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I noticed a lot of bearish pressure coming from the options market on $RIO. Check out this order imbalance! -179 K option volume delta. What is option volume delta?
Unusual Option Volume

RIO Rio Tinto PLC98.32-2.90 (-2.9%)

Rio Tinto PLC trades 6,944 contracts.
Unusual Option Volume

RIO Rio Tinto PLC100.97+1.96 (+2.0%)

Rio Tinto PLC trades 7,302 contracts.
Unusual Option Volume

RIO Rio Tinto PLC98.77+2.87 (+3.0%)

Rio Tinto PLC trades 2,082 contracts.
Unusual Option Volume

RIO Rio Tinto PLC96.06+2.40 (+2.6%)

Rio Tinto PLC trades 3,955 contracts.
Unusual Option Volume

RIO Rio Tinto PLC90.42+1.35 (+1.5%)

Rio Tinto PLC trades 3,408 contracts. The highest volume is in the 21-Aug-26 80 puts.
Market Data Delayed 15 Minutes