Upstream Bio, Inc. (UPB) Gamma Exposure
Net dealer gamma exposure in Upstream Bio, Inc. (UPB) options is $3.86K — dealers are net long gamma. Gamma exposure (GEX) estimates how much market makers must re-hedge as UPB moves. This page maps that exposure strike by strike, marks the gamma flip level, and explains what the hedging pressure means for price behavior in plain English.
Data as of Aug 24, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
UPB Gamma Exposure by Strike
| Net gamma exposure (GEX) | $3.86K |
| Net delta exposure | 2.83K |
| Total call open interest | 72 |
| Total put open interest | 19 |
Net dealer gamma exposure is $3.86K. When dealers are long gamma they sell into rallies and buy dips to stay hedged, which tends to dampen price swings. The single largest gamma concentration sits at the $5 strike, which often acts as a magnet or barrier while dealers hedge around it.
UPB Net GEX History
UPB net dealer gamma exposure, past year.
Net dealer gamma exposure has fallen from $18.8K in Feb '26 to $3.9K today.
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UPB Options FAQ
What is UPB's gamma exposure (GEX) today?
UPB's net dealer gamma exposure is $3.86K as of Aug 24, 2026. Positive GEX means dealer hedging leans against the market — selling rallies and buying dips — which tends to dampen swings.
How is UPB gamma exposure calculated?
OptiView multiplies each open UPB contract's gamma by its open interest, contract size, and the square of the share price, counting calls as positive and puts as negative dealer exposure. Summing across all strikes and expirations gives net GEX; the per-strike breakdown is shown in the chart above.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.