State Street SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) 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 400 Mid Cap ETF (SPMD) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $16.82B, listed on AMEX, carrying a beta of 1.08 to the broader market. The State Street SPDR Portfolio S&P 400 Mid Cap ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P MidCap 400 Index (the "Index")A low-cost ETF that seeks to offer precise, comprehensive exposure to mid cap US equitiesThe Index is float-adjusted and market capitalization weightedOne 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 public since 2013-07-09.
Snapshot as of May 15, 2026.
- Spot Price
- $63.39
- Call OI
- 111
- Put OI
- 25
- Total OI
- 136
As of May 15, 2026, State Street SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) has 136 total contracts outstanding across all expirations. Put/call OI ratio is 0.23 (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 SPMD open interest history Data Feeds Strategy Selection
Strategy selection on State Street SPDR Portfolio S&P 400 Mid Cap 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 24.6% 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 SPMD open interest history questions
- What is the current SPMD options open interest?
- As of May 15, 2026, State Street SPDR Portfolio S&P 400 Mid Cap ETF (SPMD) has 136 total contracts outstanding across all listed expirations, split as 111 calls and 25 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 SPMD put/call open interest ratio?
- Put/call OI ratio of 0.23 is call-heavy, often a directional bullish or upside-speculation signal.
- What does SPMD 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.