All prices and market caps shown in US$. Prices shown for non-US stocks based on exchange rates at the time this table is updated.
* Market capitalization = shares outstanding (S.O.) multiplied by share price. The total value assigned to the company by the stock market.
** Currency conversion rates used in this week's table:  UK£1.00 = $1.6612; €1 = $1.48457
*** Shares Outstanding
^† The change in closing price for the week as quoted in this stock's native currency was offset by the change in the rate of exchange to US$.
¹ BLDP: Ballard Power Systems Inc. S.O. as of 10/26/09, per 2009 Q3 MD&A. H2FC estimate of float based on information found on page 34 of 2007 proxy circular. Volume on NASDAQ only, also trades on Toronto exchange:"BLD".
² F3C.F: SFC Smart Fuel Cell AG. Based in Brunnthal, Germany. IPO on 5/25/07. S.O. as of 6/30/09 per "Half Year Report 2009". Prices and volume per XETRA (Germany). Volume on Frankfurt exchange not reflected. Float as of 9/22/09 per deutsche-boerse.com. Share price and market cap converted from Euros by H2FC.
³ ITM.L: ITM Power. Trades on London Stock Exchange (AIM); share price and market cap converted from UK£ by H2FC. S.O. and float per ITM web site on 9/18/09.
⁴ IDA.L: IdaTech LLC. IPO on London Stock Exchange (AIM) on 8/6/07. Share price and market cap converted from UK£ by H2FC. S.O. and float as of 7/31/09 per idatech.com. See index of H2FC coverage of IdaTech here.
⁵ PLUG: Plug Power. S.O. as of 7/31/09 per 10-Q filed 8/6/09. S.O. reflects conversion of 395,000 shares of Class B Capital Stock into 39,500,000 shares of common stock on 12/23/08. H2FC estimate of float based on information found on page 32 of 2008 proxy circular.
⁶ MDTL.PK: Medis Technologies Ltd. Delisted from NASDAQ to "pink sheets" on 8/21/09. S.O. as of 8/17/09 per 10-Q filed 8/18/09 + 1,232,541 shares issued on 10/9/09. S.O. does not reflect common shares underlying outstanding convertible preferred stock or 2.94M 5 year 5.50 warrants included in the 6/20/08 PIPE. Float estimated by H2FC as of 5/8/08 based on S.O. shown above minus 18.96M shares held by the top five "beneficial owners" of MDTL (see proxy statement filed 4/30/07, page 10), none of whom have ever sold any of their shares (see Medis' "Form 4s").
⁷ H2F.DE: Heliocentris Fuel Cells AG. Based in Berlin, Germany. S.O. and float as of 4/17/09 per press release of 4/17/09. Prices and volume per XETRA (Germany). Volume on Frankfurt exchange not reflected. Share price and market cap converted from Euros (€) by H2FC.
⁸ CWR.L: Ceres Power. IPO on London Stock Exchange (AIM) on 11/25/04. Share price and market cap converted from UK£ by H2FC. S.O. and float as of 9/2/09 per regulatory announcement of 11/2/09 and Ceres web site.
⁹ HYGS: Hydrogenics S.O. as of 3/24/09 per SEC filing of 3/26/09. Float per email from CFO received 11/3/09. Also trades on Toronto exchange as HYG.
¹⁰ CFU.L: Ceramic Fuel Cells Ltd. Based in Australia. Began trading on London Stock Exchange (AIM) 3/2/2006. Also quoted on Australian Stock Exchange as "CFU". Share price and market cap converted from UK£ by H2FC. Volume shown here for AIM only. S.O. and float as of 7/22/09 per company web site.
¹¹ FCEL: FuelCell Energy Inc. S.O. as of 9/4/09, per 10-Q filed 9/9/09, including 3.8M unregistered shares issued to POSCO, plus 6.7M shares issued in a "direct offering" closed on 6/19/09. H2FC estimate of float based on information found on page 20 of 2008 proxy circular.
¹² MKTY.PK: Mechanical Technology Inc. S.O. as of 5/11/09 per 10-Q filed 5/14/09, giving effect to a 1 to 8 reverse split on 5/15/08. All data for MKTY reflect reverse split.
¹³ PTX.L: Protonex. Based near Boston. Trades on London Stock Exchange (AIM); share price and market cap converted from UK£ by H2FC. S.O. as of 7/31/09 per protonex.com. Volume excludes trading under PTXU.L
¹⁴ NPWZ.OB: Neah Power Systems. Trades on NASDAQ BB. S.O. as of 8/17/09 per 10-Q/A filed 8/19/09 and"reflecting recent 1:200 reverse split and 6:1 forward split. Float based on the number reported by yahoo.
¹³ AFC.L: AFC Energy Plc. Alkaline fuel cells. Based in UK. Trades on London Stock Exchange (AIM); share price and market cap converted from UK£ by H2FC. S.O. and float as of 11/6/09 per afcenergy.com.