Retail clients at a major German discount broker trade in tandem - they tend to be on the same side of the market in a given stock during a given day, week, month, and quarter. Neither aggregate liquidity effects nor short sale constraints fully explain this behavior. The systematic execution of...

Investors in 401(k) plans violate basic principles of diversification by holding a significant fraction of their savings in the form of their employers' equity. This paper characterizes investors' active changes to their company stock investment over time by analyzing new inflows and transfers....

A German broker's clients place similar speculative trades and therefore tend to be on the same side of the market in a given stock during a given day, week, month, and quarter. Aggregate liquidity effects, short sale constraints, the systematic execution of limit orders (coordinated through...

Retail clients at a major German discount broker trade in tandem - they tend to be on the same side of the market in a given stock during a given day, week, month, and quarter. Neither aggregate liquidity effects nor short sale constraints fully explain this behavior. The systematic execution of...