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simons-quant

Use when evaluating Jim Simons / Renaissance-style quantitative strategies: many weak signals, statistical validation, signal decay, portfolio construction, execution cost, and model risk.

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  • SKILL.md1.7 KB
  • invest.md7.5 KB

SKILL.md (original)

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Simons Quant

Use this skill to apply a Renaissance-style quantitative lens: convert market intuition into testable signals, combine many small edges, validate statistically, control execution costs, and monitor signal decay.

When To Use

  • Quant strategy design or review
  • Signal research, factor testing, and backtest critique
  • Statistical arbitrage and many-small-edges portfolio thinking
  • Whether a trading rule is robust or overfit

Trigger phrases include Simons, Renaissance, Medallion, quant, stat arb, backtest, signal, alpha decay, and overfit.

Process

  1. Translate the hypothesis into measurable signals.
  2. Define universe, holding period, costs, and data availability.
  3. Test out-of-sample and across regimes.
  4. Combine weak signals into a portfolio rather than relying on one story.
  5. Model execution cost, capacity, turnover, and slippage.
  6. Monitor decay and shut down signals that stop working.

Output Format

# Simons Quant View: [Strategy]

## Verdict
Research / Paper Trade / Deploy Small / Reject / Overfit

## Hypothesis
## Signal Definitions
## Validation Plan
## Portfolio Construction
## Execution And Capacity
## Failure Modes

Guardrails

  • Do not trust in-sample backtests.
  • Do not ignore transaction costs.
  • Do not confuse correlation with durable edge.
  • Do not deploy before data leakage checks.

Questflow Use

In Questflow, this skill is best used as a signal-research and systematic-strategy review module.

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