How to spot a trading bot in the order flow

2026-09-18

A candlestick chart tells you the result: price went up or down. It never tells you who pushed it. The trade tape usually does — if you know what to look for.

People trade in bursts, machines keep a beat

Open the raw stream of executed trades on any pair. Real people leave a messy trail: $300 here, $12,000 there, $700 a minute later. The gaps are random too — two prints back to back, then silence, then three more.

An algorithm looks nothing like that. It slices the order into equal pieces and sends them at even intervals. In the tape it reads as a rhythm: $2,000 — pause 1.8 s — $2,000 — pause 1.8 s — $2,000. No human hand produces that, however hard it tries.

Three signs are enough

1. Equal size

Compare consecutive prints. When several land within ten percent of each other, you are almost certainly looking at one large order being sliced. A strong hint: the amounts are round in dollars rather than in coins — the algorithm counts money, not units.

2. Rhythm

The gaps between those prints are close to equal. Half a second of jitter is fine — the bot adapts to the book. Ten seconds of jitter is a different story.

3. One direction

A bot building a position hits one side only: buys or sells. When equal slices come from both sides at once, you are watching a market maker quoting, not somebody accumulating. The full separation is in market maker or accumulation.

Why candles hide all of this

A candle is already a summary: a whole minute squeezed into four numbers. Twenty bot hits of $2,000 and a single human order of $40,000 draw exactly the same candle. The difference exists only in the flow of trades, which is why traders read the tape instead of the chart for this.

What to do with it

• The bot keeps buying and price does not move — somebody large is feeding it. Price stays put until that seller runs out.
• The bot buys and price follows — there is no resistance, the position is being built into thin air. This is the setup worth watching.
• The bot goes quiet mid-run — it either finished or got stopped out. Price often continues in the direction it was pushing, simply because the pressure disappeared.

Doing this by hand does not scale

On one pair you can see the rhythm with your own eyes. Across a thousand pairs on twelve exchanges you cannot: the hits land in dozens of places at once and are history a minute later. That is a job for software — listen to every trade, look for equal slices on a steady beat, and show the result as a card: which exchange, which coin, which side, how fast. One detail decides whether it works at all: everything is counted in dollars, not in coins, otherwise the evenness of the slices smears out as price moves.

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