Who's on the other side

You hit “sell.” A second later, the trade goes through. Someone, somewhere, just bought the exact shares you dumped. Who are they? You imagined you were escaping a sinking ship. But every seller needs a buyer, and every buyer a seller. The price you got is the price they agreed to pay. So who is the person on the other side — and why do they want what you just threw away?

That question, taken seriously, changes how the whole market looks.

Every trade has two sides, and they want different things

Item 4 said a price is where a buyer and a seller meet. Now look at who is actually meeting. The market is not one crowd all chasing the same thing. It is millions of people and machines, each with its own goal and its own clock.

When you sell in a hurry, it is tempting to think the buyer is either smarter than you or a fool. Usually they are neither. They are simply playing a different game, on a different timescale, for a different reason. Once you can name the main players, “the market” stops being one scary mind and becomes a room full of strangers with mismatched aims.

The four main players

Everyday savers. People like you, putting money aside for years — a house, retirement, a child’s education. Their clock is long: ten, twenty, thirty years. Many don’t even pick stocks. They put a fixed sum in every month and rebalance once a year — selling a little of what grew, buying a little of what shrank, to keep their mix steady. A saver rebalancing is often the calm buyer on the other side of a panic.

Big funds. Pension funds and index funds manage other people’s money in vast amounts. A pension fund must pay retirees decades from now, so it allocates across thousands of holdings to a plan. An index fund simply tracks a list — when the index it follows adds a company, the fund must buy that company, whatever the price. These funds don’t trade on a hunch. They trade because a rule or a plan told them to.

Market makers. These are firms whose whole job is to be ready to trade. At any moment they post two prices: a price they’ll buy at (the bid) and a slightly higher price they’ll sell at (the ask). The gap between them is the spread, and the spread is their pay. They are not betting on whether the stock goes up or down. They are getting paid to always be there, so that when you want to sell, a buyer exists instantly. That readiness is called liquidity — the ease of trading without waiting.

Central banks. A central bank — the body that manages a country’s money — sometimes buys or sells bonds in huge size. But it is not chasing profit. It is steering the economy: cooling inflation, calming a crisis, setting the cost of borrowing. When it acts, it is doing policy, not playing the market.

A worked example: who took your trade

You panic-sell 100 shares of a steady company at £50. Walk through who plausibly took the other side.

Most likely, a market maker caught it. Suppose it was quoting a bid of £49.98 and an ask of £50.02 — a spread of 4 pence. It bought your 100 shares at £49.98, paying £4,998, and now holds them, hoping to sell to the next buyer at £50.02. If that next buyer shows up, the maker earns 4p × 100 = £4 for doing nothing but standing in the middle. Times thousands of trades a day, that adds up. The maker never had a view on the company. It just rented you instant liquidity.

A few seconds later the maker’s 100 shares pass to an index fund. Earlier that morning the index it tracks added this company, so the fund must hold a set amount — it buys at £50.02 because its rule says buy, not because £50.02 looks cheap.

So your “escape” was absorbed by a firm earning a 4p spread, then parked with a fund obeying a list. Neither thinks you were a fool. Neither thinks the stock is doomed. They simply weren’t playing your game.

But the spread cuts both ways. Suppose that instead of a calm tick, real bad news breaks the instant after the maker bought your shares — the company’s main factory burns down, and the price drops to £45. The maker is now sitting on 100 shares it paid £49.98 for, worth £45. That’s a £498 loss on inventory it never wanted to bet on. This is the maker’s real risk: it provides liquidity for a few pence, and once in a while the market runs it over. That risk is exactly why the spread exists, and why it widens when things get scary.

The market is not one mind

Step back. Behind every trade you make sits a stranger on a different clock: a saver topping up for retirement, a fund following its rules, a market maker renting out liquidity, a central bank steering the whole economy. None of them is “the market.” There is no single mind deciding the stock is good or bad — only a crowd of mismatched goals briefly agreeing on a number.

That is worth holding onto. When you feel the urge to sell because “everyone is selling,” remember who is calmly buying from you, and why. You are one participant among millions, seeing one sliver of the picture from one seat. The price is not a verdict handed down from above. It is the temporary meeting point of people who, mostly, are not even trying to do the same thing you are. Seeing that should make anyone a little slower to read the market as a single, knowing judge — and a little humbler about their own seat in it.