1. Flash Orders: Immediate or Cancel orders to ferret out market information, such as market breadth & depth.
2. Exchange or Market Arbitrage :Exploit differences in not only prices, but also response time. There are nine major exchanges routing to NYSE:
new york stock exchange, nasdaq, BATS, the chicago board of options exchange, international securities exchange, the chicago mercantile exchange, boston stock exchange, the cincinnati stock exchange, new york stock exchange nasdaq match.
*Goal at #2: obtain national best bid & ask among all quote sources to arbitrage.
3. Arbitrage price discrepancies between outright contracts and exchange offered spreads.
4. Ex. NYSE trades much slower than BATS, time arbitrage.
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