DATALINK CORP

CUSIP: 237934104 Class: COMMON STOCK

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q4 2016
Shares 192 Value ($000) $2 Avg Close — Range —
Q3 2016
Shares 251 Value ($000) $2 Avg Close — Range —
Q3 2015
Shares 1,099 Value ($000) $6 Avg Close — Range —
Q2 2015
Shares 90 Value ($000) $0 Avg Close — Range —