Open Interest · 2026-05-13
SPY Open Interest
Open Interest Stats
Showing results for SPY, 2026-05-13, calls & puts
Call Open Interest 1.0M
Put Open Interest 3.6M
OI Total 4.6M
Put-Call OI Ratio 3.47
Highest Open Interest Options
Showing results for SPY, 2026-05-13, calls & puts
Chart Guide
What is Open Interest?
Where the market has real money committed
Open Interest is the total number of outstanding options contracts at each strike — contracts that have been opened but not yet closed or expired. Unlike vol…
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Frequently Asked Questions
What does open interest tell you about SPY?
Open interest (OI) is the total number of outstanding option contracts that have not been settled. For SPY, high call OI at a strike signals resistance (sellers defending that level), while high put OI signals support (buyers protecting against downside). The current put-call ratio for SPY is 3.47, indicating a bearish market sentiment.
What is the put-call ratio (PCR) for SPY?
The current OI-based put-call ratio for SPY is 3.47. A PCR above 1.2 is generally considered bearish (more puts than calls), while below 0.8 is bullish (more calls than puts). Values between 0.8 and 1.2 indicate a balanced market. The current reading suggests bearish sentiment.
How do I use OI to find support and resistance for SPY?
Strike prices with the highest call open interest act as resistance — market makers are short calls there and will hedge by selling the stock as price approaches. Strike prices with the highest put OI act as support — market makers are short puts and buy stock to hedge. These levels are sometimes called the "max pain" point and OI walls. StrikeVue visualises all SPY OI levels on a single chart for easy identification.
How often is SPY open interest data updated?
SPY open interest data is refreshed every 5 minutes during United States market hours on StrikeVue. All data is free with no login required.