11. Some of the factors to be considered in ascertaining whether the taxpayer's course of conduct indicates the carrying on of a business are as follows:
(a) frequency of transactions - a history of extensive buying and selling of securities or of a quick turnover of properties,
(b) period of ownership - securities are usually owned only for a short period of time,
(c) knowledge of securities markets - the taxpayer has some knowledge of or experience in the securities markets,
(d) security transactions form a part of a taxpayer's ordinary business,
(e) time spent - a substantial part of the taxpayer's time is spent studying the securities markets and investigating potential purchases,
(f) financing - security purchases are financed primarily on margin or by some other form of debt,
(g) advertising - the taxpayer has advertised or otherwise made it known that he is willing to purchase securities, and
(h) in the case of shares, their nature - normally speculative in nature or of a non-dividend type.