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QuantInsti Quantitative Learning

How Reinforcement Learning Actually Works in Trading

NowPress play to follow along0:00 / 7:51
Chapters4 segments · tap to seek
ticker lesson

Breakdown

0:00lesson

Trading Decisions: State & Action Framework

  • Environment includes indicators, time, sentiment, volatility
  • State defines market conditions at any moment
  • Agent chooses buy/sell/hold based on state
  • Actions influence future environment states
2:36lesson

Reward Functions in Trading Systems

  • Rewards measure trade outcomes: P&L, Sharpe ratio
  • Punish long hold times, drawdowns, poor risk-reward
  • Binary win/loss rewards simplify learning
  • Reward design shapes trading behavior complexity
4:51lesson

Pong as a Trading Metaphor

  • Ball movement = market state
  • Cursor movement = buy/sell/hold actions
  • P&L = reward signal
  • Game mechanics mirror trading psychology
7:01lesson

AI's Role in Quantitative Trading

  • Reinforcement learning powers adaptive trading
  • Reward function design balances simplicity/complexity
  • AI evolution drives next-gen quantitative strategies
  • Human-assisted RL bridges theory/practice

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