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Side-by-side financial comparison of KT CORP (KT) and TELEPHONE & DATA SYSTEMS INC (TDS). Click either name above to swap in a different company.

KT Corporation, formerly Korea Telecom, is a South Korean telecommunications company, mobile network operator (MNO) and mobile virtual network operator (MVNO). KT is the large wireless carrier in South Korea, with 13.5 million subscribers as of Q4 2023.

Telephone and Data Systems, Inc. is a Chicago-based telecommunications service company primarily providing broadband, cable, telephone, and wireless services, and radio tower leasing, through its subsidiaries TDS Telecom and Array Digital Infrastructure, the latter of which was formerly the cell phone company United States Cellular.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
KT
KT
TDS
TDS
Q4 25
$-1.5B
Q3 25
$261.9M
Q4 24
$1.2B
Q3 24
$1.2B
Q2 24
$1.2B
Q1 24
$1.2B
Q4 23
$-2.5B
Q3 23
$1.2B
Net Profit
KT
KT
TDS
TDS
Q4 25
$56.5M
Q3 25
$-81.8M
Q4 24
$6.0M
Q3 24
$-66.0M
Q2 24
$3.0M
Q1 24
$29.0M
Q4 23
$-503.3M
Q3 23
$0
Operating Margin
KT
KT
TDS
TDS
Q4 25
Q3 25
-26.0%
Q4 24
3.0%
Q3 24
-6.7%
Q2 24
3.2%
Q1 24
5.4%
Q4 23
Q3 23
3.8%
Net Margin
KT
KT
TDS
TDS
Q4 25
-3.8%
Q3 25
-31.2%
Q4 24
0.5%
Q3 24
-5.5%
Q2 24
0.2%
Q1 24
2.4%
Q4 23
19.9%
Q3 23
EPS (diluted)
KT
KT
TDS
TDS
Q4 25
$0.33
Q3 25
$-0.84
Q4 24
$-0.09
Q3 24
$-0.73
Q2 24
$-0.13
Q1 24
$0.10
Q4 23
$-4.64
Q3 23
$-0.16

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