The MassDevice Weekly Checkup: August 18, 2009

{IMAGERIGHT:http://www.massdevice.com/sites/default/wp-content/uploads/checkup/090818_index1.gif}Our Weekly Checkup takes the temperature of the medical device industry’s three largest U.S. clusters: Massachusetts, California and Minnesota.

The MassDevice Indices are weighted according to market capitalization, based on the number of shares outstanding for each company from its most recent quarterly report and each Friday’s closing share price.

The Massachusetts index for the week ended August 14 closed at 4.77, down less than 1 percent compared with the prior week. Since Jan. 1, when we began tracking these companies, the index has risen nearly 8 percent.

The Minnesota index for the week ended August 14 closed at 3.47, up 2.6 percent compared with the prior week. Since Jan. 1, when we began tracking these companies, the index has risen 17.4 percent.

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The California index for the week ended August 14 closed at 5.73, down 1.7 percent compared with the prior week but up 35 percent since we began tracking these companies Jan. 1.

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We also create a composite index of the three regional indices and compare it with four other indices (the S&P 500, the Dow Jones Industrial Average, the Dow’s IHI medical devices index and the NASDAQ exchange):

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The Weekly Checkup also compares Monday morning’s opening share prices with their value when the markets close Friday afternoon to calculate the biggest gainers and losers.

Here are the 20 firms that posted the biggest share price gains and losses during the week ended August 14:

The 10 biggest gainers:

1. Intraop Medical Corp. (CA): 53.8% (open $0.01; close $0.02)
2. SeraCare Life Sciences (MA): 41.2% (open $1.70; close $2.40)
3. Trimedyne Inc. (CA): 36.8% (open $0.19; close $0.26)
4. Imaging3 Inc. (CA): 35.1% (open $0.04; close $0.05)
5. American Shared Hospital Services (CA): 24.3% (open $2.18; close $2.71)
6. Insulet Corp. (MA): 23.4% (open $7.17; close $8.85)
7. Staar Surgical Company (CA): 17.2% (open $2.67; close $3.13)
8. WuXi PharmaTech (MA): 16.5% (open $10.60; close $12.35)
9. Iridex Corp. (CA): 11.1% (open $2.07; close $2.30)
10. Urologix Inc. (MN): 7.8% (open $1.16; close $1.25)

Sources: Google Finance and Yahoo! Finance.

And the 10 biggest losers:

1. Cambridge Heart Inc. (MA): -21.6% (open $0.10; close $0.08)
2. Oculus Innovative Sciences Inc. (Micromed) (CA): -15.9% (open $2.45; close $2.06)
3. Aspect Medical Systems Inc. (MA): -12.1% (open $6.05; close $5.32)
4. Parexel International (MA): -11.6% (open $14.30; close $12.64)
5. BioSphere Medical Inc. (MA): -9.2% (open $3.71; close $3.37)
6. Interleukin Genetics Inc. (MA): -9.1% (open $0.66; close $0.60)
7. Xtent Inc. (CA): -8.3% (open $0.48; close $0.44)
8. EXACT Sciences Corp. (MA): -7.8% (open $2.81; close $2.59)
9. Emergent Group Inc. (CA): -7.8% (open $7.70; close $7.10)
10. Caliper Life Sciences (MA): -7.7% (open $1.96; close $1.81)

Sources: Google Finance and Yahoo! Finance.

Disclaimer: MassDevice.com’s rankings do not reflect an opinion of companies’ health, prospects or viability. They are intended to provide a snapshot of publicly traded medical device companies and in no way constitute a recommendation to buy or sell any particular security, portfolio of securities, transaction or investment strategy.