1. Adequate Size of the EnterpriseIn the world of investing, there is some safety attributable to the size of an enterprise. A smaller company is generally subject to wider fluctuations in earnings. Graham recommended [in 1970] that an industrial company should have at least $100 million of annual sales, and a public utility company should have no less than $50 million in total assets. Adjusted for inflation, the numbers would work out to approximately $465 million and $232 million respectively.
2. A Sufficiently Strong Financial ConditionAccording to Graham, a stock should have a current ratio of at least two. Long-term debt should not exceed working capital. For public utilities the debt should not exceed twice the stock equity at book value. This should act as a strong buffer against the possibility of bankruptcy or default.
3. Earnings StabilityThe company should not have reported a loss over the past ten years. Companies that can maintain at least some level of earnings are, on the whole, more stable.
4. Dividend RecordThe company should have a history of paying dividends on its common stock for at least the past twenty years. This should provide some assurance that future dividends are likely to be paid. For more information on the dividend policy, read Determining Dividend Payout: When Should Companies Pay Dividends?.
5. Earnings GrowthTo help ensure a company's profits keep pace with inflation, net income should have increased by one-third or greater on a per-share basis over course of the past ten years using three-year averages at the beginning and end.
6. Moderate Price to Earnings RatioFor inclusion into a conservative portfolio, the current price of a stock should not exceed fifteen times its average earnings for the past three years. This acts as a safeguard against overpaying for a security.
7. Moderate Ratio of Price to AssetsQuoting Graham, "Current price should not be more than 1 1/2 times the book value last reported. However, a multiplier of earnings below 15 could justify a correspondingly higher multiplier of assets. As a rule of thumb we suggest that the product of the multiplier times the ratio of price to book value should not exceed 22.5 (this figure corresponds to 15 times earnings and 1 1/2 times book value. It would admit an issue selling at only 9 times earnings and 2.5 times asset value, etc.)"