What is the BIO options turnover ratio?

As of Jun 1, 2026, BIO turnover ratio is 0.02 (11 contracts traded against 673 contracts outstanding). A turnover ratio below 0.5 is typical maintenance flow against existing positions.

Where is BIO open interest concentrated?

Gamma concentration is 0.14: open interest is more distributed across strikes, reducing any single-strike pinning force. The full per-strike open-interest distribution is visible in the chain view.

Why does volume-open-interest matter for BIO options?

Volume tells you what is being traded today; open interest tells you what was already there. The combination separates opening flow (today's volume building new positions) from closing flow (today's volume unwinding existing ones), and locates the strikes that carry hedging-driven support or resistance based on dealer-gamma concentration.

Bio-Rad Laboratories, Inc. (BIO) Volume & Open Interest

Volume and open interest by strike show where trading activity and outstanding positions are concentrated. Clusters of OI often act as support and resistance levels.

Bio-Rad Laboratories, Inc. (BIO) operates in the Healthcare sector, specifically the Medical - Devices industry, with a market capitalization near $8.45B, listed on NYSE, employing roughly 7,700 people, carrying a beta of 1.06 to the broader market. Bio-Rad Laboratories, Inc. Led by Norman D. Schwartz, public since 1980-02-27.

Snapshot as of Jun 1, 2026.

Spot Price: $306.80
Total Volume: 11
Total OI: 673
Call OI: 537
Put OI: 136
Gamma Concentration: 0.14

As of Jun 1, 2026, Bio-Rad Laboratories, Inc. (BIO) has 11 contracts traded today against 673 contracts outstanding. Open interest breaks down as 537 calls and 136 puts. Turnover ratio is 0.02: typical maintenance flow relative to existing positions. Gamma concentration is 0.14: open interest is more distributed across strikes. Comparing today's volume to accumulated open interest reveals whether flow is opening new positions or closing existing ones, with heavy OI strikes often acting as support and resistance.

How BIO volume & open interest Data Feeds Strategy Selection

Strategy selection on Bio-Rad Laboratories, Inc. options does not derive from any single metric in isolation. The volume & open interest view above sits inside a broader read: ATM IV currently sits at 41.3% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the volume & open interest data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.

How to read the BIO volume and OI data

The two-panel chart above splits Bio-Rad Laboratories, Inc. contract activity into volume (daily flow) and open interest (cumulative inventory) per strike. The per-strike grid table beneath gives the precise numbers for the densest 30 strikes. Current put/call ratio is 0.38, call-heavy - speculative or bullish positioning dominates. Total call OI of 537 versus put OI of 136 gives a put/call OI ratio of 0.25 - structurally a slower-moving signal than the volume-based ratio.

BIO flow vs positioning

Volume tells you what flows happened today; OI tells you what positions accumulated. Both can move in opposite directions: rising volume with falling OI means contracts are being closed (covering); rising volume with rising OI means new positions are being opened. The combination matters more than either alone for reading sentiment. The per-strike grid distinguishes the strikes attracting flow today from the strikes carrying accumulated inventory - high volume at strikes that also carry high OI typically means rolling activity (closing front-month, opening longer-dated), high volume at low-OI strikes typically means fresh directional positioning. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.

Using BIO OI/volume data alongside other surfaces

Per-strike OI is the input to dealer-gamma calculations: strikes with elevated call OI generate gamma walls that dealers must hedge into as spot approaches them. The gamma-exposure page combines this distribution with the dealers' assumed-long-gamma assumption to project hedge flow. Volume cross-checks recent positioning shifts in the chain that haven't yet shown up in cumulative OI. Pair both with the term-structure view on the volatility page to determine whether the activity is concentrated in near-dated event hedging or longer-dated structural positioning. Front-month expiration for BIO sits at 17 days, so near-dated volume currently dominates the flow reading.

Learn how volume and open interest is reported and how to read the data →

Frequently asked BIO volume & open interest questions

What is the BIO options turnover ratio?: As of Jun 1, 2026, BIO turnover ratio is 0.02 (11 contracts traded against 673 contracts outstanding). A turnover ratio below 0.5 is typical maintenance flow against existing positions.
Where is BIO open interest concentrated?: Gamma concentration is 0.14: open interest is more distributed across strikes, reducing any single-strike pinning force. The full per-strike open-interest distribution is visible in the chain view.
Why does volume-open-interest matter for BIO options?: Volume tells you what is being traded today; open interest tells you what was already there. The combination separates opening flow (today's volume building new positions) from closing flow (today's volume unwinding existing ones), and locates the strikes that carry hedging-driven support or resistance based on dealer-gamma concentration.