Corporate action
A corporate action, or corporate event, is an action by an issuer that affects its securities and their holders, such as a dividend, a coupon payment, a stock split, a rights issue, a merger or a redemption. Events are mandatory, mandatory with choice, or voluntary, and must be processed along the whole custody chain.
Roles that need it
What it is
A corporate action is any event started by the issuer of a security that changes the security or what its holders receive. Distributions include cash dividends, coupon payments and bonus shares. Reorganisations include stock splits, mergers, conversions and redemptions. Some events give holders a choice, such as a dividend payable in cash or shares, a rights issue or a tender offer.
Each event has key dates. The ex-date is the first trading day without the entitlement. The record date fixes who is entitled, based on settled positions. The payment date is when cash or securities are paid. For events with a choice there is also an election period and a market deadline. Information flows from the issuer through its agent and the central securities depository (CSD) to custodians and finally to investors, usually in ISO 15022 or ISO 20022 messages.
Why it matters
Corporate actions are one of the largest sources of operational loss in asset servicing. A missed announcement, a wrong rate, an election sent after the deadline or a wrong tax rate moves real money. Many events are complex and arrive in free text, so data must be read, checked against several sources and turned into a clean record (the golden copy) before it reaches clients.
The EU has harmonised processing through market standards, and the Eurosystem’s single collateral management rulebook (SCoRE) applies standards for corporate actions on collateral assets. The move to T+1 in October 2027 changes the timing between the ex-date and the record date and puts pressure on market claims, the compensation of entitlements when trades settle late.
Worked example
Illustrative numbers. A fund holds 100,000 shares. The issuer announces a rights issue: 1 new share for every 4 held, at 8 euro, while the share trades at 12 euro.
The fund receives 100,000 / 4 = 25,000 rights. If it subscribes, it pays 25,000 x 8 = 200,000 euro and gets 25,000 new shares. The theoretical ex-rights price is (4 x 12 + 8) / 5 = 11.20 euro, so each right is worth about 11.20 minus 8 = 3.20 euro. If the fund does nothing and the rights lapse with no compensation, it loses about 25,000 x 3.20 = 80,000 euro of value. This is why the election deadline and the default option matter.
Who uses it
Corporate Actions Analysts capture, validate and process events, collect elections and book entitlements. Custody Operations Analysts handle the flows with sub-custodians and CSDs. Fund Accountants book events in the fund and value them correctly in the net asset value. Investment Operations Analysts pass elections from portfolio managers. Portfolio Manager Assistants prepare decisions on voluntary events. Reference and Security Master Data Analysts update instrument data after reorganisations.
Common confusions
A corporate action is different from a general meeting, although meetings are often handled by the same team and decide many actions. A mandatory event with options, where a default applies if no choice is made, is different from a purely voluntary event, where doing nothing means not taking part. Finally, the ex-date and the record date are separate dates, and the gap between them depends on the settlement cycle.