The following table presents the changes in goodwill for the year ended December 31, 2024 and the six months ended June 30, 2025:


	For the year ended December 31, 2024		For the six months ended June 30, 2025
Opening balance	$	1,683,782	$	1,669,769
Goodwill relating to acquisitions consummated during the period	—		111,925
Effect of exchange rate fluctuations	(14,013)		12,209
Closing balance	$	1,669,769	$	1,793,903

The following table presents the changes in goodwill by reporting unit for the year ended December 31, 2024:


	Financial Services		Consumer and Healthcare		High Tech and Manufacturing		Total
Opening balance	$	408,674	$	592,780	$	682,328	$	1,683,782
Effect of exchange rate fluctuations	(3,677)		(4,983)		(5,353)		(14,013)
Closing balance	$	404,997	$	587,797	$	676,975	$	1,669,769

The following table presents the changes in goodwill by reporting unit for the six months ended June 30, 2025:


	Financial Services		Consumer and Healthcare		High Tech and Manufacturing		Total
Opening balance	$	404,997	$	587,797	$	676,975	$	1,669,769
Goodwill relating to acquisitions consummated during the period	6,132		88,519		17,274		111,925
Effect of exchange rate fluctuations	3,488		4,463		4,258		12,209
Closing balance	$	414,617	$	680,779	$	698,507	$	1,793,903

The total amount of goodwill deductible for tax purposes was $237,125 and $222,925 as of December 31, 2024 and June 30, 2025, respectively.


	As of December 31, 2024						As of June 30, 2025
	Gross carrying amount		Accumulated amortization & Impairment		Net		Gross carrying amount		Accumulated amortization & Impairment		Net
Customer-related intangible assets	$	468,500	$	451,285	$	17,215	$	524,352	$	461,877	$	62,475
Marketing-related intangible assets	97,607		93,609		3,998		103,898		96,396		7,502
Technology-related intangible assets	131,853		126,116		5,737		133,904		126,446		7,458
	$	697,960	$	671,010	$	26,950	$	762,154	$	684,719	$	77,435

Amortization expenses for intangible assets acquired as part of a business combination and disclosed in the consolidated statements of income under amortization of acquired intangible assets for the three months ended June 30, 2024 and 2025 were $6,558 and $4,317, respectively, and for the six months ended June 30, 2024 and 2025 were $13,485 and $8,637, respectively.

Amortization expenses for internally-developed and other intangible assets disclosed in the consolidated statements of income under cost of revenue and selling, general and administrative expenses for the three months ended June 30, 2024 and 2025 were $498 and $700, respectively, and for the six months ended June 30, 2024 and 2025 were $956 and $1,318, respectively.