Catalogue
Symbols
Each symbol page documents typical spread, volatility profile, best sessions, and which strategies tend to fit. Catalogued EAs link back to the symbol pages they trade.
A symbol is any instrument you can trade in MetaTrader 5 — a currency pair, a metal like gold, a stock index, or a crypto. Each behaves differently: spread, volatility, and the sessions it comes alive in decide which strategies and Expert Advisors fit. This library documents that behaviour per symbol, and — uniquely — links every one to the EAs that trade it and the no-code Builder to make your own.
Browse by asset class
Major FX pairs
EUR/USD
The most liquid forex pair globally. Tight spreads, deep order books, and clear technical structure make it the default surface for systematic strategies — and the first market to hold any EA claim against real tick data.
GBP/USD
Cable — the high-volatility major. BoE policy cycles and UK-specific risk drive sustained directional moves that reward London-session trend and breakout EAs, and punish scalpers in the thin overnight hours. Wider and faster than EUR/USD, so the stop math and the account type matter more.
USD/JPY
The primary USD/Asia major and the archetypal carry pair. A live Tokyo session, BoJ intervention history near 145–152, and reliable liquidity make it a natural surface for trend, carry and news EAs — but the intervention tail can reverse a long by hundreds of pips in minutes.
AUD/USD
The commodity major and a reliable risk barometer. Iron ore, coal and Chinese demand cycles drive multi-week trends, and a live Sydney session gives 24-hour trend EAs signal that EUR/USD lacks. In risk-off events it falls with equities, so a risk filter matters more than on a pure USD major.
NZD/USD
The commodity major's smaller sibling — a dairy-and-risk barometer with a ~0.85 correlation to AUD/USD that turns an AUD+NZD basket into one leveraged bet. A live Wellington/Sydney open gives Asia-Pacific EAs signal, but thinner liquidity means wider relative spreads and a real Monday-open gap risk.
USD/CAD
The oil major — the one pair that trades its commodity as much as its calendar. USD/CAD moves inversely to WTI crude, so an oil shock can override BoC and Fed policy in an hour. A strong NY session and wide standard spread make it a news-and-trend surface that punishes any EA blind to the crude tape.
USD/CHF
The safe-haven inverse of EUR/USD, with a −0.85 to −0.95 correlation that makes a same-direction EUR/USD pairing a hidden double-position. In risk-off events CHF demand drives sharp drops even when the dollar is strong; in calm markets it oscillates in tight mean-reverting channels.
FX crosses
EUR/CHF
A low-volatility major cross and one of the cleanest mean-reversion surfaces in FX. Tight EU–Swiss economic integration and SNB intervention history create implicit range boundaries — ideal for Bollinger and grid EAs, and a poor fit for anything that needs a large trend. The 2015 peg break is the standing tail-risk warning.
GBP/JPY
The most volatile G10 cross — daily ranges of 120–180 pips when GBP and JPY catalysts land together. High per-trade return and high drawdown in one instrument. Suits aggressive trend and breakout EAs with wide ATR-scaled stops, and punishes anything sized for a European major.
EUR/JPY
The most liquid JPY cross and a clean risk-on barometer. Two central-bank streams — ECB and BoJ — drive daily ranges wider than any European major, and the London–Tokyo overlap runs hottest. Its tight tracking of USD/JPY means a EUR/JPY + USD/JPY book is hidden double-exposure to the yen.
AUD/JPY
The market's purest risk-on/risk-off proxy — a carry cross that tracks global equities so closely it trades like a leveraged S&P position dressed as a currency pair. A live Asia-Pacific session and twin RBA + BoJ catalysts make it a trend surface, but the risk-off cliff and carry unwind are its defining hazards.
NZD/JPY
A high-yield carry cross and AUD/JPY's thinner, wider-spread cousin. The interest differential makes the long carry attractive and the risk-off unwind brutal; near-twin correlation with AUD/JPY means running both is one position. Its wider spread taxes anything that is not a patient trend or carry hold.
EUR/GBP
The intra-European cross — a pure ECB-versus-BoE relative bet with a tight daily range that suits mean-reversion and frustrates trend. Its edge is that going long EUR/GBP is close to long EUR/USD and short GBP/USD at once, so it is both a clean single-trade expression of divergence and a hidden correlation trap.
GBP/CAD
A double-major cross that stacks GBP's policy volatility on CAD's oil sensitivity — two independent drivers on two different calendars in one wide-spread instrument. The range rewards patient trend and breakout EAs; the 3–5 pip standard spread and thin liquidity punish everything faster.
Exotic FX
USD/TRY · USD/ZAR · USD/MXN · USD/SGD
Metals
XAU/USD
Spot gold versus the US dollar — a macro asset, not a currency pair. Real rates, USD strength and geopolitical premia drive multi-month trends that dwarf FX. A large ATR and $100/pip standard sizing mean gold needs proportionally larger stops and 2–3× the capital of a major.
XAG/USD
Gold's high-beta cousin — spot silver moves further and faster than gold, with a dual monetary-and-industrial demand base and a wider spread. The gold/silver ratio, extreme intraday whips and a tick convention that differs from forex make sizing, not indicator choice, the thing that decides a silver EA's survival.
Platinum (XPT/USD)
Stock indices
US500
The S&P 500 CFD — the world's benchmark equity index and the default risk-on gauge. A long-run upward drift rewards trend EAs, but overnight cash-session gaps, index-level leverage and a tight cluster of mega-cap weightings mean a stock-index EA fails in ways a forex system never sees.
NAS100
The Nasdaq 100 CFD — the high-beta tech index that moves further and faster than the S&P. Long-duration tech makes it acutely rate-sensitive, and a heavy mega-cap concentration means a single earnings miss can swing the whole index. Big ranges reward trend and breakout EAs that are sized for the volatility.
US30
The Dow Jones 30 CFD — a price-weighted blue-chip index where the highest-priced stocks, not the biggest companies, move the tape. That quirk plus a large per-point value makes it behave differently from the cap-weighted S&P, and rewards trend EAs that understand what is actually driving it.
GER40
The DAX 40 CFD — Europe's most-traded index and a total-return benchmark that includes reinvested dividends, unlike most price indices. It takes a strong lead from the US open, so a DAX EA that ignores Wall Street is trading half the picture. Clean European-session ranges reward trend and breakout systems.
JP225
The Nikkei 225 CFD — Japan's blue-chip index and, in practice, a leveraged bet on a weak yen: it rises when the yen falls, so a JP225 EA that ignores USD/JPY is missing its main driver. Price-weighted like the Dow, it gaps on the Tokyo open after overnight US-tech moves.
UK100
The FTSE 100 CFD — a globally-earning, energy-and-miner-heavy index with a quirk that catches EAs out: it often rises when the pound falls, because its constituents earn in foreign currency. Lower volatility than the DAX and a commodity tilt make it a different animal from the US indices.
HK50
Crypto
BTC/USD
Bitcoin against the dollar — a 24/7 macro-liquidity asset that trades through weekends when forex is closed, and increasingly moves with tech-risk sentiment. Extreme volatility rewards trend and breakout EAs but demands volatility-scaled sizing; the CFD's financing and weekend-gap risk are unlike anything in forex.
ETH/USD
Ethereum against the dollar — Bitcoin's higher-beta counterpart, a 24/7 asset that moves with BTC but swings harder and adds its own network-event catalysts. Running ETH alongside BTC is close to one leveraged crypto bet. Extreme ranges reward trend EAs sized for the volatility and the CFD financing.
XRP/USD
XRP against the dollar — a low-nominal-price, headline-driven crypto where regulatory and legal news moves the price in binary jumps. Thinner liquidity than BTC or ETH means wider slippage, and the low unit price makes lot-value easy to misjudge. A 24/7 asset for event-aware trend EAs only.
SOL/USD
Solana against the dollar — the highest-beta major crypto, moving more than BTC or ETH in both directions, with a network-reliability tail risk from its history of outages. A 24/7 asset that follows the ETH/BTC risk tone while adding its own protocol-specific shocks. For trend EAs sized for the extremes.
LTC/USD
Commodities
WTI Oil
West Texas Intermediate crude — the US oil benchmark, driven by weekly inventory data, OPEC decisions and geopolitics rather than an FX calendar. Front-month CFDs roll and can gap on expiry, and its 2020 dip below zero is the standing reminder that oil has tail risks a currency never does.
Brent Oil
Brent crude — the global seaborne oil benchmark that prices more of the world's supply than WTI and carries a larger geopolitical premium. It trades on OPEC, global demand and supply shocks, rolls like any front-month CFD, and its spread to WTI is itself a widely-watched signal.
Natural Gas
Frequently asked questions
What is a symbol in MetaTrader 5?
A symbol is a single tradable instrument — EUR/USD, gold (XAU/USD), the US500 index, Bitcoin, and so on. Each symbol carries its own spread, contract size, trading hours, and volatility, which is why an EA tuned for one can behave very differently on another.
Which symbol is best for automated trading?
There is no universal best — it depends on your strategy. Tight-spread majors like EUR/USD suit high-frequency and scalping systems, gold and indices offer bigger ranges for breakout EAs, and crypto trades around the clock but with wider swings. Match the symbol's volatility and session to what your EA is built to exploit.
Do EAs work on gold, indices and crypto too?
Yes. An Expert Advisor trades any symbol your broker offers, not just forex. The logic is the same; only the numbers change — spread, tick value, and volatility — so always re-backtest and re-optimise an EA on the specific symbol before running it live.
How do I choose a symbol for my strategy?
Start from what your strategy needs. Mean-reversion wants a ranging, tighter-spread pair; breakout and trend systems want the wider daily range of gold or an index; news systems want liquid majors. Each symbol page here lists the typical spread, volatility profile and best sessions so you can match it to your EA — then confirm in a backtest.