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Oliver Buchannon
Marcus Holt

Former forex broker, now full-time trader. Writing about how brokers actually work. Execution, pricing, and the mechanics retail traders never see.

Prop Firm Mechanics

The challenge fee is the product
LockSimple

Jul 9, 2026

•

4 min read

The challenge fee is the product

Marcus Holt
Marcus Holt
The 7-point broker audit
LockSimple

Jul 2, 2026

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4 min read

The 7-point broker audit

Marcus Holt
Marcus Holt
Withdrawals: the compliance layer no one talks about until they need it

Jun 25, 2026

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5 min read

Withdrawals: the compliance layer no one talks about until they need it

Marcus Holt
Marcus Holt
News Execution: The First 500 Milliseconds
LockSimple

Jun 18, 2026

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3 min read

News Execution: The First 500 Milliseconds

Marcus Holt
Marcus Holt
Stop Loss Mechanics

Jun 11, 2026

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3 min read

Stop Loss Mechanics

Marcus Holt
Marcus Holt
The Liquidity Stack: Banks, Aggregators, Non-Bank LPs

Jun 4, 2026

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4 min read

The Liquidity Stack: Banks, Aggregators, Non-Bank LPs

Marcus Holt
Marcus Holt
The Profile Score: How Brokers Decide What to Do With Your Flow

May 28, 2026

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4 min read

The Profile Score: How Brokers Decide What to Do With Your Flow

Marcus Holt
Marcus Holt
A-Book, B-Book, and the Flow Profiler
LockSimple

May 21, 2026

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5 min read

A-Book, B-Book, and the Flow Profiler

Marcus Holt
Marcus Holt
Slippage Is a Feature, Not a Bug
LockSimple

May 14, 2026

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3 min read

Slippage Is a Feature, Not a Bug

Marcus Holt
Marcus Holt
The Rent Clause: How Brokers Build the Overnight Swap
LockSimple

May 7, 2026

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3 min read

The Rent Clause: How Brokers Build the Overnight Swap

Marcus Holt
Marcus Holt
The spread is not what you think it is

Apr 30, 2026

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3 min read

The spread is not what you think it is

Marcus Holt
Marcus Holt

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