This surprises me somewhat:
  Short History for PVO Report Date Volume Change  1996-11-20 25,000 5,000  1996-11-27 20,000 -5,000  1996-12-04 2,000 -18,000  1996-12-11 0 -2,000  1997-01-02 6,000 6,000  1997-01-08 6,000 6,000  1997-01-22 5,000 -500  1997-01-29 0 -5,000  1997-02-05 200 200  1997-02-19 400 -29,600  1997-02-26 0 -400  1997-03-05 14,700 14,700  1997-03-12 24,700 10,000  1997-03-19 29,700 5,000  1997-03-19 29,700 5,000  1997-03-26 29,700 0  1997-04-02 29,700 0  1997-04-11 29,700 0  1997-04-18 29,700 0  1997-04-23 29,700 0  1997-04-30 44,900 15,200  1997-05-07 44,900 0  1997-05-14 44,900 0  1997-06-02 29,900 -15,000  1997-06-20 2,400 -27,500  1997-07-08 2,400 0  1997-07-23 2,400 0  1997-08-08 0 -2,400  1997-10-07 8,500 8,500  1997-10-21 0 -8,500  1997-12-19 2,250 2,250  1998-01-08 0 -2,250  1998-04-21 19,000 19,000  1998-05-25 0 -1,000  1998-09-22 1,500 0  1998-10-13 1,500 0  1998-10-21 1,500 0  1998-11-05 1,500 0  1998-11-20 1,500 0  1998-12-22 0 -1,500  1999-01-29 200 -4,600  2000-08-21 84,500 84,500  2000-09-07 219,200 134,700 |