Lloyd Howell
Analyst · Jefferies
Thanks, Horacio, and hello again. Before I speak through our latest results, I want to add my thanks again to those who were able to join us just a few weeks ago in New York City for Investor Day. A recording of the webcast is available at investors.boozallen.com.
Our overall objective with Investor Day was to once again demonstrate Booz Allen's commitment to long-term profitable growth. Leveraging our VoLT strategy, we will make the internal investments and strategic acquisitions required to drive and execute that growth.
In our view, the first half of fiscal year 2022 was an inflection point. As we move into the second half of the fiscal year and move past the direct and indirect influences of COVID over the last 19 months, we are entering the next leg of the firm's multiyear journey.
As Horacio noted, we closed out the first half of the fiscal year with top line performance in line with our expectations and prior guidance and with bottom line performance well ahead. This gives us great confidence in our plan for the full fiscal year. Our large backlog, strong bookings and proposal activity signals continued client interest and strong demand for our work. Our hiring engine is now firing on all cylinders, positioning us to drive growth in the second half of the fiscal year. We closed on the acquisitions of Liberty and Tracepoint.
As we have noted, we anticipated early year choppiness in our top line results as we move into a post-COVID operating rhythm, which played out as we expected. Our strong balance sheet position and favorable market conditions have allowed us to take advantage of a number of opportunities, including attractive levels of debt financing, M&A and share repurchases.
As a reminder, we had forecast constrained low single-digit top line growth in the first half, with an acceleration through the fiscal year, driven by 3 dynamics: a ramp-up in contracts and hiring; normalizing staff utilization and time-off usage, growing contributions from acquisitions. I will speak to these in more detail when I address our guidance.
With that, let me walk you through the second quarter results. Please turn to Slide 5.
At the top line, in the second quarter, revenue increased 4.3% year-over-year to $2.1 billion. Revenue excluding billable expenses grew 3.6% to $1.5 billion. Revenue growth was driven by inorganic contributions and solid operational performance, offset from higher-than-normal staff utilization in the comparable prior year period.
Now let me step through performance at the market level. In defense, revenue declined by 0.6%, primarily due to a significant material purchase in billable expenses and unusually high staff utilization in the prior year period, a headwind felt throughout most of our markets. Defense also saw some slowness in ramp-ups on both new and existing work, while ongoing protests continue to create uncertainty on the timing of program starts. In the first 6 months, revenue increased 1.8%.
In civil, revenue grew by 16.4%, led by strong performance in our health business and the addition of Liberty. Liberty's contribution so far is slightly outpacing our previously forecasted range of $300 million to $340 million of annualized revenue. We remain exceptionally pleased with Liberty's performance and contribution to Booz Allen and are well underway with plans to fully integrate it with our broader health and digital business. We are feeling momentum across this entire market as we continue to capture key opportunities aligned to the government's priorities. In the first 6 months, revenue increased 11.2%.
In intelligence, we recorded 0.8% revenue growth this quarter. Our portfolio-reshaping efforts have started to yield critical wins, and we are excited to see this business return to growth. For the full first 6 months, revenue declined 2.9%, but we believe this will continue to turn around in the second half of the fiscal year.
Lastly, revenue in global commercial declined 5.7% compared to the prior year quarter. We continue to strategically shift focus to our U.S. commercial cyber business and anticipate growth in the back half of the fiscal year as we accelerate hiring to capitalize on the strong demand and additive growth in the business from Tracepoint. In the first 6 months, revenue declined 17.2%.
Please turn to Slide 6. Our book-to-bill for the quarter was 2.03x, while our last 12 months' book-to-bill was 1.28x. Total backlog grew 18% year-over-year, resulting in backlog of $29 billion, a new record. Funded backlog grew 9.7% to $4.9 billion. Unfunded backlog grew 54.7% to $9.5 billion. And priced options grew 4.4% to $14.6 billion. We are proud of our bookings performance in the second quarter which continues to demonstrate we are not demand-constrained and our ability to win and convert on work aligned with our core capabilities and clients' most critical missions.
Pivoting to headcount. As of September 30, we had approximately 29,200 employees, up by about 1,600 year-over-year, or 5.8%. In the first half of the fiscal year, we added approximately 1,500 employees.
As we have previously noted, the competition for talent, particularly technical talent, remains fierce. Still, we have successfully executed our hiring and retention strategies. As Betty Thompson highlighted at Investor Day, those strategies focused on fostering a strong people-centered culture and effective talent systems that support individual pursuits as well as business needs.
Accelerating headcount growth remains a top operational priority for this fiscal year and will be key as we move into the next multiyear period of our investment thesis. We expect to continue building on our progress through the second half of the fiscal year.
Moving to the bottom line. Adjusted EBITDA for the quarter was $270 million, up 18.1% from the prior year period. Adjusted EBITDA margin on revenue was 12.8% compared to 11.3% in the prior year period. The increase in adjusted EBITDA margin was driven by 3 factors: first, profitable contract level performance and mix which includes the inorganic contributions into our results; second, prudent cost management; and third, a return to billing for fee within Intel, which had a $7 million negative impact on the prior year period under the CARES Act.
As we move through the fiscal year, we expect billable expenses and unallowable spends to ramp up, with billable expenses, which are currently near the low end of our historical 29% to 31% range, expected to move towards the midpoint of that range by the fiscal year end.
Second quarter net income increased 14% year-over-year to $155 million. Adjusted net income was $170 million, up 19% from the prior year period, primarily driven by the same factors driving higher adjusted EBITDA. Diluted earnings per share increased 16% to $1.14 from $0.98 the prior year period. And adjusted diluted earnings per share increased 22% to $1.26 from $1.03. These increases to our non-GAAP metrics were primarily driven by better operating performance, the inclusion of Liberty, a lower effective tax rate and a lower share count due to our share repurchase program.
Turning to cash. Cash from operations was $470 million in the second quarter compared to $426 million in the prior year period. This increase was driven primarily by continued strong cash management, fueled by consistent operational performance.
Capital expenditures for the quarter were $21 million, up approximately $3 million from the prior year period, driven by investments for future growth. We still expect capital expenditures to land within our forecast range for the fiscal year.
Please turn to Slide 7. During the quarter, we paid out $50 million for our quarterly dividend and repurchased $106 million worth of shares at an average price of $83.31 per share. We also acquired the remaining stake in Tracepoint, a promising digital forensics and incident response business. As you may recall, we took a minority stake in Tracepoint last December and the partnership has proven so fruitful that we completed the purchase in September. In total, including the close of the Tracepoint acquisition, we deployed $285 million during the quarter.
Today, we are announcing that our Board has approved a regular dividend of $0.37 per share payable on December 2 to stockholders of record on November 15. As our actions and performance demonstrate we remain committed to preserving and maximizing shareholder value through a disciplined balance capital allocation posture.
Turning now to guidance, please move to Slide 8. Before I address the numbers, I want to highlight our continued expectations for a distinct first half, second half dynamics this fiscal year. Let me walk through the puts and takes of this second half ramp, starting with the top line perspective.
First, we expect year-over-year comparables and staff utilization to normalize in the second half of the fiscal year. As a reminder, in fiscal year 2021, staff utilization trended roughly 300 basis points above typical levels in the first half of the year before starting to normalize in the third quarter.
Second, we expect that our ramp on both contracts and hiring will translate into growth as we move through the fiscal year. Strong customer interest and proactive demand signals give us confidence that any near-term slowness in the acquisition process is likely temporary, notwithstanding any unforeseen disruptions in government funding. On the other hand, from a supply perspective, our efforts to improve hiring, in some cases ahead of demand, have paid off.
Third, our growing Liberty business will fully contribute in the second half of the fiscal year relative to a partial first half.
Lastly, minor timing differences in our costing of labor, resulting from the implementation of our new financial management systems.
Putting it all together, we still forecast significant acceleration from our first half performance ramping through the fourth quarter, barring any major disruptions such as a prolonged government shutdown or other dynamics outside of our control.
Regarding adjusted EBITDA margins, we exercised considerable control over our cost structure and margin levers. We traditionally take a conservative approach to cost management early in the fiscal year and prioritize investments in our people, infrastructure and long-term growth objectives as we move throughout the fiscal year. Given the slowness we noted in the government's contracting process, we have maintained a tighter grip on our cost levers into this fiscal year. However, we still expect to make those same investments in the second half of the fiscal year, which will pressure back half adjusted EBITDA margins.
Taking these factors into consideration, we are reaffirming our fiscal year 2022 guidance. We expect revenue growth to be between 7% and 10%, inclusive of Liberty and Tracepoint. We expect adjusted EBITDA margin in the mid-10% range. Let me reiterate that we expect to make investments in our people and our technology in the second half of the fiscal year to support our multiyear growth aspirations. That said, given our strong first half results, we expect to finish near the top end of our current guidance.
We expect adjusted diluted earnings per share to be between $4.10 and $4.30 based on an effective tax rate of 22% to 24%, 134 million to 137 million weighted average shares outstanding and interest expense of $92 million to $95 million.
We expect operating cash flow near the low end of our prior $800 million to $850 million range, which is inclusive of approximately $56 million of cash payments related to the Liberty transaction.
And finally, we expect CapEx in the $80 million to $100 million range.
Finally, I would like to round out the conversation by looking to the future and our new investment thesis, which Horacio recapped in his remarks. As we continue to position ourselves for a post-COVID operating environment, we believe that our actions and performance throughout the remainder of fiscal year '22 will put us on the right trajectory to accelerate our growth and execute on our investment thesis. We are truly excited for the future of this firm and all we can accomplish for both our clients and our investors.
With that, Laura, let's open the lines for questions.