Andrew Power
Chief Financial Officer at Digital Realty Trust
Thank you, Bill. Let's turn to our leasing activity on Page 7. For the second straight quarter, we signed total bookings of $113 million, this time with a $12 million contribution from Interconnection. Deal mix was consistent with the prior four quarter average, sub 1 megawatt deals plus Interconnection represented about 40% of the total, while larger deals represented around 60%.
Space and Power bookings were also well diversified by region with EMEA and APAC contributing 45% of our total, about the same as the Americas, with Interconnection accounting for the remaining 10%. The weighted average lease term was a little over 5.5 years. And we landed a record 140 new logos during the third quarter with strong showings across all regions, demonstrating the power of our global platform.
In terms of specific wins during the quarter and around the world, a leading cloud native cyber security platform is expanding its high performance computing capabilities by leveraging PlatformDIGITAL in four markets across North America and Europe, connected with cloud providers, improving performance and driving down cost. A market-leading autonomous driving technology developer partnered with Digital Realty to tailor an innovative and unique infrastructure solution for simulation workloads. Two major North American energy firms chose Digital Realty to leverage our geographic reach and re-architect their network to interconnect with cloud providers and implement security controls as part of their hybrid IT strategy. A public university in the Eastern US is launching a global research initiative with other universities in EMEA and deploying PlatformDIGITAL network hubs across two continents and three cities to help enable this project. A maker of high performance computing systems is expanding their footprint by deploying on PlatformDIGITAL across multiple regions to guarantee GDPR compliance while enhancing their security, performance and sustainability. And finally, a global 500 fintech provider is expanding their own hybrid IT availability zones into multiple new metros using PlatformDIGITAL to support their data-intensive and high performance computing requirements.
Turning to our backlog on Page 9, the current backlog of leases signed but not yet commenced rose from $303 million to $330 million as third quarter signings more than offset commencements. The line between signings and commencements was down slightly from last quarter at just over seven months.
Moving on to renewal leasing activity on Page 10, we signed $223 million of renewal leases during the third quarter, our largest ever renewal quarter, in addition to new leases signed. The weighted average lease term on renewals signed during the quarter was a little over 3.5 years. Renewal rates for sub 1 megawatt deals remained consistently positive. Greater than a megawatt renewals were skewed by our largest deal of the quarter that combined a sizable 30-megawatt renewal with our largest new deal for the quarter, which will land entirely in existing, currently vacant or soon-to-be vacant capacity across Chicago and Ashburn. Excluding this one transaction, our cash mark-to-market would have been a positive 1%.
This multi-facet transaction was a prime example of what we mean when we talk about our holistic long-term approach to customer relationship management. We believe we have a distinct advantage when we're competing for new business with a customer that we are already supporting elsewhere within our global portfolio. And whenever we can, we try to provide a comprehensive financial package across multiple locations and offerings, including both new business, as well as renewals. In terms of first quarter operating performance, reported portfolio occupancy ticked down by 50 basis points, largely driven by the sale of fully leased assets during the quarter.
Upon commencement of the large combination renewal expansion lease I mentioned a moment ago, portfolio occupancy is expected to improve by 70 basis points. Same-capital cash NOI growth was negative 5.5% in the third quarter, primarily driven by a spike in property taxes in Chicago where local assessors have adopted a very aggressive posture, along with the impact of the Ashburn churn event in January.
Of the 70 megawatts we got back on January 1st, approximately 80% has since been released to multiple large and growing customers. As a reminder, the Westin Building in Seattle, the interaction platform in EMEA, Lamda Hellix in Greece and Altus IT in Croatia are not yet included in the same-store pool. So these same-capital comparisons are less representative of our underlying business today than usual. And while we're still in the early stages of our budgeting process, we're optimistic in terms of where our same-store NOI growth goes for 2022.
Turning to our economic risk mitigation strategies on Page 11, the US dollar strengthened during the third quarter, providing a small FX headwind in the third quarter. As a reminder, we manage currency risk by issuing locally-denominated debt to act as a natural hedge. So only our net assets within a given region are exposed to currency risk from an economic perspective. Our Swiss green bond offering during the quarter is a good example of this.
In addition to managing credit risk and foreign currency exposure, we also mitigate interest rate risk by proactively terming out short-term variable rate debt for longer-term fixed rate financing. Given our strategy of matching the duration of our long-lived assets with long-term fixed rate debt, a 100-basis point move in LIBOR would have approximately a 50-basis point impact on full year FFO per share.
Our near-term funding and refinancing risk is very well managed, and our capital plan is fully funded. In terms of earnings growth, third quarter core FFO per share was up 7% on both a year-over-year and sequential basis, driven by strong operational execution, cost controls and a reduction in financing costs from the debt refinancings and redemptions of preferred stock over the past year. To avoid any confusion, our core FFO outperformance excludes the benefit of a nearly $20 million promote fee received in connection with the monetization of our joint venture with Prudential.
Heading into the final quarter of the year, we have solid momentum. So we're raising our full year outlook for revenue, adjusted EBITDA and core FFO per share to reflect this underlying momentum in our business.
Last, but certainly not least, let's turn to the balance sheet on Page 12. We continued to recycle capital by disposing of assets that have limited growth prospects, raising over $100 million in the third quarter for our 20% position in the Prudential JV and some land in Arizona. We also raised approximately $95 million of common equity under our ATM program in July, as well as $950 million of common equity in a September forward-equity offering.
Our reported leverage ratio remains at 6 times, but including committed proceeds from the September forward-equity offering, the leverage ratio drops to 5.6 times, while our fixed charge coverage improved to 6 times. We continued to execute our financial strategy of maximizing the menu available capital options while minimizing the related costs and extending the duration of our liabilities to match our long-lived assets. Our two capital market transactions this quarter are examples of our prudent approach to balance sheet management. This successful execution against our financing strategy reflects the strength of our global platform, which provides access to the full menu of public as well as private capital, sets us apart from our peers and enables us to prudently fund our growth.
As you can see from the chart on Page 13, our weighted average debt maturity is over six years and our weighted average coupon is down to 2.2%. Three-quarters of our debt is non-US dollar denominated, reflecting the growth of our global platform, while also acting as a natural FX hedge for our investments outside the US. Over 90% of our debt is fixed rate, guarding against a rising rate environment. And 98% of our debt is unsecured, providing the greatest flexibility for capital recycling.
Finally, as you can see from the left side on Page 14, we have a clear runway with nominal near-term debt maturities and no bar too tall in the out years. Our balance sheet is poised to weather a storm, but also positioned to fuel growth opportunities for our customers around the globe, consistent with our long-term financing strategy. This concludes our prepared remarks. And now we will be pleased to take your questions. Operator, would you please begin the Q&A session?