COLUMBIA ETF TR II

Ticker: ECON CUSIP: 19762B509 Class: ETF

Walleye Trading LLC's Holding History (CIK: 0001388391)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017
Shares 17,904 Value ($000) $504 Avg Close — Range —
Q3 2017
Shares 8,141 Value ($000) $224 Avg Close — Range —
Q2 2017
Shares 19,055 Value ($000) $498 Avg Close — Range —
Q4 2016
Shares 19,889 Value ($000) $441 Avg Close — Range —