Stage 3Market Mastery• 8 min read
CLV Durability & Edge Decay
How edges change over time and why CLV matters
You should read this if:
You're betting seriously and need to understand the structural realities of the market.
Prerequisites: CLV
What Is This?
Closing Line Value (CLV) is the difference between your bet price and the closing line. Positive CLV over time is the best predictor of long-term profit. But edges decay as markets get smarter and competitors catch on.
How It Works
| Aspect | Explanation | Implication |
|---|---|---|
| CLV as indicator | Beating closing lines = having edge | Track CLV, not just wins |
| Edge decay | Markets incorporate information faster over time | Yesterday's edge may not work tomorrow |
| Competition | More sharps = faster edge decay | Easy edges disappear first |
| Adaptation | Books get better at pricing | Props may become as efficient as spreads |
Reality Check
- •Positive CLV is the best success metric
- •Edges that worked 2 years ago may not work now
- •You must constantly evolve your approach
- •Some edges are structural and last longer
Example: The Decaying Edge
You found an edge in NBA prop openers - lines were soft at open and moved 3% on average. Your CLV: +5%. Two years later, openers are sharper, CLV dropped to +1.5%.
Outcome:
Edge decayed but didn't disappear. You adapted by finding new angles within the same market.
What to Do
- ✓Track CLV for all your bets
- ✓Monitor if your CLV is declining over time
- ✓Continuously look for new edge sources
- ✓Accept that some edges will expire
What to Avoid
- ⚠️Don't assume past CLV predicts future CLV
- ⚠️Don't rely on a single edge forever
- ⚠️Don't ignore declining CLV trends
Key Takeaways
- ✓CLV is the true measure of skill
- ✓Edges decay - continuous improvement required
- ✓Diversify edge sources to stay ahead
How DMP Helps
DMP tracks opening vs closing lines so you can measure your CLV over time.