After the Henry Hub natural gas price for February doubled, oil-and-gas producers aggressively locked in hedges. Cold weather caused the largest one-week rally since at least 1990. Oil and gas producers leaned into the historic rally in Nymex Henry Hub prices driven by Winter Storm Fern. The storm brought sub-freezing temperatures across much of the Lower 48, tightening balances and sending natural gas prices sharply higher in a ten-day period from January 19 to January 28. AEGIS client hedging activity for natural gas reached the most active levels…