| GOODWILL AND INTANGIBLE ASSETS, NET |
GOODWILL AND INTANGIBLE ASSETS, NET Goodwill The following table shows the changes in our goodwill balances from December 31, 2024 to March 31, 2025: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Segments | | | | | | (in thousands) | | Index | | Analytics | | Sustainability and Climate | | All Other - Private Assets | | Total | | Goodwill at December 31, 2024 | | $ | 1,226,956 | | | $ | 296,880 | | | $ | 83,703 | | | $ | 1,307,628 | | | $ | 2,915,167 | | | Foreign exchange translation adjustment | | 1,704 | | | — | | | 1,092 | | | 596 | | | 3,392 | | | Goodwill at March 31, 2025 | | $ | 1,228,660 | | | $ | 296,880 | | | $ | 84,795 | | | $ | 1,308,224 | | | $ | 2,918,559 | | | | | | | | | | | | |
Intangible Assets, Net The following table presents the amount of amortization expense related to intangible assets by category for the periods indicated: | | | | | | | | | | | | | | | | | Three Months Ended
March 31, | | (in thousands) | | 2025 | | 2024 | | Amortization expense of acquired intangible assets | | $ | 25,817 | | | $ | 25,267 | | | Amortization expense of internally developed capitalized software | | 18,055 | | | 13,337 | | | Total amortization of intangible assets expense | | $ | 43,872 | | | $ | 38,604 | | | | | | |
The gross carrying and accumulated amortization amounts related to the Company’s intangible assets were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2025 | | December 31, 2024 | | (in thousands) | | Gross intangible assets | | Accumulated amortization | | Net intangible assets | | Gross intangible assets | | Accumulated amortization | | Net intangible assets | | | Customer relationships | | $ | 715,495 | | | $ | (389,076) | | | $ | 326,419 | | | $ | 715,020 | | | $ | (379,087) | | | $ | 335,933 | | | | Proprietary data | | 453,956 | | | (115,907) | | | 338,049 | | | 452,813 | | | (104,980) | | | 347,833 | | | | Acquired technology and software | | 257,360 | | | (202,739) | | | 54,621 | | | 256,794 | | | (199,090) | | | 57,704 | | | | Trademarks | | 209,090 | | | (183,803) | | | 25,287 | | | 209,090 | | | (181,521) | | | 27,569 | | | | Internally developed capitalized software | | 339,467 | | | (197,093) | | | 142,374 | | | 316,795 | | | (178,221) | | | 138,574 | | | | Total | | $ | 1,975,368 | | | $ | (1,088,618) | | | $ | 886,750 | | | $ | 1,950,512 | | | $ | (1,042,899) | | | $ | 907,613 | | | | | | | | | | | | | | | | |
The following table presents the estimated amortization expense for the remainder of the year ending December 31, 2025 and succeeding years: | | | | | | | | | Years Ending December 31,
(in thousands) | | Amortization
Expense | | Remainder of 2025 | | $ | 119,370 | | | 2026 | | 129,789 | | | 2027 | | 98,124 | | | 2028 | | 72,713 | | | 2029 | | 70,057 | | | Thereafter | | 396,697 | | | Total | | $ | 886,750 | | | | |
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