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ProShares UltraShort NASDAQ Biotechnology BIS 11.53 -0.26 -2.24%

BIS Gamma Exposure (GEX)

BIS (ProShares UltraShort NASDAQ Biotechnology): See how call and put gamma exposure is distributed across option strikes. Free delayed preview.

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ATM IV
0.725
Put Call Ratio (OI)
0.364
Put Call Ratio (Vol)
0.75
IV Rank
5.34
IV Percentile
46
Max Pain
16

Gamma exposure (2026-09-21)

GEX estimates dealer hedging flow at each strike.

Positive GEX = dealers are long gamma; they buy the dip and sell the rip, dampening volatility. Negative GEX = dealers are short gamma; they sell the dip and buy the rip, amplifying volatility.

DTE \text{DTE}
25.0
242.0
| Δ | |\Delta|
0.00
1.00
Moneyness Moneyness
-18.5
18.5
View values by strike
BIS · Gamma exposure · 2026-09-21. USD of exposure per 1% underlying move.
StrikeCallsPuts
11.00 0 -14.1
13.00 12.3 0
14.00 12.6 0
15.00 23 0
16.00 38.7 -14.9
17.00 50.5 0
19.00 13.6 -8.74
20.00 25 -2.81
21.00 28.9 -12.9
22.00 10.7 -4.62
23.00 10.1 0
24.00 4.76 0