticipation, then drops by roughly the dividend amount on ex-date as the payment "leaves" the share price.
The "Free Money" Trap
A common mistake: buy stock 2 days before ex-date, collect the dividend, sell the day after ex-date. Run the math: you paid $100, received a $1 dividend, sold at $99. You made $0, paid commissions, and owe tax on the dividend. The market is efficient about this; the payment shows up in the share price.
Real dividend capture only works when you either (a) have a thesis that the stock will recover the drop inside your holding window, or (b) hold long enough to benefit from the lower tax rate on qualified dividends.
Where to See the Window in the App
The Dividend Data calendar highlights every holding and watchlist ticker whose ex-date falls within the next 7 days. Each row shows the declared amount, the current yield, and the qualification deadline — so you know the exact close-of-day where you need to own the stock to receive the payment.
Window = 7 days before ex-date
Must own at close of T-1 to qualify · price drops by payment on T+0
Use the window as a filter, not as a standalone trade signal