Why your stock can fall on its ex-dividend date

What changes when your shares go ex-dividend?#

Suppose you own a $50 share and qualify for an ordinary $1 cash dividend. The company is paying that $1 out of its cash. With everything else unchanged, you have a $49 share plus $1 owed to you: $50 combined. Your share count stays the same.

A qualifying buyer before the ex-dividend date would receive the payment. A buyer on that date generally misses it; you keep it if you sell. The $1 becomes cash when paid. Reinvesting it can buy more shares, and news or trading can move the price above or below $49.

Follow $5,000 through a $1 dividend#

Suppose you hold 100 shares of a hypothetical company. They close at $50 each before going ex-dividend, and you qualify for a $1 dividend per share. Your holding is worth $5,000 at that close and the upcoming payment is $100.

The table separates the dividend adjustment from an additional price move. It assumes no trades or other cash flows and leaves taxes and fees aside.

In the middle column, $100 of value has moved from the shares into a payment owed to you. It becomes cash when paid. Your combined value is still $5,000.

In the last column, the share price has fallen 3% from $50 to $48.50. Including the $100 dividend entitlement leaves you with $4,950, a 1% decline from the starting value. The dividend accounts for part of the price fall; the remaining $50 is still a loss in this example.

For this one-period example, the income-inclusive change is ($4,850 + $100 − $5,000) ÷ $5,000 = −1%. Once the payment arrives, count the $100 as cash and remove the amount owed. Counting both would include the same dividend twice.

Check your chart's settings too. TradingView's dividend-adjusted charts include distributions in the asset's return. If a chart already includes the dividend, adding that payment to its reported return would count it twice. The calculation above starts with unadjusted share prices and adds the entitlement separately.

Check the dates for the security you actually own#

The ex-dividend date determines whether a purchase qualifies. The record date is when the company identifies eligible registered holders. The payment date is when the distribution is scheduled to be paid.

US and UK timetables differ. Under the current US rules for normal distributions below 25% of the security's value, the ex-dividend date is the record date when that date is a business day. The SEC's investor guide explains eligibility; FINRA Rule 11140 sets out the date rules and exceptions.

The London Stock Exchange's 2026 timetable uses T+2 settlement, meaning the standard trade settles two business days later. Its normal schedule has a Thursday ex-dividend date and a Friday record date. Holidays and approved alternative timetables can change the dates.

Your location alone does not determine the timetable. If you live in the UK and hold a US-listed security, check that security's announced dates. The ordinary shares and US depositary shares of the same company can have different ex-dividend dates.

BP's second-quarter 2026 filing listed this example:

The filing quoted $0.5196 per ADS before applicable fees and a separate sterling-conversion timetable for ordinary shareholders. Match the security, dividend currency and dates to your broker's notice before calculating what should reach your account.

Do you keep the dividend if you sell before payment?#

For a normal cash dividend, if you qualified before the ex-dividend date, selling on that date or later generally leaves you entitled to the payment. Buying on the ex-dividend date generally leaves that payment with the seller. The SEC's eligibility guide explains this buyer-seller split.

Check unusual distributions separately. Under FINRA's US rule, a distribution worth at least 25% of the security's value has its ex-dividend date after the payment date. Stock distributions and depositary receipts can also have different arrangements. Read the official corporate-action notice and ask your broker how entitlement transfers before relying on the record or payment date.

Where should the payment show up in your account?#

Start with the issuer's dividend announcement and your broker's corporate-action notice. Record the eligible quantity, amount per share, payment currency and payment date. Then compare those details with the account's income and transaction records.

An amount owed before payment belongs in your reconciliation even if your broker does not display it beside the position. Keep it separate from cash available to spend. After payment, check the credited amount and any deductions or currency conversion shown on the statement.

If you chose dividend reinvestment, look for the dividend entry and the corresponding purchase. A dividend reinvestment plan uses the payment to buy additional shares. Use the recorded purchase quantity and price to reconcile your new holding. For BP's second-quarter 2026 dividend, the filing described reinvestment programmes subject to eligibility exceptions; availability depends on the security and account arrangements.

If cash or reinvested shares are missing after the expected processing time, give your broker the security identifier, relevant dates and trade confirmations. Those records let it check the entitlement and payment.

Did the company change as well?#

Going ex-dividend explains a distribution-related price adjustment. It cannot explain every movement that happens on the same day. Check whether the company also released results, changed guidance or announced another development. Our stock-price-drop research checks help you investigate a decline that needs a business explanation.

You can also use the dividend announcement as a reason to revisit how the company funds its distributions. Compare operating cash flow, investment spending, debt and dividends in the filings. A payment reaching your account says little on its own about the company's ability to maintain future payments. The cash-flow-versus-profit guide explains how to follow those cash movements.

Keep a short note: the price before going ex-dividend, the later price, the dividend entitlement and what changed in the business. Check whether your broker's gain/loss figure includes income before comparing it with your own calculation. Our research journal gives you somewhere to record the evidence and the next question.