Bybit’s Open Interest Gets a Major Makeover: What’s New?

Bybit, the world’s second-largest crypto exchange by trading volume, just dropped a significant update that will make its Open Interest (OI) numbers cleaner and more honest starting June 11, 2026.

The major exchange is switching from bilateral (double-counted) Open Interest to unilateral (single-counted) reporting — the same standard used by most traditional derivatives markets.

What This Actually Means for Traders

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The only thing changing is how Bybit displays the total Open Interest. Because they’ll now count each position only once instead of twice, the displayed OI numbers will look roughly 50% lower. It’s purely a calculation tweak, not a real drop in market activity.

Here’s the simple difference:

• Old way (Bilateral): A trader with $1M long and $1M short on the same asset = $2M OI counted.
• New way (Unilateral): Same trader = only $1M OI counted.

To keep position limits unchanged, Bybit will simply double the rate used in calculations. Everything balances out for users.

Why Bybit Is Doing This Now

The goal is better transparency and easier comparison with other platforms. Traders and analysts will now get a more accurate picture of real market positioning instead of inflated double-counted numbers.

What’s Changing on the Platform?

• Starting June 11, the new OI display will roll out across:
• Markets page (Perpetuals, Futures, Options)
• Trading page OI indicator
• Contract details and Open Interest pages
• In-app charts and data panels

API users will get two new fields: `singleOpenInterest` and `singleOpenInterestValue` (in USD). Developers should update their systems before the switch.

This is a smart, pro-transparency move from Bybit that brings it in line with global standards. While the headline OI numbers will drop, the actual market strength stays the same — just shown more honestly.

A cleaner, more trustworthy Open Interest is good news for everyone trading on Bybit.

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