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Interactive Brokers shares owned by Parallax Volatility Advisers

Quarter-by-quarter ownership of Interactive Brokers (IBKR) shares owned by Parallax Volatility Advisers from 13F filings

Historical chart of Parallax Volatility Advisers investment in Interactive Brokers

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All positions including Interactive Brokers held by Parallax Volatility Advisers consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Interactive Brokers by Parallax Volatility Advisers

Quarter filed Position value Share count Share price at filing
2012-12-31 $2.6M 256k 10.00
2012-09-30 $6.3M 627k 10.00
2011-12-31 $208k 14k 14.93
2011-09-30 $75k 5.3k 14.05
2011-06-30 $82k 5.3k 15.46
2011-03-31 $195k 12k 15.78