Nasdaq, Inc. (NASDAQ:NDAQ) today reported financial results for the second quarter of 2021.
Second quarter 2021 net revenues were $846 million, an increase of $147 million, or 21%, from $699 million in the prior year period. Net revenues reflected a $104 million, or 15%, positive impact from organic growth, a $27 million increase from the inclusion of revenues from the acquisition of Verafin, which was completed during the first quarter of 2021, and a $16 million increase from the impact of favorable changes in FX rates.
Solutions segments revenues were $534 million in the second quarter of 2021, reflecting a $76 million, or 18%, positive impact from organic growth, a $27 million increase from the inclusion of revenues from the acquisition of Verafin, and a $8 million increase from the impact of FX. Market Services net revenues were $312 million in the second quarter of 2021, reflecting a $28 million, or 10%, positive impact from organic growth and a $8 million increase from the impact of FX.
On a GAAP basis, net income in the second quarter of 2021 was $341 million, an increase of 41% compared to $241 million in the second quarter of 2020, including the impact of a $84 million net gain on sale related to the divestiture of our U.S. fixed income business. GAAP diluted EPS was $2.05, an increase of 41% compared $1.45 in the second quarter of 2020.
On a non-GAAP basis, net income in the second quarter of 2021 was $316 million, an increase of 23% compared to $256 million in the second quarter of 2020. Non-GAAP diluted EPS totaled $1.90, an increase of 23% from $1.54 in the second quarter of 2020.
As of June 30, 2021, the company had cash and cash equivalents of $390 million and total debt of $5,701 million, resulting in net debt of $5,311 million. This compares to total debt of $5,541 million and net debt of $2,796 million at December 31, 2020.
During the second quarter of 2021, the company repurchased $248 million in shares of its common stock and repurchased an aggregate of $410 million during the first six months of 2021. As of June 30, 2021, there was $1,459 million remaining under the board authorized share repurchase program, following the board approval in June of an increase in the share repurchase authorization to an aggregate of $1.5 billion.
As previously announced, the company completed the sale of the U.S. Fixed Income business in June and issued approximately 6.2 million shares to a third party in connection with the consummation of the transaction. During the second quarter of 2021, the company began the execution of a repurchase initiative intended to offset the dilutive impacts of the sale.
The company now plans to enter an accelerated share repurchase (ASR) agreement to repurchase an additional $475 million of shares, which is expected to be completed by the end of the year. The company expects the remaining planned repurchases related to the sale of the U.S. Fixed Income business to occur in 2022 and 2023.