The market may be pushing higher this morning, but the same cannot be said for the ASX 200 shares listed below.
However, these shares are not falling because something bad has happened. Rather, they are falling because they are trading ex-dividend today.
When a share trades ex-dividend, it means the rights to an upcoming dividend payment remain with the seller and don't transfer to the buyer. In light of this, a share price will often drop in line with the dividend to reflect this.
Three ASX 200 shares that are trading ex-dividend today are named below. Here's what you need to know about them and their dividends:

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Ampol Ltd (ASX: ALD)
This fuel retailer's shares are down 6% after trading ex-dividend for its fully franked $1.55 per share final dividend for FY 2022. Eligible shareholders can now look forward to receiving this dividend in their bank accounts at the end of the month on 30 March.
Nine Entertainment Co Holdings Ltd (ASX: NEC)
This media company's shares have dropped 3% on Friday after going ex-dividend for its interim dividend. Last month, Nine released its half-year results and declared a fully franked interim dividend of 6 cents per share. This will be paid to eligible shareholders next month on 24 April.
Treasury Wine Estates Ltd (ASX: TWE)
Finally, this wine giant's shares have slipped into the red in early trade. This morning, the Penfolds owner traded ex-dividend for its fully franked 18 cents per share interim dividend. It plans to pay this to eligible shareholders at the start of next month on 4 April.