Huh? Ex Date for the 4-1 stock divvy was Oct 1/07, payment date was Sept 28/07.
Here's the historical pricing around that time.
BIHC open high low close change volume
10/08/07 0.0025 0.0030 0.0011 0.0011 -0.0009 1,210,100
10/05/07 0.0025 0.0025 0.0020 0.0020 -0.0010 155,000
10/04/07 0.0025 0.0030 0.0021 0.0030 +0.0005 712,300
10/03/07 0.0025 0.0025 0.0025 0.0025 +0.0005 732,300
10/02/07 0.0050 0.0050 0.0020 0.0020 -0.0020 1,053,098
10/01/07 0.0011 0.0100 0.0011 0.0040 +0.0023 711,000
09/28/07 0.0022 0.0022 0.0018 0.0018 -0.0005 96,000
09/27/07 0.0025 0.0030 0.0022 0.0022 -0.0003 69,000
09/26/07 0.0020 0.0035 0.0020 0.0025 +0.0005 907,344
09/25/07 0.0018 0.0020 0.0012 0.0020 -0.0002 255,300
09/24/07 0.0022 0.0022 0.0022 0.0022 +0.0000 10,000