Net Sales of $567 million, up 7% year-over-year
Diluted EPS of $0.89, up 31% year-over-year
Net Income of $94 million, 17% of Net Sales
Adjusted EBITDA of $189 million, 33% of Net. | October 27, 2021
Operator
Good morning, ladies and gentlemen. Thank you for standing by. Welcome to Allison Transmission s Second Quarter 2021 Earnings Conference Call. My name is Maria, and I ll be your conference call operator today. [Operator Instructions]
I would now like to turn the conference call over to Mr. Ray Posadas, the company s Managing Director of Investor Relations. Please go ahead, sir.
Raymond Posadas
Managing Director, Investor Relations
Thank you, Maria. Good morning, and thank you for joining us for our second quarter 2021 earnings conference call. With me this morning are Dave Graziosi, our Chairman and Chief Executive Officer; and Fred Bohley, our Senior Vice President, Chief Financial Officer and Treasurer. As a reminder, this conference call webcast and this morning s presentation are available on the Investor Relations section of our website, allisontransmission.com. A replay of this call will be available through August 5. As noted on slide two of the presentation,
Operator
Good evening, ladies and gentlemen. Thank you for standing by. Welcome to Allison Transmission s First Quarter 2021 Earnings Conference Call. My name is Hillary, and I will be your conference call operator today. [Operator Instructions]
I would now like to turn the conference call over to Mr. Ray Posadas, the company s Managing Director of Investor Relations. Please go ahead, sir.
Raymond Posadas
Managing Director, Investor Relations
Thank you, Hillary. Good evening and thank you for joining us for our first quarter 2021 earnings conference call. With me this evening are Dave Graziosi, our President and Chief Executive Officer; and Fred Bohley, our Senior Vice President, Chief Financial Officer and Treasurer. As a reminder, this conference call webcast and this evening s presentation are available on the Investor Relations section of our website, allisontransmission.com. A replay of this call will be available through May fifth. As noted on Slide two of the presentat