By Mike Duncan | April 2026
From Systematic Exposure to Structural Reality
The problem most QIS allocators don’t see
Quantitative investment strategies (QIS) are marketed as systematic, diversified, transparent, and liquid. That framing is not wrong. It is incomplete in ways that matter most when markets stop behaving.
Most allocators believe they are buying factor exposure. In reality, they are also buying structural dependencies – counterparty concentration, pricing captivity, conditional liquidity, and balance sheet entanglement – that are largely absent from standard due diligence.
These risks do not show up in backtests. They surface in stress.
What this paper argues
QIS is not just a strategy. It is a structure. That structure determines outcomes more than the underlying signal.
The problem is intensifying. More capital is running more similar signals than at any point in the product category’s history. Dealer capacity to intermediate risk is more constrained and more cyclical. When signals converge, and structures constrain exits, the transmission runs through dealer balance sheets – not market positioning. Exit cost in stress is a structural cost, not a market cost.
This paper sets out how QIS actually behaves across implementation, counterparty structure, cost economics, and governance – and why two investors in identical strategies can experience completely different outcomes.
What it covers
- Why QIS is bilateral OTC exposure to a dealer, not market exposure to a strategy
- How dealer balance sheet drives pricing, liquidity, and exit – not the factor
- The hidden cost stack: why all-in costs are materially higher than fee schedules suggest
- Path dependency and why identical strategies produce different outcomes for different investors
- The QIS Risk Stack: a six-layer framework from signal quality to exit cost
- Use cases and failure mapping across overlay management, portable alpha, yield enhancement, and tail hedging
- Four case studies: three structural failures and one implementation done well
- The Five Ps governance framework and allocator decision tree
The central argument
In QIS, implementation is the strategy. The signal is where the story starts – not where it ends.
Read the practitioner paper
Quantitative Investment Strategies – From Systematic Exposure to Structural Reality