Market Structure
The rules of the venue: order types, matching priority, fee tiers, tick sizes and who is allowed to do what. These determine which strategies are viable on a given exchange, which is why the same idea can work on one venue and not another.
Order Flow Analysis
Studying the sequence of executed trades rather than the resulting candles. Aggressive buying versus aggressive selling, and the size behind it, describes who is initiating. It is higher resolution than price and correspondingly noisier.
Liquidity Analysis
Measuring how much size a market can absorb without moving. Thin liquidity means larger slippage, wider spreads and greater vulnerability to single large orders. Liquidity also varies enormously by time of day and evaporates precisely when markets are most volatile.
Trade Execution
How an order is actually placed: market or limit, all at once or split over time. Good execution is the difference between a strategy's theoretical and realised return, and for anything trading often it is a larger effect than modest improvements to the entry signal.
Statistical Arbitrage
Exploiting statistical relationships between instruments, such as two assets that historically move together diverging. Individual edges are small, so returns depend on doing it many times, which makes the approach unusually sensitive to fees and execution quality.
Cross-Exchange Intelligence
Comparing the same instrument across venues. Prices, funding and liquidity differ between exchanges, and those differences are both a trading opportunity and useful context for deciding where a given strategy should run.
Market Regime Detection
Identifying whether the market is trending, ranging, or in a volatility expansion, so that a strategy runs only when its conditions suit. Most strategies are regime-dependent, and a trend system left running through months of chop will give back everything it made.