Last month's feeder calf placements data points to a changing supply situation for the beef market next quarter. Similarly, feedlots' fed cattle marketings show the industry is remaining current on inventories. Analysis of the fed cattle supply situation offers insight into trading strategies that could be profitable going forward.The industry had expected the total number of cattle on feed as of 1 March to be up less than a half-percent  from a year ago and placements during February to be 8.5 percent higher. However, the results were slightly different.Friday’s Cattle on Feed report was slightly negative with total cattle on feed and placement numbers just above industry forecasts, while marketings were exactly at expectations. The t...