Peer-Relative Breakdown Strategy by cpbecton

By cpbecton

Performance Metrics

Description

he intuition (what’s actually happening)Think about how capital flows work.When institutions start losing conviction in a name, they usually don’t immediately dump it outright. What happens first is:they rotate within the sectorthey shift into stronger peersthey reduce marginal buyingSo the stock:may still go upbut it goes up less than its peersThat is the earliest detectable signal of deterioration.This model is built specifically to isolate that.What the math is doing (in plain terms)Step 1: Strip out the sector moveYou compute:Relative Spread=Stock Return−ETF ReturnRelative Spread=Stock Return−ETF ReturnSo if:stock = +4%ETF = +10%Then:Spread=−6%Spread=−6%That tells you:“Even though the stock is up, it is underperforming its peers materially.”This removes:market directionsector betamacro noiseWhat remains is:pure relative performanceStep 2: Normalize by volatilityNot all -6% moves are equal.If a stock normally moves ±10%, that’s nothing.If it normally moves ±2%, that’s huge.So you standardize:𝑍=SpreadVolatility of SpreadZ=Volatility of SpreadSpread​Now you are measuring:“How unusual is this underperformance relative to its own history?”This is the key step.Because now:you’re not just detecting weaknessyou’re detecting statistically meaningful weaknessStep 3: Convert to a usable scoreYou transform that into a bounded score:𝑆𝑐𝑜𝑟𝑒=50−(𝑍×𝑠𝑐𝑎𝑙𝑒)Score=50−(Z×scale)So:Score ~50 → normal behaviorScore rising above 50 → increasing underperformanceScore >70 → significant deteriorationScore 𝐸𝑀𝐴(50)Price>EMA(50)Why?Because:relative improvement inside a downtrend is often meaninglessyou want confirmation that absolute demand has returnedWhy this helps detect deterioration earlyBecause deterioration typically unfolds like this:Phase 1 (early)stock lags peersstill looks fine on its own chartyour score starts risingPhase 2 (mid)score moves above 50 → then 60+relative weakness becomes persistentinstitutions are rotating awayPhase 3 (late)price breaks downeveryone sees itedge is goneThis model is designed to catch Phase 1 → Phase 2 transition.How to interpret it in practice1. Healthy / Strong (70)statistically meaningful weaknesslikely tied to:earnings revisionspositioning unwindfundamental shiftThis is your exit zone.When to get out (this is the key part)The model gives you a structured way to exit without guessing.Primary exit signalScore crosses above 70Score crosses above 70Interpretation:“This is no longer noise. This is a real breakdown relative to peers.”That is your hard exit.Earlier risk management (before full exit)You don’t need to wait for 70.You can manage risk like this:50–60 → stop adding60+ → trim70+ → exitThat creates a graduated response, not all-or-nothing.Re-entry logicYou don’t just buy when price goes up.You require:Score crosses below 35 AND price > trendScore crosses below 35 AND price > trendThat means:relative strength has returnedand absolute trend confirms itSo you are buying:stocks that are re-accelerating vs peers, not just bouncingWhy this works (when it does)Because it captures something most indicators don’t:relative capital allocation shiftsPrice indicators:tell you what already happenedThis:tells you where money is going (or leaving)That’s earlier, and often more actionable.Where it can failIt’s important to be honest here.This will struggle when:1. Sector is very strongstock lags slightlyscore risesbut stock still performs fine2. Sector definition is imperfectETF doesn’t match true peer setsignal becomes noisy3. Sideways marketsrelative performance oscillatescreates false signalsThe correct way to use itThis is not a standalone “buy/sell system.”It is best used as:a position management toola relative strength filtera way to identify:hidden weaknessearly deteriorationlaggards in strong sectors

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