My investment criteria are

1- positive working cap
2- positive free cash flow
3- positive net earnings
4- recurring sales whenever possible
5- small float owned in majority by insiders
6- insider trading at buying level or higher
7- no lawsuits or none which can have material negative effect
8- trading below or very close to book value (when book value is applicable
9- trading under 10x times net earnings
10- growth prospect whenever possible
11- knowledgeable management in their field with reasonable salary structure
12- limited or reasonable goodwill/intangibles
13- liquidity is prefered but sometimes a sacrifice when bottom fishing
14- very little long term debt or very reasonable debt/equity ratio
15- a situation hovering around the breakeven or inflection point where revenues are just beginning to overcome the cost structure
16- high gross margin