{"slug":"does-opra-have-depth-of-book","qid":"chain_breadth","label":"Contracts in the chain versus contracts that traded (Sep 16, 2026)","post_title":"Does OPRA Have Depth of Book? Feed Explained","post_url":"/blog/does-opra-have-depth-of-book#q-chain_breadth","columns":["symbol","contracts_in_chain","contracts_traded"],"rows":[{"symbol":"SPY","contracts_in_chain":5616,"contracts_traded":5616},{"symbol":"QQQ","contracts_in_chain":4522,"contracts_traded":4522},{"symbol":"MU","contracts_in_chain":4076,"contracts_traded":4076},{"symbol":"AMD","contracts_in_chain":3025,"contracts_traded":3025},{"symbol":"META","contracts_in_chain":2891,"contracts_traded":2891},{"symbol":"GLD","contracts_in_chain":2845,"contracts_traded":2845},{"symbol":"SNDK","contracts_in_chain":2377,"contracts_traded":2377},{"symbol":"TSLA","contracts_in_chain":2371,"contracts_traded":2371},{"symbol":"USO","contracts_in_chain":2069,"contracts_traded":2069},{"symbol":"SOXL","contracts_in_chain":1972,"contracts_traded":1972},{"symbol":"NVDA","contracts_in_chain":1959,"contracts_traded":1959},{"symbol":"IWM","contracts_in_chain":1897,"contracts_traded":1897}],"shape":"ranking","sql":"SELECT\n    underlying_symbol                   AS symbol,\n    countDistinct(ticker)               AS contracts_in_chain,\n    countDistinctIf(ticker, volume > 0) AS contracts_traded\nFROM global_markets.options_greeks\nWHERE date = '2026-09-16'\n  AND underlying_symbol NOT IN ('SPCX')\nGROUP BY symbol\nORDER BY contracts_in_chain DESC\nLIMIT 12","computed_at":"2026-10-08T15:25:26.546778+00:00","elapsed":0.003520257}