Caught On Tape: Predicting Institutional Ownership With Order Flow

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  • 1 January 2004
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      • Published in RePEc
Abstract
Many questions about institutional trading behavior can only be answered if one can track institutional equity ownership continuously, yet institutional ownership data are only available on quarterly reporting dates. We infer institutional trading behavior from the “tape”, the Transactions and Quotes database of the New York Stock Exchange, by regressing quarterly changes in reported institutional ownership on quarterly buy and sell volume in different trade size categories. We find that institutions in aggregate demand liquidity, in that total buy (sell) volume predicts increasing (decreasing) institutional ownership. Institutions also tend to trade in large or very small sizes, in that buy (sell) volume at these sizes predicts increasing (decreasing) institutional ownership, while the pattern reverses at intermediate trade sizes that are favored by individuals. Our regression method predicts institutional ownership significantly better than the simple cutoff rules used in previous research.
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