State Street SPDR Portfolio S&P 500 ETF (SPYM) 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 Portfolio S&P 500 ETF (SPYM) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $4.8M, listed on AMEX, carrying a beta of 1.01 to the broader market. The State Street SPDR Portfolio S&P 500 ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P 500 Index (the "Index")A low-cost ETF that seeks to offer precise, comprehensive exposure to the US large cap market segmentThe Index represents approximately 80% of the US marketOne of the low-cost core State Street SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classes Led by Gary L. French, public since 2005-11-15.

Snapshot as of May 15, 2026.

Spot Price
$87.10
Call OI
23.0K
Put OI
15.3K
Total OI
38.4K
Put/Call Ratio
0.27

As of May 15, 2026, State Street SPDR Portfolio S&P 500 ETF (SPYM) has 38.4K total contracts outstanding across all expirations. Put/call OI ratio is 0.67 (call-heavy positioning). 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 SPYM open interest history Data Feeds Strategy Selection

Strategy selection on State Street SPDR Portfolio S&P 500 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 15.6% 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 SPYM open interest history questions

What is the current SPYM options open interest?
As of May 15, 2026, State Street SPDR Portfolio S&P 500 ETF (SPYM) has 38.4K total contracts outstanding across all listed expirations, split as 23.0K calls and 15.3K 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 SPYM put/call open interest ratio?
Put/call OI ratio of 0.67 is call-heavy, often a directional bullish or upside-speculation signal.
What does SPYM 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.