Finally, risks of variance price’s stock is basic-knowledge for decision to saving money with investment in stock. The economic is first factors 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. 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. When industrials growth, price’s stock of companies will increase. Because investors think, price’s stock will increase as operating result of industrials. But price’s stock will lower when operating result of companies is low because investors is worry for risk of variance price‘s stock. They will distribute stock into capital market.