CBOE GLOBAL MKTS INC

Ticker: CBOE CUSIP: 12503M108 Class: COM

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

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

Q4 2025

Shares 29,660 Value ($000) $7,445 Avg Close $248.74 Range $231.60 - $262.98

Q3 2025

Shares 27,767 Value ($000) $6,810 Avg Close $240.25 Range $227.43 - $255.27

Q2 2025

Shares 26,287 Value ($000) $6,130 Avg Close $222.22 Range $200.32 - $235.37

Q1 2025

Shares 12,612 Value ($000) $2,854 Avg Close $206.46 Range $186.22 - $226.59

Q4 2024

Shares 12,585 Value ($000) $2,459 Avg Close $204.35 Range $190.02 - $219.74

Q3 2024

Shares 13,215 Value ($000) $2,707 Avg Close $194.33 Range $164.93 - $213.67

Q2 2024

Shares 13,240 Value ($000) $2,252 Avg Close $175.11 Range $164.19 - $183.42

Q1 2024

Shares 13,365 Value ($000) $2,456 Avg Close $181.47 Range $169.28 - $195.50

Q4 2023

Shares 13,475 Value ($000) $2,406 Avg Close $168.03 Range $151.05 - $180.51

Q3 2023

Shares 13,595 Value ($000) $2,124 Avg Close $143.77 Range $131.76 - $155.45

Q2 2023

Shares 14,525 Value ($000) $2,005 Avg Close $132.86 Range $127.76 - $136.91

Q1 2023

Shares 14,725 Value ($000) $1,977 Avg Close $121.75 Range $112.45 - $130.51

Q4 2022

Shares 14,925 Value ($000) $1,873 Avg Close $119.21 Range $110.13 - $126.40

Q3 2022

Shares 14,925 Value ($000) $1,752 Avg Close $115.77 Range $107.47 - $121.87

Q2 2022

Shares 14,925 Value ($000) $1,689 Avg Close $107.56 Range $99.29 - $116.66

Q1 2022

Shares 14,925 Value ($000) $1,758 Avg Close $112.97 Range $105.92 - $123.75

Q4 2021

Shares 14,875 Value ($000) $1,940 Avg Close $122.57 Range $113.03 - $128.72

Q3 2021

Shares 14,775 Value ($000) $1,830 Avg Close $115.62 Range $108.02 - $131.39

Q2 2021

Shares 14,775 Value ($000) $1,759 Avg Close $103.46 Range $92.38 - $115.58

Q1 2021

Shares 14,775 Value ($000) $1,500 Avg Close $91.73 Range $81.58 - $100.68

Q4 2020

Shares 14,775 Value ($000) $1,376 Avg Close $81.85 Range $72.46 - $88.23

Q3 2020

Shares 14,775 Value ($000) $1,296 Avg Close $83.74 Range $78.21 - $90.86

Q2 2020

Shares 14,875 Value ($000) $1,388 Avg Close $91.32 Range $78.63 - $99.53

Q1 2020

Shares 14,915 Value ($000) $1,331 Avg Close $103.43 Range $66.67 - $118.10

Q4 2019

Shares 15,015 Value ($000) $1,802 Avg Close $108.09 Range $103.26 - $114.94

Q3 2019

Shares 15,715 Value ($000) $1,806 Avg Close $106.30 Range $95.67 - $112.76

Q2 2019

Shares 15,765 Value ($000) $1,634 Avg Close $94.92 Range $86.04 - $103.62

Q1 2019

Shares 16,255 Value ($000) $1,551 Avg Close $86.61 Range $81.66 - $90.72

Q4 2018

Shares 32,290 Value ($000) $3,159 Avg Close $94.76 Range $80.14 - $104.68

Q3 2018

Shares 31,665 Value ($000) $3,039 Avg Close $91.50 Range $82.59 - $99.23

Q2 2018

Shares 32,190 Value ($000) $3,350 Avg Close $95.60 Range $87.90 - $104.09

Q1 2018

Shares 33,000 Value ($000) $3,765 Avg Close $109.72 Range $87.31 - $124.95

Q4 2017

Shares 33,535 Value ($000) $4,178 Avg Close $105.43 Range $96.72 - $115.73

Q3 2017

Shares 32,740 Value ($000) $3,524 Avg Close $88.43 Range $81.78 - $97.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	29,660	$7,445	$248.74	$231.60 - $262.98
Q3 2025	27,767	$6,810	$240.25	$227.43 - $255.27
Q2 2025	26,287	$6,130	$222.22	$200.32 - $235.37
Q1 2025	12,612	$2,854	$206.46	$186.22 - $226.59
Q4 2024	12,585	$2,459	$204.35	$190.02 - $219.74
Q3 2024	13,215	$2,707	$194.33	$164.93 - $213.67
Q2 2024	13,240	$2,252	$175.11	$164.19 - $183.42
Q1 2024	13,365	$2,456	$181.47	$169.28 - $195.50
Q4 2023	13,475	$2,406	$168.03	$151.05 - $180.51
Q3 2023	13,595	$2,124	$143.77	$131.76 - $155.45
Q2 2023	14,525	$2,005	$132.86	$127.76 - $136.91
Q1 2023	14,725	$1,977	$121.75	$112.45 - $130.51
Q4 2022	14,925	$1,873	$119.21	$110.13 - $126.40
Q3 2022	14,925	$1,752	$115.77	$107.47 - $121.87
Q2 2022	14,925	$1,689	$107.56	$99.29 - $116.66
Q1 2022	14,925	$1,758	$112.97	$105.92 - $123.75
Q4 2021	14,875	$1,940	$122.57	$113.03 - $128.72
Q3 2021	14,775	$1,830	$115.62	$108.02 - $131.39
Q2 2021	14,775	$1,759	$103.46	$92.38 - $115.58
Q1 2021	14,775	$1,500	$91.73	$81.58 - $100.68
Q4 2020	14,775	$1,376	$81.85	$72.46 - $88.23
Q3 2020	14,775	$1,296	$83.74	$78.21 - $90.86
Q2 2020	14,875	$1,388	$91.32	$78.63 - $99.53
Q1 2020	14,915	$1,331	$103.43	$66.67 - $118.10
Q4 2019	15,015	$1,802	$108.09	$103.26 - $114.94
Q3 2019	15,715	$1,806	$106.30	$95.67 - $112.76
Q2 2019	15,765	$1,634	$94.92	$86.04 - $103.62
Q1 2019	16,255	$1,551	$86.61	$81.66 - $90.72
Q4 2018	32,290	$3,159	$94.76	$80.14 - $104.68
Q3 2018	31,665	$3,039	$91.50	$82.59 - $99.23
Q2 2018	32,190	$3,350	$95.60	$87.90 - $104.09
Q1 2018	33,000	$3,765	$109.72	$87.31 - $124.95
Q4 2017	33,535	$4,178	$105.43	$96.72 - $115.73
Q3 2017	32,740	$3,524	$88.43	$81.78 - $97.42