Open interest and options flow

The lesson in plain words

The same lesson as the slides above, written out in full.

1. Two numbers worth understanding

Welcome. In this lesson we look at two of the most useful numbers on an options chain and how to read them without fooling ourselves. Open interest and options flow can show you where attention is building, but they reward patience and context far more than quick reactions.

• Open interest is the running count of option contracts still open
• Volume is how many contracts changed hands today
• Together they hint at where attention is building
• Big positions can mark levels traders are watching
• Unusual activity is a clue to investigate, never a trade call on its own

A quick note: This is financial education only, not financial advice. Everything here uses illustrative numbers to explain how markets work, and Titan does not tell you what to buy or sell.

2. Open interest versus volume

Volume and open interest are easy to mix up. Volume is simply how many contracts traded today and it starts fresh each morning, while open interest is the running total of contracts that are still open. When you see both rising alongside the price, it often means new money is stepping in rather than old positions being unwound.

• Volume resets to zero at the start of every session
• Open interest carries over and only changes when positions open or close
• A busy day can leave open interest flat if trades mostly close existing positions
• Rising open interest with rising price suggests new money committing
• Reading them together tells you more than either alone

3. Where the big positions sit

If you line up open interest by strike, you can see where the crowd already holds contracts. Big clusters can behave like rough areas of interest, places where a lot of positions sit and where price sometimes pauses. Just remember these are reference points to watch, not targets the market is obliged to hit, and they shift as positions change.

• Plotting open interest by strike shows where contracts pile up
• Large clusters can act as rough areas of interest to watch
• Heavy call open interest above price and put below is common
• These are reference levels, not guarantees the price must reach them
• Positions shift daily, so re-check rather than assume

4. Unusual activity is a clue, not a trade call

Unusual activity is one of the most misused ideas in trading. A sudden jump in a strike is a reason to ask questions, not a reason to act. Very often there is a plain explanation, such as an earnings date, a hedge against another holding, or one leg of a larger spread. Treat it as a clue that sends you digging, and confirm it with other evidence before you draw any conclusion.

• Unusual activity is a starting question, not an answer
• Ask what could explain it: earnings, hedging, or one leg of a spread
• A single large trade is often a hedge, not a directional bet
• Confirm with other evidence before you conclude anything
• Treat it as a clue to research, never a standalone trigger