Luciano uses price, volume, big block trades, volatility, short sales, along with psychological factors including fear, safety and greed.

FORBES: Top Timers Sport Bearish Bias

Browsing data from Trade-Alert.com reveals that BAC was targeted by the two largest block trades in the options pits on Friday.

FORBES: Bank of America Puts Gain Popularity; Ratio Spread in Focus

Specifically, Market Intellisearch reports that 549, 896 block trades have changed hands on CSTR so far today, with buying volume totaling a hefty 684, 602 shares.

FORBES: Coinstar Poised to Benefit From Netflix's Implosion

The majority of investment banks in Hong Kong have relied on IPOs and block trades for more than 70% of their capital-market revenue in the last five years, according to Dealogic.

WSJ: China Banks Change Tack as Hong Kong IPOs Dry Up

Block trades are indicative of institutional activity.

FORBES: Money Flows Out Of Apple And Into BlackBerry

Block and program trades for Japanese clients now account for a large portion of Morgans business and billions of dollars a month in trading volume.

FORBES: Where do you buy your rice cakes?

Block trading accounted for more than 50% of the trades on the New York Stock Exchange.

FORBES: Dark Pools Made Simple

Technology has in turn spawned internalisation of trades by big investment banks off-exchange, alternative trading systems, and automated block trading.

ECONOMIST: Good times rarely last

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FORBES: Magazine Article