How to choose a quant strategy by risk budget

Short answer: Decide how much loss and volatility the account can carry, then choose strategies that fit capital thresholds, drawdown tolerance, and operating conditions. Historical return should be one of the last comparisons, not the first.

What is a risk budget?

A risk budget is not a plan to lose money. It is a pre-defined limit on the uncertainty the account is willing to carry for a strategy. It may include:

• capital available for allocation;
• tolerable drawdown;
• daily or period loss boundaries;
• total risk after other strategies and positions;
• conditions that trigger a pause or exit.

Without a risk budget, recent performance can pull allocation higher at exactly the wrong time.

Step one: separate total assets from allocatable capital

Total assets are not automatically available to a new strategy. The account may also contain:

• capital assigned to other strategies;
• margin supporting positions;
• pending or restricted funds;
• reserves for withdrawals, safety, or other purposes.

Start with allocatable capital and keep capacity for abnormal movement.

Step two: translate drawdown into account impact

Suppose a strategy shows a historical maximum drawdown of 15%. That does not cap future drawdown at 15%, but it helps frame the exposure:

If $10,000 is allocated and a similar decline occurs, the mark-to-market fall is about $1,500. Can the account tolerate a worse outcome?

Do not use the historical maximum as a hard ceiling. New regimes, execution differences, and simultaneous strategy failure can produce larger losses.

Step three: similar strategies are not diversification

Different names do not make risks independent. Two strategies may both depend on trend, the same asset, the same session, or similar signals. They may draw down together when the regime changes.

Compare:

• traded assets and directions;
• holding periods;
• signal sources;
• regimes in which gains and losses occur;
• overlap with existing positions and strategies.

Step four: write pause conditions first

Define pause and reassessment conditions before the strategy starts:

• drawdown crosses an observation threshold;
• actual trade frequency diverges from the backtest;
• costs, slippage, or latency rise materially;
• the data source is interrupted or state cannot be confirmed;
• behavior no longer matches the original assumption.

A pause is a risk-control action, not an admission of failure.

A practical selection order

1. Confirm allocatable capital.
2. Set an account-level risk budget.
3. Remove strategies that fail the capital threshold.
4. Review period, drawdown, costs, and stability.
5. Compare correlation with existing risk.
6. Define pause, exit, and reassessment conditions.
7. Observe in simulation or paper mode before considering higher-permission environments.

Strategy selection in QANTERION

QANTERION keeps allocatable capital, strategy thresholds, backtests, and risk notes in one workflow. “Available” is therefore more than a button state; it is a result of account conditions and risk rules.

Before selecting, use the backtest checklist. For current modes and permissions, see the FAQ.