GREAT PLAINS ENERGY INC

CUSIP: 391164100 Class: COM

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

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

Q2 2017
Shares 809 Value ($000) $23 Avg Close — Range —
Q4 2016
Shares 409 Value ($000) $11 Avg Close — Range —
Q2 2016
Shares 10,582 Value ($000) $321 Avg Close — Range —
Q4 2015
Shares 627 Value ($000) $17 Avg Close — Range —
Q3 2015
Shares 427 Value ($000) $11 Avg Close — Range —
Q2 2015
Shares 400 Value ($000) $9 Avg Close — Range —
Q1 2015
Shares 314 Value ($000) $8 Avg Close — Range —