What is the current XBI options open interest?

As of May 15, 2026, State Street SPDR S&P Biotech ETF (XBI) has 622.4K total contracts outstanding across all listed expirations, split as 243.8K calls and 378.6K puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.

What is the XBI put/call open interest ratio?

Put/call OI ratio of 1.55 is put-heavy, often indicating hedging demand or bearish positioning.

What does XBI open interest tell traders?

Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.

State Street SPDR S&P Biotech ETF (XBI) Open Interest History

Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.

State Street SPDR S&P Biotech ETF (XBI) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $8.35B, listed on AMEX, carrying a beta of 1.09 to the broader market. The State Street SPDR S&P Biotech ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P Biotechnology Select Industry Index (the "Index")Seeks to provide exposure to the Biotechnology segment of the S&P TMI, which comprises the following sub-industries: BiotechnologySeeks to track a modified equal weighted index which provides the potential for unconcentrated industry exposure across large, mid and small cap stocksAllows investors to take strategic or tactical positions at a more targeted level than traditional sector based investing public since 2006-02-06.

Snapshot as of May 15, 2026.

Spot Price: $130.88
Call OI: 243.8K
Put OI: 378.6K
Total OI: 622.4K
Put/Call Ratio: 0.67

As of May 15, 2026, State Street SPDR S&P Biotech ETF (XBI) has 622.4K total contracts outstanding across all expirations. Put/call OI ratio is 1.55 (put-heavy positioning, often indicating hedging or bearish bias). Open interest reflects accumulated positions from prior sessions; persistent growth indicates sustained directional or hedging interest, while sharp drops typically mean post-expiration clean-up.

How XBI open interest history Data Feeds Strategy Selection

Strategy selection on State Street SPDR S&P Biotech ETF options does not derive from any single metric in isolation. The open interest history view above sits inside a broader read: ATM IV currently sits at 29.5% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the open interest history 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.

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

Frequently asked XBI open interest history questions

What is the current XBI options open interest?: As of May 15, 2026, State Street SPDR S&P Biotech ETF (XBI) has 622.4K total contracts outstanding across all listed expirations, split as 243.8K calls and 378.6K puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.
What is the XBI put/call open interest ratio?: Put/call OI ratio of 1.55 is put-heavy, often indicating hedging demand or bearish positioning.
What does XBI open interest tell traders?: Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.