As the week draws to a close, the atmosphere on commodity trading desks begins to shift. By Friday afternoon, traders are no longer focused on making profits, but rather on managing risk and determining how much exposure they can tolerate until markets reopen on Sunday evening. This is because anything can happen over the weekend - unexpected news, geopolitical events, or sudden changes in market sentiment - and traders are powerless to respond until trading resumes. However, the rise of crypto exchanges and perpetual futures contracts has begun to change this dynamic, allowing traders to hedge their positions and adjust their bets even when traditional markets are closed.