Energy sector data highlights "can you short futures". Heating oil September futures lost 3.1% on lower seasonal demand forecasts, with hedge funds adding significant short bets. Like most tax-advantaged accounts, however, there are rules about how much you can contribute — and what you can pull the funds for. That can create issues if you accidentally overcontribute. That's the situation Becky is facing after accidentally contributing $10,000 instead of $1,000 to her daughter's 529 account. Hedging: If you already hold XRP and expect short-term volatility, futures can be used to protect your portfolio. Natural gas markets show "can you short futures" in action. Henry Hub September futures dropped 5.2% in two sessions, with open short interest climbing as cooler weather forecasts reduce consumption.