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2026-07-02
How Do Market Makers Make Money? Real Spread Data
What market makers do and how they earn the bid-ask spread — with real tick data: measured spreads, quote updates per second, and the SQL behind every number.
Strasmore Research
Educational explainers, recurring market-structure breakdowns, and historical deep-dives — every number sourced from a stored query against real market data.
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2026-07-02
What Is a Bid-Ask Spread? Real Costs, Real Market Data
Learn what a bid-ask spread is, how to calculate it, and what it costs per trade — with real spreads measured from tick-level quote data on US stocks.