Mike Wagnes
Senior Vice President, Chief Financial Officer at Allegion
Thanks, John and good morning, everyone. Thank you for joining today's call. Please go to slide number five. As John shared our Q2 results reflect solid performance from the entire Allegion team. We continue to execute at a high level, delivering another quarter of strong margin expansion with mid single-digit top line growth, driven by both price and volume. Revenue for the second quarter was $965.6 million, an increase of 5.8% compared to 2023. Organic revenue increased 5.2% in the quarter as a result of favorable price and volume. We saw strength across both our Americas and international regions. Q2 adjusted operating margin and adjusted EBITDA margin increased by 150 basis points and 170 basis points respectively, driven by price and productivity in excess of inflation and investments, as well as favorable volume leverage. I'm very pleased with the operational execution and margin expansion in 2024.
Adjusted earnings per share of $1.96, increased $0.20, or approximately 11.4% versus the prior year. Strong operational performance, accretive capital deployment and favorable interest and other more than offset the headwinds from higher tax. Finally, year-to-date 2024, available cash flow was $176 million, which was a 7.4% decrease versus last year. I will provide more details on our cash flow and balance sheet a little later in the presentation.
Please go to slide number six. This slide provides an overview of our quarterly revenue. I will review our enterprise results here before turning to the respective regions. Organic revenue grew 5.2% in the quarter, comprised of price realization of 2.7% and volume growth of 2.5%. As I mentioned last quarter, we are seeing the business return to expected seasonality in 2024 versus what we experienced last year. As John discussed earlier, we're accelerating capital deployment and have made investments in inorganic growth in both our Americas and international segments. As a result, acquisitions drove almost a point of growth in the quarter. Currency was a slight headwind, bringing total reported growth to 5.8%.
Please go to slide number seven. Our Americas segment delivered strong operating results in Q2. Revenue of $770.7 million was up 6% on a reported basis and up 5.7% organically, as a result of favorable price and volume in the quarter. Reported revenue includes four tenths of a percent growth from the acquisitions of Krieger and Unicel. Our non-residential business, inclusive of access technologies, increased mid single-digits in the quarter as end markets remained stable. Our residential business was at low single digits in the quarter, showing an improvement versus the declines in Q1. Demand for electronics in our Americas region remained strong. While electronics revenue was down low, single digits in the quarter against a tough comparable, our business has grown well above 30% over the last two years for both the quarter and year-to-date. Americas adjusted operating income of $226.2 million, increased 9.9% versus the prior year period, due to solid top line growth and strong operational execution. Adjusted operating margin and adjusted EBITDA margin for the quarter were up 110 basis points and 130 basis points, respectively, as we continue to drive margin expansion through price and productivity in excess of inflation and investments. Overall, our Americas team delivered another strong quarter.
Please go to slide number eight. Our international segment had a solid second quarter. Revenues of $194.9 million, was up 5.2% on a reported basis and up 3.1% organically. Price, realization, and strength in our electronics business drove the growth in the quarter. Acquisitions were a tailwind this quarter, positively impacting reported revenues by 3.2%, driven by the Dorcas and Boss acquisitions announced earlier this year. Currency, however, was a headwind of 1.1%. International adjusted operating income of $23.6 million, increased 12.9% [Phonetic] versus the prior year period. Adjusted operating margin and adjusted EBITDA margin for the quarter, both increased 80 basis points. Volume and favorable mix are driving the margin expansion as well as margin accretion from our acquisitions.
Please go to slide number nine. Year-to-date available cash flow came in at $176 million, down $14.1 million versus the prior year. We did see year-over-year growth in the second quarter this year. However, the first half of 2023 was particularly strong as it benefited from supply chain lead time reductions. Next, working capital as a percent of revenue increased, primarily driven by higher receivables as a result of the timing of revenue and collections within the quarter versus the prior year. Finally, our net debt to adjusted EBITDA remains at a healthy ratio of 1.9 times, consistent with where we finished 2023. It is worth noting that our gross debt and cash balances include the proceeds from our $400 million senior note issuance in the second quarter, which will be used to repay a $400 million senior note maturity in the back half of 2024. This results in slightly higher gross debt to adjust EBITDA at the end of the second quarter, but has no impact on net debt to adjusted EBITDA. Our business continues to generate strong cash flow, and our balance sheet supports continued deployment.
I will now hand the call back over to John.