CBOE HOLDINGS INC

CUSIP: 12503m108 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q2 2017
Shares 29,550 Value ($000) $2,701 Avg Close — Range —
Q1 2017
Shares 17,975 Value ($000) $1,457 Avg Close — Range —
Q4 2016
Shares 19,575 Value ($000) $1,446 Avg Close — Range —
Q3 2016
Shares 19,375 Value ($000) $1,256 Avg Close — Range —
Q2 2016
Shares 21,475 Value ($000) $1,431 Avg Close — Range —
Q1 2016
Shares 21,775 Value ($000) $1,423 Avg Close — Range —
Q4 2015
Shares 22,375 Value ($000) $1,452 Avg Close — Range —
Q3 2015
Shares 23,775 Value ($000) $1,595 Avg Close — Range —
Q2 2015
Shares 24,575 Value ($000) $1,406 Avg Close — Range —
Q1 2015
Shares 24,575 Value ($000) $1,411 Avg Close — Range —
Q4 2014
Shares 24,575 Value ($000) $1,559 Avg Close — Range —
Q3 2014
Shares 24,575 Value ($000) $1,315 Avg Close — Range —
Q2 2014
Shares 24,575 Value ($000) $1,209 Avg Close — Range —
Q1 2014
Shares 24,525 Value ($000) $1,388 Avg Close — Range —
Q4 2013
Shares 24,325 Value ($000) $1,264 Avg Close — Range —
Q3 2013
Shares 24,675 Value ($000) $1,116 Avg Close — Range —
Q2 2013
Shares 24,675 Value ($000) $1,151 Avg Close — Range —