HALLIBURTON CO

Ticker: HAL CUSIP: 406216101 Class: COM

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q4 2025

Shares 26,700 Value ($000) $755 Avg Close $26.29 Range $21.32 - $29.67

Q2 2019

Shares 356,623 Value ($000) $8,110 Avg Close $22.70 Range $18.44 - $28.18

Q1 2019

Shares 338,861 Value ($000) $9,929 Avg Close $26.24 Range $22.56 - $28.37

Q4 2018

Shares 381,847 Value ($000) $10,149 Avg Close $29.13 Range $21.42 - $36.71

Q3 2018

Shares 441,881 Value ($000) $17,909 Avg Close $35.57 Range $30.83 - $40.38

Q2 2018

Shares 1,534,020 Value ($000) $69,123 Avg Close $42.64 Range $38.13 - $46.97

Q1 2018

Shares 1,269,702 Value ($000) $59,600 Avg Close $42.09 Range $37.81 - $49.30

Q4 2017

Shares 735,052 Value ($000) $35,922 Avg Close $37.45 Range $34.55 - $41.99

Q3 2017

Shares 737,984 Value ($000) $33,969 Avg Close $35.43 Range $32.25 - $39.18

Q2 2017

Shares 817,874 Value ($000) $34,931 Avg Close $38.67 Range $34.93 - $43.12

Q1 2017

Shares 827,963 Value ($000) $40,744 Avg Close $45.14 Range $39.97 - $49.28

Q4 2016

Shares 849,779 Value ($000) $45,965 Avg Close $41.70 Range $36.96 - $47.01

Q3 2016

Shares 383,726 Value ($000) $17,222 Avg Close $36.37 Range $33.52 - $39.02

Q2 2016

Shares 106,805 Value ($000) $4,837 Avg Close $34.14 Range $27.56 - $38.85

Q1 2016

Shares 106,768 Value ($000) $3,814 Avg Close $26.95 Range $22.78 - $30.44

Q4 2015

Shares 100,688 Value ($000) $3,427 Avg Close $30.98 Range $27.31 - $33.86

Q3 2015

Shares 98,938 Value ($000) $3,497 Avg Close $32.17 Range $25.25 - $35.69

Q2 2015

Shares 91,306 Value ($000) $3,933 Avg Close $37.52 Range $34.67 - $40.82

Q1 2015

Shares 96,457 Value ($000) $4,233 Avg Close $33.81 Range $30.18 - $36.38

Q4 2014

Shares 96,400 Value ($000) $3,791 Avg Close $39.28 Range $30.13 - $52.31

Q3 2014

Shares 125,900 Value ($000) $8,122 Avg Close $55.20 Range $50.84 - $59.79

Q2 2014

Shares 125,900 Value ($000) $8,940 Avg Close $51.48 Range $45.85 - $57.32

Q1 2014

Shares 89,000 Value ($000) $5,241 Avg Close $42.79 Range $38.10 - $48.14

Q4 2013

Shares 89,000 Value ($000) $4,517 Avg Close $41.29 Range $38.30 - $45.11

Q3 2013

Shares 89,000 Value ($000) $4,285 Avg Close $37.32 Range $33.32 - $40.31

Q2 2013

Shares 89,000 Value ($000) $3,713 Avg Close $33.21 Range $29.18 - $36.31

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,700	$755	$26.29	$21.32 - $29.67
Q2 2019	356,623	$8,110	$22.70	$18.44 - $28.18
Q1 2019	338,861	$9,929	$26.24	$22.56 - $28.37
Q4 2018	381,847	$10,149	$29.13	$21.42 - $36.71
Q3 2018	441,881	$17,909	$35.57	$30.83 - $40.38
Q2 2018	1,534,020	$69,123	$42.64	$38.13 - $46.97
Q1 2018	1,269,702	$59,600	$42.09	$37.81 - $49.30
Q4 2017	735,052	$35,922	$37.45	$34.55 - $41.99
Q3 2017	737,984	$33,969	$35.43	$32.25 - $39.18
Q2 2017	817,874	$34,931	$38.67	$34.93 - $43.12
Q1 2017	827,963	$40,744	$45.14	$39.97 - $49.28
Q4 2016	849,779	$45,965	$41.70	$36.96 - $47.01
Q3 2016	383,726	$17,222	$36.37	$33.52 - $39.02
Q2 2016	106,805	$4,837	$34.14	$27.56 - $38.85
Q1 2016	106,768	$3,814	$26.95	$22.78 - $30.44
Q4 2015	100,688	$3,427	$30.98	$27.31 - $33.86
Q3 2015	98,938	$3,497	$32.17	$25.25 - $35.69
Q2 2015	91,306	$3,933	$37.52	$34.67 - $40.82
Q1 2015	96,457	$4,233	$33.81	$30.18 - $36.38
Q4 2014	96,400	$3,791	$39.28	$30.13 - $52.31
Q3 2014	125,900	$8,122	$55.20	$50.84 - $59.79
Q2 2014	125,900	$8,940	$51.48	$45.85 - $57.32
Q1 2014	89,000	$5,241	$42.79	$38.10 - $48.14
Q4 2013	89,000	$4,517	$41.29	$38.30 - $45.11
Q3 2013	89,000	$4,285	$37.32	$33.32 - $40.31
Q2 2013	89,000	$3,713	$33.21	$29.18 - $36.31