ProShares - Short MidCap400 (MYY) Gamma Exposure (GEX) & Greeks
Gamma exposure (GEX) analysis shows how options positioning creates dealer hedging pressure across strikes. Includes delta, vanna, charm, vomma, and vega exposure by strike price.
ProShares - Short MidCap400 (MYY) operates in the Financial Services sector, specifically the Asset Management - Leveraged industry, with a market capitalization near $2.7M, listed on AMEX, carrying a beta of -1.05 to the broader market. ProShares Short MidCap400 seeks daily investment results, before fees and expenses, that correspond to the inverse (-1x) of the daily performance of the S&P MidCap 400. public since 2006-06-21.
Snapshot as of May 15, 2026.
- Spot Price
- $16.05
- Net Gamma
- $162
- Net Delta
- -$3.0K
- Net Vega
- -$12
- Gamma Concentration
- 0.37
As of May 15, 2026, ProShares - Short MidCap400 (MYY) has positive net gamma exposure of $162 under the standard dealer-hedging convention. Net delta exposure is -$3.0K. Positive GEX means dealers are net long gamma: they buy into dips and sell into rallies, damping realized volatility and often causing price to pin near heavy open-interest strikes.
MYY Strategy Sizing in the Current GEX Regime
ProShares - Short MidCap400 is in a positive dealer-gamma regime ($162). Net dealer delta of -$3.0K sets the size of the directional hedging flow that fires as spot moves. In this regime, mean-reverting strategies fit the regime: credit spreads, iron condors, covered calls near established ranges. Realized volatility tends to undershoot implied during positive-gamma stretches, supporting the short-vol structures. The gamma-flip level - the spot price at which net dealer gamma changes sign - is the most actionable anchor for sizing: through-flip moves trigger qualitatively different hedging behavior than within-regime moves, so risk-defined structures sized to the current spot may not stay sized correctly if a flip is near.
Learn how gamma exposure is reported and how to read the data →
Frequently asked MYY gamma exposure (gex) & greeks questions
- What is the current MYY gamma exposure (GEX)?
- As of May 15, 2026, ProShares - Short MidCap400 (MYY) net gamma exposure is positive at $162 under the standard dealer-hedging convention. Net dealer delta exposure is -$3.0K. GEX aggregates the gamma sitting on dealer books across all listed strikes and expirations.
- Is MYY in positive or negative dealer gamma right now?
- MYY is currently in positive dealer gamma. Dealers net long gamma buy underlying weakness and sell into rallies to maintain delta-neutrality, which dampens realized volatility and tends to pin price near heavy open-interest strikes.
- What does MYY GEX tell options traders?
- GEX is a regime indicator: positive-gamma regimes favor mean-reverting strategies (premium-selling near established ranges); negative-gamma regimes favor momentum and breakout strategies. The same options-strategy structure can be appropriate or inappropriate depending on the dealer-gamma regime, so reading the sign and magnitude of net GEX before sizing positions is standard practice.