Value Line Research Center The Value Line Research Center includes on-line access to Value Line's leading publications covering stocks¸ mutual funds¸ options and convertible securities as well as special situation stocks. Included databases are:Included are: The Value Line Investment Survey¸ The Value Line Investment Survey - Small and Mid-Cap Edition¸ The Value Line Mutual Fund Survey¸ The Value Line Daily Options Survey¸ The Value Line Special Situations Service¸ The Value Line Convertibles Survey and Exchange Traded Funds (ETFs).