SkillsLib.ai

Long/Short Thesis Validation Framework

Validate long/short investment theses with quantitative screens and catalyst mapping

4.2(15 reviews)
100+ downloads
Updated Oct 2026
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What You Can Do

You can decompose long and short theses into measurable components—catalyst specificity, quantitative resilience across macro regimes, narrative robustness, and correlation assumptions—then validate each independently. This framework catches thesis deterioration, false signals, and correlation breaks before they destroy P&L, ensuring both legs of your long/short strategy remain defensible through market cycles.

Features

Catalyst Mapping

Identify named catalysts with explicit probability estimates and timing windows for long and short legs

Quantitative Resilience Testing

Stress thesis across macro regimes, valuation ranges, peer comparables, and liquidity scenarios

Narrative Stress Testing

Subject thesis to adversarial questioning from institutional skeptics to identify blind spots and narrative drift

Correlation Assumption Validation

Explicitly test why long and short positions move in opposite directions under different market conditions

Thesis Decay Detection

Quarterly review checklist to catch deterioration in catalyst timing, fundamental assumptions, or macro alignment

Risk Decomposition

Break thesis into independent sources of alpha (fundamental, technical, macro, liquidity) to weight conviction appropriately

Position Sizing Framework

Use validated thesis components to allocate capital between long and short legs based on measured resilience

Due Diligence Readiness

Pre-built investor challenge responses and risk committee presentation templates

Example Output

Example 1: Long Thesis Validation Output

Thesis: XYZ Inc. (long) outperforms due to market-share capture in AI infrastructure

  • Catalyst: Q4 earnings beat ≥15% revenue growth (65% probability, 45 days)
  • Quantitative: Holds at 12-16x EV/Sales even if macro growth slows 2% YoY
  • Narrative weak point: Competitor ABC has 30% gross margin vs. XYZ's 25%—thesis requires margin expansion via scale, not just revenue
  • Correlation: Long gains if AI capex accelerates; breaks if sector enters commodity pricing

Example 2: Short Thesis Validation Output

Thesis: DEF Corp. (short) underperforms due to debt refinancing risk

  • Catalyst: Q2 earnings + guidance cut on rising rates (72% probability, 60 days)
  • Quantitative: Thesis fails if rates drop 75bps or company refinances at <4% (downside scenarios: 15% probability)
  • Narrative resilience: Management may cut dividend or capex to improve liquidity—limits downside
  • Correlation: Short gains if rates rise or credit spreads widen; thesis breaks if sector sees M&A bid

What's Included

  • SKILL.md instruction file with thesis decomposition methodology:
  • Long/Short Validation Worksheet: structured template for documenting catalysts, quantitative screens, and narrative stress tests for each leg
  • Catalyst Probability Tracker: timeline and confidence estimation framework for named events
  • Quarterly Thesis Decay Checklist: early warning signals for deteriorating convictions
  • Risk Committee Presentation Template: investor-ready thesis summary with adversarial Q&A prep

Who It's For

  • Hedge fund analysts and portfolio managers running long/short equity strategies requiring dual-leg conviction
  • Long/short hedge fund GPs and LPs evaluating thesis quality and risk committee approval processes
  • Investment committee members assessing position resilience and catalyst alignment before capital allocation
  • Multi-strategy fund managers rotating between long and short exposures within sector allocations
  • Institutional investors conducting due diligence on long/short fund managers' thesis rigor

Best For

  • Position initiation — validating new long or short ideas before committing capital
  • Quarterly thesis reviews — catching signal decay and correlation assumption breaks in existing positions
  • Portfolio hedging — testing whether long/short pairs actually move in opposite directions during stress scenarios
  • Risk committee presentations — preparing defensible thesis documentation for board or LP scrutiny
  • Earnings/catalyst season preparation — stress-testing thesis resilience ahead of key events

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