[jek-uh
l, jee-kuhl] 
| a person marked by dual personality, one aspect of which is good and the other bad. |
| Je·kyll and Hyde (jěk'əl, jē'kəl; hīd') n. Informal One who has a dual personality that alternates between phases of good and evil behavior. [After The Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson.] |
Jekyll and Hyde
1. A slang term referring to the strengths and weaknesses of a company's financial statements.
2. An asset that suddenly increases or decreases in value.
3. A senior manager's good and bad qualities, or the polarized views between two key officers within a corporation.
Investopedia Commentary
This term is derived from R. L. Stevenson's "The Strange Case of Dr Jekyll and Mr Hyde." Dr Jekyll, the atypical good scientist, unleashes his dark side, nicknamed Mr Hyde, through self-experimentation. Although Jekyll and Hyde have contradictory natures, they are one and the same person.
1. At first glance Jekyll and Hyde financial statements may seem to show strong performance, but a closer look reveals covert weaknesses.
2. Volatile stock that fluctuates widely in price is an example of a Jekyll and Hyde.
3. If two officials of a company both envision important but conflicting goals, it is called a Jekyll and Hyde situation.
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See also: Annual Report, Asset, Leprechaun Leader, Mad Hatter, Volatility
Jekyll and Hyde
A personality alternating between good and evil behavior, as in You never know whether Bob will be a Jekyll or a Hyde. This expression comes from Robert Louis Stevenson's The Strange Case of Dr. Jekyll and Mr. Hyde (1886). Also see lead a double life.