There are also pre-market and after hours trading sessions available, also known as Extended Markets. For Nasdaq, pre-market trading hours are 4:00 am to 9:30 am, Eastern Standard Time. After hours runs from 4:00 pm to 8:00 pm, Eastern Standard Time. Certain brokers have different pre-market and after hours trading times (for example, TD Ameritrade limits pre-market trading between 8:00 am and 9:15 am).
The circle is a universal symbol with extensive meaning. It represents the notions of totality, wholeness, original perfection, the Self, the infinite, eternity, timelessness, all cyclic movement, God ('God is a circle whose centre is everywhere and whose circumference is nowhere' (Hermes Trismegistus)).he circle is also zero in our system of numbering, and symbolizes potential, or the embryo. It has a magical value as a protective agent, ... and indicates the end of the process of individuation, of striving towards a psychic wholeness and self-realization (Julien, 71).
The Circle A is said to represent Proudhon s maxim that Anarchy is Order. (The A is for anarchy and the circle is either a symbol of order or represents the O.) But the Circle A is also said to be a symbol of unity and determination, forwarding the anarchist ideals and the inevitable rebellion against the rulers.