How trading actually works Β· Chapter 6 Β· 11 min read
From a click to ownership β settlement, demat & T+1
What happens in the plumbing after you hit 'buy': how shares actually land in your account, and why 'settlement' is more than a technicality.
You tap 'Buy', the app flashes 'executed', and a number changes. It feels instant and frictionless. But behind that single tap sits a quiet, precise machine β brokers, exchanges, clearing corporations and depositories β that moves your money out and your shares in. Until recently this took several days. Understanding how the plumbing works explains a surprising number of things that otherwise look like glitches or unfair restrictions in your app.
The chain of custody behind one tap
When you place an order, it travels through a short chain, and it helps to picture each link:
- 1Your broker receives the order and routes it to the exchange. The broker is your doorway to the market, nothing more.
- 2The exchange (NSE or BSE) matches your order against a counterparty in the order book.
- 3A clearing corporation steps in between the two sides as guarantor, making sure that even if your counterparty defaults, your trade still completes.
- 4The depository updates the official register of who owns what, and the shares appear in your account.
That clearing corporation in the middle is doing something subtle and important: it becomes the buyer to every seller and the seller to every buyer, so you never have to trust the specific stranger on the other side of your trade. You trust the system, and the system stands behind every transaction. This is a large part of why a modern exchange is safe to use at all.
The two depositories and your demat account
Here is something many new investors get wrong: your shares do not sit with your broker. They sit, in purely electronic form, in a demat account ('dematerialised' β the paper share certificates of decades past converted into digital records). Those records live at one of two depositories: NSDL or CDSL. Your broker is just the app you use to place orders; the depository is the actual, independent register of ownership.
This separation is a deliberate safety feature, not an accident. If your broker were to vanish overnight, your shares are still recorded in your name at the depository, independent of the broker entirely. The broker can't quietly spend your shares, because it doesn't hold them β it only has permission to act on your instructions. Knowing this changes how you think about broker risk: your shares are far safer than your uninvested cash sitting in a broker's account.
Settlement, and what T+1 really means
When you buy, two things must change hands: your money has to go out, and the shares have to come in. The day this fully completes β money debited, shares irrevocably credited β is called settlement. India now runs on a T+1 cycle: you trade on day T, and it settles the next working day, T+1.
- T (trade day) β your order matches on the exchange. You've agreed a deal, but the exchange of money and shares hasn't finished.
- T+1 (next working day) β money and shares actually settle; the shares are now firmly, finally in your demat account in your name.
This is genuinely fast by world standards. Much of the rest of the globe still runs on T+2, and India has been moving even further β an optional same-day (T+0) cycle is already being rolled out in beta for a set of stocks. Faster settlement matters because the gap between trading and settling is exactly the window in which something can go wrong, so shrinking it reduces risk for everyone in the system.
Delivery vs intraday: the settlement fork
Settlement also explains the most basic choice your broker offers when you buy: delivery versus intraday. A delivery buy means you intend to actually take the shares into your demat β the trade goes all the way through settlement and you become a real owner. An intraday buy means you intend to buy and sell within the same trading session, before settlement even kicks in, so the two trades net off and no shares are ever delivered.
The reason this distinction exists at all is settlement. Because nothing is finally delivered until T+1, the system can let you open and close a position within day T without any shares changing hands β that's intraday trading. The instant you carry a position past the session's close, you're in delivery territory and the settlement machine takes over. Beginners should generally stick to delivery: intraday is short-term trading against exactly the fast players the previous chapter warned you about.
Corporate actions: when your share count changes on its own
Open your demat one ordinary morning and you might find you suddenly hold twice as many shares, each at half the price. Nothing was stolen, and β this is the key β nothing was gained. That's a stock split, one of several events that change your holding mechanically while leaving your actual ownership untouched.
- Split β one share is divided into several, each at a proportionally lower price. You own more shares of the same total value.
- Bonus β extra shares are issued free to existing holders. It looks like a gift, but the price adjusts down to match; total value is unchanged. It's an accounting reshuffle, not new wealth.
- Dividend β actual cash, carved out of profits, lands in your bank account. This one is real money leaving the company and reaching you.
- Buyback β the company uses its cash to buy back and cancel some of its own shares, often a tax-efficient way to return cash to remaining owners by increasing each survivor's slice.
The demat is your register β so keep it in order
Because the depository β not the broker β is the legal record of ownership, a few housekeeping things attach to your demat account rather than to your trading app, and they're easy to overlook until they matter enormously. A nomination tells the depository who inherits your shares if something happens to you; without it, your family can face a slow, painful claims process to access holdings that are unambiguously theirs. A joint demat account, or correctly recorded ownership, determines who actually controls and inherits the shares.
There's also a feature worth knowing about precisely so you treat it with respect: you can pledge your shares as collateral, for instance to borrow against them or to fund derivatives positions. Pledging is a real instruction to the depository to mark your shares as encumbered. It can be useful, but it also means your supposedly-safe holdings can be sold out from under you if the loan goes wrong. The same independence that makes the demat safe also means instructions sent to it are powerful β treat any 'pledge' or transfer request with the seriousness of signing over an asset, because that's exactly what it is.
Why the plumbing is worth knowing
You'll never operate this machinery by hand β it runs invisibly with every trade. But knowing it's there changes how you behave. You'll understand why your shares are safer than your broker, why a freshly-bought stock has settlement quirks, why a bonus issue isn't a windfall, and why India's fast settlement is quietly a strength of its market. The plumbing is the difference between a click and actual, legally-recorded ownership β and ownership, as the very first chapter argued, is the whole point.
Key takeaways
- βBehind one tap sits a chain: broker β exchange β clearing corporation (the guarantor) β depository.
- βShares live in a demat account at NSDL or CDSL, independent of your broker β which is why they're safer than your uninvested cash.
- βIndia settles on T+1: trade today, settled the next working day β with an optional same-day (T+0) cycle already in beta.
- βSplits and bonuses change your share count but never your ownership fraction or total value.
- βDividends and buybacks are the only corporate actions that actually move cash to owners.
Education, not investment advice. Nothing here is a recommendation to buy or sell any security.