How the exchange works
Settlement (D+2), custody and clearing
5 min
When your buy order fills, you do not instantly have the shares in hand and the seller does not instantly have the cash. Behind the scenes a settlement process moves both — reliably and on a fixed timetable.
Settlement and the D+2 rule
Settlement (liquidação) is the actual exchange of shares for money after a trade is matched. It does not happen the same instant; it happens on a standard delay:
- D+2 means settlement occurs two business days after the trade date (D being the trade day). Both B3 and the US market currently settle stocks on this T+2 / D+2 cycle.
So if you buy on Monday, the shares are formally yours and the cash leaves your account on Wednesday. In practice your broker shows the position immediately, but the official transfer completes at D+2.
Clearing — the safety net in the middle
Between matching the trade and settling it, a clearing house steps in as the central counterparty. It guarantees the trade: even if one side fails to deliver, the clearing house ensures the other side is made whole. In Brazil this role is performed by B3's clearing (historically known as the CBLC). Clearing is what lets you trade with a total stranger and never worry about whether they will actually pay.
Custody (custódia)
Your shares are not stored in a drawer — they are held electronically in custody (custódia), a central depository that records who owns what. In Brazil this central depository is operated by B3. Your broker is simply the gateway; the official record of your ownership lives in the depository under your name.
Why this matters
This invisible machinery — clearing guaranteeing trades, custody recording ownership, settlement completing at D+2 — is exactly what makes a stock exchange trustworthy. You can buy from an anonymous seller across the country and be certain the shares will arrive and the money will be safe.
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