Botty · Moving Average Crossover (Golden/Death Cross)

Charles Dow (1890s, conceptually); the 50/200 version popularized from the 1970s

Trend Following Evidence: Moderate swing to position equitiescryptofuturesfx

7/10

Relevance for Botty

Long when the fast MA crosses above the slow MA (golden cross), short/flat on the inverse cross. Classically 50/200 daily.

Core concept

The shorter moving average reacts faster to price; when it crosses the longer one from below, this signals a trend change to the upside. The simplest trend-filter logic — almost every systematic strategy contains it in some form.

Relevance for Botty

Relevance Score 7/10

Botty already has an EMA_CROSSOVER strategy. An MA crossover as a regime filter (e.g. 'only long when price > EMA-200') makes sense in almost every strategy.

Rules

Entry

Long entry: fast MA (e.g. 50) crosses the slow MA (e.g. 200) from below
Short entry (optional): inverse cross
Entry at the next bar close after the cross

Exit

Opposite cross
Alternatively: trailing stop at N×ATR below price
Sometimes combined: exit on a fast-MA break to avoid giveback

Parameter

Name	Typ. value	Description
fast_period	50	Shorter MA; 10/20/21 also common
slow_period	200	Longer MA; 50/100/200 popular
ma_type	SMA or EMA	EMA reacts faster, more noise

Pros & Cons

Pros

Trivial to implement and backtest
Reliably catches large trends
Provides psychological discipline — an objective rule instead of gut feeling
Versatile as a regime filter

Cons

Strongly lagging — entry 5-15% after the low, exit 5-15% after the high
Whipsaws in sideways markets — many small losses
Never enough on its own — needs to be combined with a filter (volatility, ADX, etc.)
Performance is regime-dependent: shines in strong trends, suffers otherwise

Typical performance

cagr

~7% golden-cross-only on BTC vs. ~buy-and-hold

notes

Lagging indicator. Works better as a regime filter than as a stand-alone signal.

win rate

35-45% — low, but wins are significantly larger than losses

max drawdown

~30-40% less than buy-and-hold

time in market

~50-70% — significantly reduced

Bot suitability

Very good for slow bots; barely any latency requirements. Weak as a standalone signal, very strong as a filter.

Background

Core idea

A shorter moving average reacts faster to price changes than a longer one. When it breaks through the longer one from below to above, that is evidence of an establishing uptrend — the golden cross. Conversely: death cross on a downward cross.

The 50/200-day combination is the most popular — because it receives broad media attention, it has a real influence on market behavior through reflexivity.

Variants

Setup	Timeframe	Typical use
10/20 EMA	Intraday	Scalping, fast trend
20/50 EMA	1h–4h	Swing
50/200 SMA	Daily	Long-term regime
EMA vs. EMA	any	More responsive, but more noise

Evidence

Backtests on Bitcoin (2015-2025) show ~7% CAGR for golden-cross-only strategies vs. buy-and-hold — less return, but significantly less drawdown and time in market. This is typical for all MA crossovers: you give up peak performance and get risk reduction in exchange.

The real problem: win rate below 50%. In sideways phases the system constantly produces whipsaws. The net profits come from a few large trends (fat tails).

Best practice

Never use alone — always combine with a volatility filter (e.g. ADX > 25), position sizing and stops.
Use as a regime filter: run other strategies (mean reversion, breakout) only in the matching regime.
EMA vs. SMA: if you want less lag, take the EMA — but expect more false signals.

Relevance for Botty

Botty already uses EMA crossover strategies. The most important application is as a trend filter: e.g. only accept long signals when price > EMA-200. That eliminates the worst long entries in bear markets and is a free lunch in almost all strategies.