The reason is the market capitalization, it's the lowest, there's a lot more to go up ...
GAHC - 0.054
Market Value $17 M
Outstanding Shares 331,352,371
other Bitcoin companies:
BTSC - 0.143
Market Value $90 M
Authorized Shares 1,770,000,000 a/o Mar 02, 2017
Outstanding Shares 632,836,771 a/o Mar 02, 2017
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GBTC - 516.00
Market Value $948 M
Outstanding Shares 1,837,300
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UBIA - 10.10
Market Value1 $305 M
Authorized Shares 200,000,000 a/o Apr 28, 2017
Outstanding Shares 30,217,046 a/o Apr 28, 2017