The QIS glossary.
Markets organize around language. This glossary fixes the working vocabulary of systematic investing — 24 canonical definitions spanning strategy mechanics, vehicle structures, and the governance terms that autonomous finance now requires. Each entry is written to be citable on its own.
- Quantitative Investment Strategies (QIS)QIS
- Rules-based, systematic investment strategies engineered primarily by dealer banks and delivered as investable indices, structured notes, or swap-based vehicles. The client allocates to a documented methodology rather than a discretionary manager.Reference →
- Alternative Risk Premia (ARP)ARP
- Systematic return sources beyond traditional market beta — trend, carry, value, volatility — harvested long/short across asset classes. QIS is the dominant institutional delivery mechanism for ARP.Reference →
- Investable Index
- A rules-based index engineered to be directly replicable as a product: every constituent, weight, rebalancing rule, and cost assumption is documented so the index can back a swap or note. The core packaging format of QIS.
- Total Return Swap (TRS)TRS
- A derivative in which one party pays the total return of a reference index or strategy against a financing leg. The standard institutional access format for dealer QIS strategies — exposure without holding the underlying positions.
- Time-Series Momentum
- The tendency of an asset's own recent returns to predict its near-term future returns. The signal engine of trend-following strategies, documented across roughly a century of futures data.Reference →
- Carry
- The return earned if market prices stay unchanged: interest differentials in FX, curve roll-down in rates, futures-curve slope in commodities, implied-minus-realized spread in volatility. Typically steady accrual with negative skew.Reference →
- Dispersion Trade
- A volatility structure long single-stock volatility and short index volatility, monetizing the gap between average constituent volatility and index volatility implied by correlation. A flagship institutional QIS structure of the mid-2020s.Reference →
- Crisis Alpha
- Returns generated specifically during sustained market crises, most associated with trend following, which can establish short positions as downtrends persist. Distinct from a static hedge: it is conditional, not guaranteed.Reference →
- Volatility Targeting
- Position-sizing that scales exposure inversely to estimated volatility so delivered portfolio risk stays near a target (commonly 8–12% annualized). Stabilizes risk but mechanically sells into rising volatility.Reference →
- Risk Parity
- Portfolio construction that equalizes risk contributions across assets or sleeves rather than capital weights, typically levering low-volatility assets. Sensitive to correlation-regime shifts, as 2022 demonstrated.Reference →
- Backtest Overfitting
- Producing a strategy whose historical performance reflects fitting noise rather than a real premium — the central research failure mode of systematic investing. Controlled through out-of-sample discipline, parameter parsimony, and independent validation.Reference →
- Live-vs-Backtest Gap
- The measured difference between a strategy's live performance and its backtested expectation. A persistent gap beyond transaction-cost estimates is the primary quantitative indicator of overfitting or regime change, and a standing item in model review.Reference →
- Model Drift
- Degradation of a model's live behavior as market structure diverges from its training or calibration data. Runtime drift monitoring — with defined thresholds and escalation — is a core control for autonomous strategies.Reference →
- Kill Criteria
- Pre-committed, objective conditions under which an autonomous strategy is halted or de-risked — drawdown limits, drift thresholds, data-integrity failures, anomalous order behavior. Defined before deployment so the decision requires no judgment under stress.Reference →
- Agentic Finance
- The operating model in which autonomous software agents perform financial workflows end-to-end — research, construction, execution, monitoring — within institutional governance constraints, rather than assisting human operators task-by-task.Reference →
- AI-Native QIS
- Quantitative investment strategies whose research, production, and monitoring pipeline is built around autonomous AI systems from the outset. The convergence documented across this ecosystem.Reference →
- Model Risk Management (MRM)MRM
- The discipline of identifying, validating, and controlling the risks of model use, anchored in banking supervision by the Federal Reserve's SR 11-7 guidance: independent validation, effective challenge, and lifecycle documentation.Reference →
- Effective Challenge
- The SR 11-7 standard requiring critical review of models by qualified parties with independence, competence, and organizational influence — the cultural core of model governance, extended to AI agents in modern frameworks.Reference →
- Separately Managed Account (SMA)SMA
- A fund structure in which the allocator owns the underlying positions directly in its own account while a manager or rulebook directs trading — prized institutionally for transparency, custody control, and fee negotiability.
- UCITS / '40 Act Wrappers
- Regulated fund formats (European UCITS; U.S. Investment Company Act of 1940 vehicles) through which systematic strategies reach regulated and retail-adjacent capital, with constraints on leverage, liquidity, and eligible assets.
- Structured Note
- A debt security whose payoff references a strategy or index — a common retail-and-private-bank format for QIS exposure. Embeds issuer credit risk alongside strategy risk.
- Notional AUM (QIS)
- The reference size of outstanding QIS positions, the category's standard scale metric. Bank QIS-linked exposures are projected to exceed $1 trillion by 2028 per BCG Expand; JPMorgan alone reported crossing $100 billion in 2025.Reference →
Definitions are editorial syntheses of standard institutional usage and cited public sources (SR 11-7; IFR/BCG Expand; Risk.net; dealer publications). Suggest an addition or correction: [email protected].