Most traders watch price. Institutions watch positioning. And more often than not, that positioning shows up in the options market before the stock ever moves.
In a recent video explainer, Barchart contributor Gavin McMaster describes how unusual options activity can reveal where large capital is quietly building positions — not by guessing direction, but by tracking conviction.
The key difference is simple: retail traders react to moves, while institutional traders position ahead of them.
When large funds want exposure, they don’t always go straight into shares. Options provide leverage, capital efficiency, and the ability to build size without immediately moving the underlying stock. That means the earliest signals of a major move often show up in the options market — not in the price action.
This is where most traders get it wrong. They treat unusual options activity as a shortcut, trying to copy trades without context. But the real edge isn’t in copying; it’s understanding how to read the signals that tip off big-money moves.
One of the most important metrics highlighted is the volume-to-open interest ratio.
When volume massively exceeds open interest, it suggests new positions are being opened — not just traders closing or rotating existing ones. That’s where things get interesting.
Gavin highlights a clear example in Tesla (TSLA), where over 100,000 put contracts traded against roughly 1,000 open interest. That type of imbalance isn’t random! It points to aggressive positioning, likely from larger players building exposure to a downside move.
But one data point alone isn’t enough. The real signal comes from confirmation.
Instead of focusing on a single trade, the goal is to look for repeat activity across multiple signals:
High volume relative to open interest
Large premium being deployed
Out-of-the-money contracts
Repeated appearances across multiple days
Alignment across different screeners (Options Flow + Open Interest Change)
When those conditions line up, it suggests that capital isn’t just testing a position. It’s building one.
This is exactly what Gavin noted across multiple names, including:
