{"slug":"what-is-a-bid-ask-spread","qid":"spread_by_ticker","label":"Typical quoted spread: six liquid names vs. two thin small caps, with the 100-share cost","post_title":"What Is a Bid-Ask Spread? Real Costs","post_url":"/blog/what-is-a-bid-ask-spread#q-spread_by_ticker","columns":["ticker","typical_spread_cents","typical_spread_bps","spread_cost_100_shares"],"rows":[{"ticker":"SPY","typical_spread_cents":2,"typical_spread_bps":0.3,"spread_cost_100_shares":"2.00"},{"ticker":"AAPL","typical_spread_cents":3,"typical_spread_bps":0.9,"spread_cost_100_shares":"3.00"},{"ticker":"NVDA","typical_spread_cents":2,"typical_spread_bps":0.9,"spread_cost_100_shares":"2.00"},{"ticker":"MSFT","typical_spread_cents":8,"typical_spread_bps":1.7,"spread_cost_100_shares":"8.00"},{"ticker":"KO","typical_spread_cents":1,"typical_spread_bps":1.1,"spread_cost_100_shares":"1.00"},{"ticker":"TSLA","typical_spread_cents":7,"typical_spread_bps":2.1,"spread_cost_100_shares":"7.00"},{"ticker":"NATH","typical_spread_cents":65,"typical_spread_bps":66.3,"spread_cost_100_shares":"65.00"},{"ticker":"SENEA","typical_spread_cents":170,"typical_spread_bps":88.4,"spread_cost_100_shares":"170.00"}],"shape":"ranking","sql":"SELECT ticker,\n       round(median_spread_usd * 100, 1) AS typical_spread_cents,\n       round(median_spread_bps, 1) AS typical_spread_bps,\n       toDecimalString(median_spread_usd * 100, 2) AS spread_cost_100_shares\nFROM (\n    SELECT ticker,\n           quantileDeterministic(0.5)(toFloat64(ask_price - bid_price), toUInt64(sip_timestamp)) AS median_spread_usd,\n           quantileDeterministic(0.5)(toFloat64(ask_price - bid_price) / (toFloat64(ask_price + bid_price) / 2), toUInt64(sip_timestamp)) * 10000 AS median_spread_bps\n    FROM global_markets.cache_stocks_quotes\n    WHERE ticker IN ('SPY', 'AAPL', 'NVDA', 'MSFT', 'KO', 'TSLA', 'NATH', 'SENEA')\n      AND sip_timestamp >= now() - INTERVAL 7 DAY\n      AND bid_price > 0\n      AND ask_price > bid_price\n    GROUP BY ticker\n)\nORDER BY indexOf(['SPY', 'AAPL', 'NVDA', 'MSFT', 'KO', 'TSLA', 'NATH', 'SENEA'], ticker)","computed_at":"2026-08-22T04:33:00.094029+00:00","elapsed":5.873494138}