SELECT 
    calc_status, 
    flag, 
    sum(fb_val_loc * r_rate) filter (where fb_qty < 0) overship,
    sum(fb_val_loc * r_rate) filter (where fb_qty > 0) undership
FROM 
    rlarp.osm_dev 
WHERE 
    oseas = 2021  
    AND version = 'ACTUALS' 
    AND calc_status = 'CLOSED'
    AND flag = 'REMAINDER'
GROUP BY 
    calc_status, 
    flag;