The 200-Day Moving Average as a PMCC Filter: What Two Decades of Evidence Tell Us

The 200-day moving average is the oldest piece of conventional wisdom in trend-following, and one of the most tested. It shows up in every textbook on technical analysis, every academic paper on time-series momentum, and almost every practitioner framework that claims to filter for regime. The reason it has stuck around is that it works in a specific and useful way, and the way it works has been stable across decades of market data.

For premium sellers running credit spreads or cash-secured puts, the 200-day filter has been part of our framework for a long time. It is one of the four signals in our composite ranking. But the case for the filter inside a PMCC structure is different, and in some ways stronger, than the case for it inside a pure premium-selling strategy. A poor man's covered call is not a delta-neutral trade. It is a directional position with a leveraged long leg and a short premium overlay. That structural asymmetry changes how the 200-day matters.

This piece walks through what the filter actually measures, why PMCC positions are uniquely sensitive to the regime it identifies, what the long-running research has shown about above-versus-below-200-day environments, and how to apply the filter in practice. The conclusion will not surprise anyone who has run the numbers. The point is to understand why.

What the 200-Day Filter Actually Measures

A 200-day simple moving average is not a forecast. It is a regime classifier. When price closes above the 200-day, the market is in one regime. When it closes below, it is in another. The filter does not tell us where price is going. It tells us which side of the dividing line price is currently on, and the two sides have historically behaved very differently.

Mebane Faber's 2007 paper on tactical asset allocation made this point in the cleanest way available. The work built on earlier research going back to the 1990s. Across multiple asset classes and multiple decades, the rule of being long when above the moving average and flat when below substantially reduced drawdowns without sacrificing long-run returns. The filter's value was not in capturing more upside. It was in avoiding the bulk of the downside.

That distinction matters for everything that follows. A PMCC trader is not trying to time exact tops and bottoms. The filter does not promise that. The filter promises that two regimes exist, that they look different, and that one of them is materially more dangerous than the other for a structure with long delta exposure.

Why PMCC Structures Are Uniquely Sensitive to Regime

A PMCC is built from two legs. A long LEAPS call, deep in the money, usually around 0.80 delta. And a shorter-dated short call, sold further out of the money against it. The combined position has a few characteristics worth naming carefully.

The position is long delta. Substantially long delta. A PMCC with a 0.80 delta LEAPS and a 0.30 delta short call carries roughly 0.50 net delta. That is half the directional exposure of owning 100 shares outright. When the underlying moves, the position moves with it.

The position is long vega, but in a complicated way. The LEAPS has more vega than the short call simply because it has more time on it. So when implied volatility expands, the LEAPS gains more than the short call loses. The catch is that vol expansion in equities almost always coincides with price falling. The vega gain helps. It does not save the position from the delta loss.

The position has a defined cost. The LEAPS premium is the upfront capital. Every short call sold against the LEAPS reduces the cost basis of the structure over time. The thesis is that if the underlying drifts higher or sideways, the short calls expire worthless or roll for additional credit, and the LEAPS appreciates. The position compounds.

The thesis breaks down in one specific scenario. The underlying enters a sustained downtrend, and the LEAPS loses value faster than the short calls can offset. The position's net delta keeps the trader on the wrong side of the move. Iron condors are vega-short and direction-neutral; they have their own failure modes, but a sustained downtrend is not the worst of them. A PMCC, by contrast, is structurally unsuited for a sustained downtrend. The math does not work.

This is why the 200-day filter matters more for PMCCs than for other premium-selling structures. It is the fastest, simplest way to identify the regime in which the structure is most vulnerable.

What Two Decades of Evidence Show About the Filter

The general research on the 200-day moving average filter is substantial and consistent. The findings have replicated across decades, across asset classes, and across slight variations in the moving-average length. The 10-month, 200-day, and 40-week filters all produce essentially the same result.

The pattern is clear enough to summarize in a few sentences. Equity returns when price is above the 200-day have historically been positive, with relatively muted volatility. Equity returns when price is below the 200-day have historically been roughly flat to negative, with materially elevated volatility. Drawdowns of more than 20 percent in major indices have, with very few exceptions, occurred while price was below the 200-day at the start of the major leg lower.

That last point is the one that matters most for a PMCC trader. The worst environments for a long-delta structure cluster in two scenarios. The first: the underlying is below the 200-day at the time the position is opened. The second: the underlying breaks below the 200-day mid-trade and stays there. The filter does not catch every loss. It catches the regime where losses cluster.

We are not citing a specific PMCC backtest here, because the published research on PMCC structures specifically is thin. What we have instead is a structural argument, supported by decades of equity-return evidence at the regime level. The PMCC inherits its underlying's directional risk. The underlying's directional risk is materially worse below the 200-day. Therefore the PMCC's directional risk is materially worse below the 200-day. The chain of reasoning does not require a custom backtest to be sound. It requires only that the equity-return evidence carries over to a long-delta structure on those same equities, which it does by construction.

How the Regime Translates to PMCC Outcomes

Picture a PMCC opened on a name above the 200-day, with reasonable IV Rank, with the LEAPS purchased at 0.80 delta. The underlying drifts higher over the next 90 days. The LEAPS gains delta and gains intrinsic value. The short call, sold at 0.30 delta against the LEAPS, expires worthless or is rolled at 50 percent profit for additional credit. The position is up. The cost basis is reduced. The structure is doing exactly what it was designed to do.

Now picture the same PMCC opened on a name below the 200-day. The underlying continues lower. The LEAPS loses value, both from delta and from the strike moving further out of the money. The short call, even if it expires worthless, generates only a small amount of premium relative to the LEAPS loss. The trader rolls the short call down, but rolling down on a falling stock means rolling into less premium and a tighter cushion. Each roll captures less than the previous one. The cost basis is not getting reduced fast enough to offset the LEAPS bleed.

The math does not care about the trader's conviction in the underlying. The math reflects the structure of the position. The PMCC works in regimes where the underlying does not fall hard. The 200-day filter is the simplest available way to bias the entry toward those regimes.

Two Worked Examples

Imagine a stock at 100 with the 200-day at 92. The LEAPS at the 80 strike with 12 months to expiration costs 22.50. The short call at the 110 strike with 45 days to expiration sells for 1.80. The position has cost 20.70 net.

Three months in, suppose the underlying has rallied to 108. The LEAPS is now worth roughly 30. The short call expired and was replaced; cumulative short-call credit has been 4.20. The position is worth 30 plus 4.20 in collected credit, against 20.70 cost. That is a return of roughly 65 percent on capital in three months. The structure compounded.

Now imagine the same trade structure opened on a stock at 100 with the 200-day at 108 (the stock is below its 200-day). The LEAPS at the 80 strike costs 22.50; the short call at the 110 strike sells for 1.80; net cost is 20.70.

Three months in, suppose the underlying has fallen to 88. The LEAPS at the 80 strike with nine months left is now worth roughly 12. The short calls all expired worthless and were replaced with rolls at lower strikes; cumulative short-call credit has been 3.60. The position is worth 12 plus 3.60 in collected credit, against 20.70 cost. That is a loss of roughly 25 percent on capital in three months.

These numbers are illustrative, not from a backtest. The point is structural. The same trade, with the same Greeks, with the same short-call discipline, produces a meaningfully positive outcome in one regime and a meaningfully negative outcome in the other. The regime was identifiable in advance, by checking whether the underlying was above or below the 200-day.

When to Use the Filter and When to Override It

The 200-day filter is a default, not a law. There are three situations where overriding it is reasonable, and one where it is not.

Override is reasonable when the underlying has just crossed below the 200-day on weak volume after a long uptrend, and the cross is shallow. A 1 percent break is not the same as a 12 percent break. The filter is most powerful when the underlying is meaningfully and convincingly below the moving average.

Override is reasonable when the underlying is in a known, identifiable bottoming pattern with high IV Rank and a clear catalyst. Buying a LEAPS into a fear spike, with the short call providing an income stream against it, can work even when the 200-day is overhead. The trade is being run as a counter-trend recovery position, not as a standard PMCC, and it should be sized smaller.

Override is reasonable inside the All-Weather sub-portfolio. It applies for names where the long-term thesis is durable and the 200-day cross reflects a temporary macro shock, not a deterioration in the business. KO below the 200-day during a Fed-driven sector rotation is not the same as KO below the 200-day on a fundamental change.

The override that is not reasonable is the one taken because the trader wants to be in a position. That is the most expensive override there is. The 200-day filter exists to discipline the trader against exactly that impulse. Setting it aside without an explicit, defensible reason is the path to learning the filter's value the hard way.

The Risk Management Overlay for Existing PMCCs

The filter applies at entry. It also applies during the trade. Consider a PMCC opened above the 200-day. If the underlying subsequently breaks below the line and closes there, the position has lost the regime support it was opened with.

The framework's response is not automatic exit. A break below the 200-day is not by itself a reason to close. It is a reason to evaluate. The questions to ask are familiar: how much capital is left in the position, how much cushion does the LEAPS still provide, how much premium has been collected against the cost basis, and how does the broader macro overlay look.

If the LEAPS has held up well and the broader market is also stressed, holding may be reasonable. If the LEAPS has broken down and the underlying's chart shows a decisive break, taking the loss and redeploying capital to a name in a better regime is usually the right call. The discipline that compounds over a career is the willingness to take a loss when the regime supporting the position has changed.

Key Takeaways

The 200-day moving average is a regime classifier, not a forecast. Its long history of research support is grounded in the fact that two regimes exist, and they look very different.

PMCC structures are uniquely sensitive to regime because they carry substantial long delta and bleed in sustained downtrends. The filter biases entries toward the regime in which the structure works as designed.

The illustrative math is the cleanest demonstration. The same trade in two regimes produces meaningfully different outcomes. The regime is identifiable in advance.

Overrides are sometimes reasonable. The override taken without an explicit reason is the one that costs.

For existing positions, a break of the 200-day is not an automatic exit signal. It is a signal to evaluate, with the framework's full set of questions.

Frequently Asked Questions

How often should I check whether my PMCC's underlying is still above the 200-day?

Weekly is enough for most positions. Daily is overkill and tends to invite reaction to noise. The 200-day moves slowly, and the relationship between price and the moving average rarely changes overnight in a way that requires action. Once a week, with a focus on whether the relationship has changed materially, is the right cadence. If the underlying is hovering near the line, a quick midweek check is reasonable, but the discipline is in the routine, not in the constant monitoring.

What if my underlying is right at the 200-day, neither clearly above nor below?

This is the case for waiting. The filter's value is in the clean signal, and the cleanest signals are the ones where the underlying is well above or well below the line. Underlyings hugging the 200-day are exactly where the filter's information is weakest. The composite score will usually look unimpressive in these cases anyway, because the framework's other signals will reflect the same uncertainty. There are usually better candidates elsewhere on the watchlist.

Does the 200-day filter work the same way on individual stocks as on indices?

The general logic carries over, but individual stocks have higher idiosyncratic noise. A single name can break the 200-day on company-specific news that has nothing to do with the broader regime. The filter is most reliable on indices and on large, diversified names. On smaller names, the filter is still useful, but it should be combined with the other framework signals rather than relied on alone.

Should I close existing PMCCs immediately when the underlying breaks the 200-day?

No. The break is information, not an instruction. Evaluate the position with the full framework. Sometimes the right answer is to hold and let rolling the short call keep doing its job. Sometimes the right answer is to close and redeploy. The discipline is in the evaluation, not in any single signal.

Closing

The 200-day moving average filter is not the most sophisticated tool in the framework. It is one of the simplest. The reason it has earned its place across two decades of trading is precisely because it is simple, robust, and addresses a structural risk that PMCC traders cannot afford to ignore.

The filter does not predict. It distinguishes. The distinction is the edge.

Trade Smart. Trade Thoughtfully. Probabilities over predicitons.

Andy Crowder

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