The archive

Every essay, by theme

The full run of Trades Reconstructed, grouped by theme and ordered newest first, with series kept together in sequence.

Market manipulation by machines

A three-part series

market manipulation · part 1

When the rogue actor is itself a model

Market manipulation and collusion require intent. An autonomous trading model can reach the same pattern with none of it, and the offense, as written, finds nothing to charge. Part 1 of three on market manipulation by machines.

August 9, 2026

market manipulation · part 2

When the reason cannot be read

The trade record reconstructs what happened and can establish an artificial price, but not why an autonomous model acted. The failure of causation, and the runtime answer taking shape. Part 2 of three.

August 9, 2026

market manipulation · part 3

When the evidence is a simulation

The studies behind the series, in pictures: how a reward shapes a trading agent, and how autonomous agents have been made to collude with no agreement between them. Part 3 of three.

August 9, 2026

Surveillance

5 essays

surveillance

Provable and unprovable: why insider dealing slips the net

Insider dealing is the most flagged market-abuse offense in the EU and the least sanctioned. Why the order book cannot prove intent, where the evidence leaks, and the three court-tested moves that answer off-channel evasion.

August 2, 2026

surveillance

What the numbers can and can't prove

The metrics that flag market manipulation describe behavior, not intent: each has a legitimate twin that produces the same signature. Why the number surfaces a suspect but only reconstruction proves a case, traced through US and UK enforcement.

July 30, 2026

surveillance

Why trade surveillance produces false positives

Most surveillance alerts are false positives, and the same calibration choices that produce them can let genuine abuse pass unexamined. A plain account of why, drawn from the regulators of the United States, Europe, and Singapore.

July 29, 2026

surveillance

One region, many rulebooks: market-abuse surveillance across Asia

Market-abuse surveillance shares a reference frame built in Brussels and Washington, but five Asian markets each write their own rulebook. Where India, Korea, Australia, Singapore, and Hong Kong diverge, and why reconstruction multiplies across borders.

July 19, 2026

Best execution

1 essay

best execution

The report nobody read

European regulators have repealed the reports firms once used to disclose best execution. This traces what replaced them, how the American and British models compare, and whether the duty itself has actually grown more subjective.

July 8, 2026

Market structure

1 essay

market structure

When the benchmark becomes the rule

The proposal to rescind the trade-through rule removes the mechanical test at the center of equity routing. What remains is best execution, measured against benchmarks and shown through the record.

July 6, 2026