As noted in May and June, we've begun adding a comparison of individual company stock price with the prior month's and have included the percentage changes. Sector Companies are then ranked by percentage price change in a downloadable PDF file. You'll find the file following the list of percentage winners and losers.
The notable characteristic during July was the decrease in sector market value of .7% as a whole while the Nasdaq Composite was increasing by almost 8%. This is the first time in three months where this has happened. Also, you will notice that Advanced Cell Technology, the largest percentage gainer during June, is the largest percentage loser during July, making it number one on our volatility index, especially given that there was no particular reason for either move.
July's largest percentage stock price increases among our 21 company Stem Cell Sector were:
- Cryo-Cell International (CCEL.OB) - 70%
- Biotime Inc. (BTIM.OB) - 45%
- HepaLife Technologies (HPLF.OB) - 26%
July's largest percentage stock price decreases in our 21 company Stem Cell Sector were:
- Advanced Cell Technology (ACTC.PK) - (-35%)
- Biomatrix Scientific (BMSN.OB) - (-11%)
- Osiris Therapeutics (OSIR) - (-9%)
Comparative 21 Company Stem Cell Sector chart July 31 vs. June 30, 2009:
The sector as a whole decreased in value during June as noted above.

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