Market Structure
Where the edge actually lives in fragmented venues
29 May 2026 · 11 min read
Published research from the Rockford & Ellington desk. For private and institutional clients. This note is commentary, not investment advice.
Liquidity has not disappeared. It has scattered. A look at how cross-venue dislocation creates the windows our execution desk is built to capture.
Ask most traders for the price of a major currency pair and they will name a single number. That number is a convenience, not a fact. At any instant the same instrument is quoted at marginally different prices across every venue that trades it, and those differences open and close thousands of times a second.
Most of that movement is noise: spreads too thin to act on once you account for the cost of acting. But a fraction of it is real, a dislocation wider than the round trip required to close it. Capturing that fraction is not glamorous. It is plumbing, latency, and discipline, applied relentlessly.
Our execution desk treats the venue set as a single continuous book rather than a list of places to shop. The engine prices all of them at once and acts only when the edge survives costs. The client never sees the machinery. They see a cleaner fill and a tighter effective spread, which is the only part that matters.
Fragmentation is often described as a problem. For a desk built to read it, fragmentation is the opportunity.
A single screen price is a fiction the market agrees to tell you. The real price is a cloud, and the edge is in its width.
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