Finally, risks of variance price’s stock is basic-knowledge for decision to saving money with investment in stock. The economic is first factor that price of stock have variance. If the economic is well, price of stock will increase because investors have idea that this time, companies will have little chance for loss. For example when the economic is well, people have high spending. Companies will have more sales and more profits. Companies will also pay more dividend or more interest. In contrast, the economic isn’t well. Sales and profits of companies will lower when people have low spending. Therefore, price’s stock will lower because investors will distribute stock of companies into capital market. Industrials are second factor that price of stock have variance. Price’s stock of companies will increase when industrials go ahead because investors think, price’s stock will change as operating result of companies. When operating result of companies is low, price’s stock will lower because investors is worry for risk of variance price‘s stock. Accordingly, investors will distribute stock into capital market. Moreover, third factor of variance price’s stock is operating result of companies. This factor have cause from strategy of companies, type of business and ability of administrators. For example in time of bad economy and bad industrial, yet administrators have high ability. Companies will still have high operating result.