What Are Ex-Dividend and Ex-Rights Adjustments? Key Dates, Prices and Dividend Recovery

Ex-dividend and ex-rights events separate specified shareholder entitlements from a stock and adjust its trading reference price. Cash distributions involve an ex-dividend adjustment. Stock dividends and subscription rights associated with cash capital increases can involve an ex-rights adjustment. Understanding these events includes eligibility, price adjustments and actual payment dates. TWSE: Reference-price calculator

For example, if a stock closes at NT$50 before going ex-dividend and distributes NT$2 per share, its reference price in a simple cash-dividend case becomes NT$48. The holder's stock-price reference decreases while the holder receives a separate dividend entitlement.

Distinguishing Dividends, Ex-Dividend and Ex-Rights Events

A dividend describes what is distributed. An ex-dividend or ex-rights event describes the separation of entitlements and the reference-price adjustment. See cash and stock dividend definitions for an introduction.

Some basic explanations focus only on stock dividends when describing ex-rights events. A simultaneous cash dividend, share distribution or capital increase requires checking the actual announcement. TWSE: Calculation results and formulas

Which Dates Matter for Eligibility?

Last eligible purchase day: generally the preceding trading day

For ordinary Taiwan stock transactions, investors generally need to buy on or before the trading day preceding the ex-dividend or ex-rights date and hold through the end of that preceding trading day.

For example, if Monday is the announced ex-dividend date and Friday is the previous trading day, with no intervening market holidays, Friday is the last eligible purchase day. Yuanta: Purchase timing and eligibility

Ex-dividend or ex-rights trading date: when entitlements separate

Shares purchased on the ex-dividend date generally exclude that cash dividend. Shareholders who already qualified retain the entitlement even if they sell on that date. Check holdings before the ex-dividend date to determine participation.

Record date and book closure: establishing shareholder records

Companies announce a distribution record date and related book-closure dates to establish shareholder records and entitlements. Regular Taiwan settlement occurs on the second business day after trading, so buying on the record date may already be too late to receive the distribution. TWSE: Settlement

Book closure is different from a trading suspension. Orders and settlement continue to follow applicable market and broker rules.

Payment date: when cash or shares actually arrive

The ex-dividend date differs from the cash payment date. Companies separately announce distribution dates, and cash and stock dividends may arrive on different days.

Start with the TWSE ex-dividend and ex-rights schedule, then compare the company's announcement on the Market Observation Post System to confirm amounts, dates and any changes.

Calculating a Simple Cash-Dividend Reference Price

For a cash dividend without other simultaneous adjustments:

Ex-dividend reference price = preceding closing price − cash dividend per share.

At a preceding price of NT$50 and a dividend of NT$2, the reference price is NT$48. For 100 shares:

This illustration excludes taxes and fees and assumes the market price equals the reference price. Actual buyers and sellers determine execution prices, which may be above or below that reference. TWSE: Reference-price formulas

Calculating an Ex-Rights Adjustment for Stock Dividends

If there is only a free share distribution, without a cash dividend or cash capital increase:

Ex-rights reference price = preceding closing price ÷ (1 + free share distribution ratio).

At NT$60 per share and a 20% distribution ratio, the reference price is 60 ÷ 1.2 = NT$50. A holder of 100 shares receives 20 more, bringing the holding to 120. At the reference price, 120 × 50 = NT$6,000, equal to the original 100 × 60 = NT$6,000, before market changes and other effects.

This calculation uses the announced distribution ratio directly. For simultaneous dividends and capital increases, use the complete official formula and announcement fields.

The complete ex-dividend and ex-rights reference-price formula is:

Reference price = (preceding closing price − cash dividend per share + cash subscription price × cash subscription ratio) ÷ (1 + free share distribution ratio + cash subscription ratio).

What Does “Filling the Dividend Gap” Mean?

In the example with a preceding price of NT$50, a NT$2 dividend and a NT$48 reference price, a later recovery to NT$50 is commonly called completing dividend-gap recovery in Taiwan, or “填息.” A rise from NT$48 to NT$49 is a partial recovery. Trading below the ex-dividend reference price is commonly described as “貼息.”

A recovery to the pre-adjustment price after an ex-rights event is called “填權”; combined events may be described as “填權息.” When share distributions change the share count, calculate returns using the actual shares held and dividends received.

Paying a dividend does not ensure subsequent recovery, and there is no universal recovery period. Earnings, dividend policy, industry conditions and the wider market all influence prices.

Why Can a Dividend-Paying Investment Still Lose Money?

Suppose you buy 100 shares at NT$50 before ex-dividend, receive NT$2 per share and eventually sell at NT$45. The result before taxes and fees is:

(45 − 50) × 100 + 2 × 100 = −NT$300.

The NT$200 dividend offsets part of the NT$500 price loss, leaving a NT$300 loss. Conversely, selling at NT$49 produces a NT$100 gain before taxes and fees even though the price has not recovered to NT$50.

Taxes and fees also affect the outcome. Dividend income tax, potentially applicable supplementary health insurance premiums, and securities transaction tax on sales are different charges. See dividend income tax and dividend supplementary premiums.

Three Steps to Check Distribution Information

1. Confirm the company and market. TWSE and Taipei Exchange cover different securities; search the correct stock code.
2. Read the dates and distribution details. Distinguish cash dividends, share distribution ratios, cash capital increases and payment dates.
3. Check holdings and settlement. Use actual execution quantities to confirm your shares.

Ex-Dividend and Ex-Rights FAQ

Can I buy on the ex-dividend date and receive that dividend?

Generally not for ordinary Taiwan stock transactions. The entitlement has separated on that date; investors generally need to buy by the preceding trading day and hold through its close.

Does selling on the ex-dividend date cancel my dividend?

If you qualified beforehand, generally no. Payment follows the company's distribution schedule.

Is the ex-dividend date also the payment date?

No. The company announces the payment date separately, which can be some time later.

Is buying before ex-dividend and selling after collecting the cash a guaranteed profit?

No. The reference price adjusts, market prices can decline and costs apply. Evaluate the total result rather than the dividend alone.

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