“… [covid’s] always on my mind, [covid’s] always on my mind.” With apologies to Willie Nelson, that was the tune markets were singing Tuesday. After a brief pause yesterday, crude oil, stocks, currencies, and commodities all continued Friday’s risk-off and liquidation trade. The CBOT started the day on a weak note overnight and losses simply accelerated from there. Buying interest was limited but what developed from time to time was quickly sold with funds and speculative traders using rallies to liquidate longs. Fundamental news was light Tuesday except for fresh weather updates for the U.S., Australia, and South America. Argentina and southern Brazil remain concerningly dry this week while central and...