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As one of the increasingly important alternative property sectors, data centres are a technology-focused property sector that is taking advantage of the growing investment intensity in technology-related infrastructure, against the backdrop of constant innovation and advancement in technology. The purpose of this paper is to assess the preliminary risk-adjusted performance and portfolio diversification benefits of data centre Real Estate Investment Trusts (REITs) in the USA, Australia and Singapore. The strategic implications going forward for data centres as an innovative property sector in the property investment space are also highlighted.

Using monthly total returns, the average annual return, annual risk, risk-adjusted performance and portfolio diversification benefits of data centre REITs in the USA, Australia and Singapore over 2016–2018 are assessed. Optimal asset allocation analysis is performed to investigate the value-added role of data centre REITs in a mixed-asset portfolio.

Data centre REITs delivered strong average annual return performance, outperforming the composite REITs in all three markets. This also sees data centre REITs being riskier than the overall REIT sector due to the non-traditional and maturing status of the data centre property sector. On a risk-adjusted basis, competitive performance was recorded for data centre REITs, with data centre REITs in the USA and Singapore outperforming their respective composite REITs. This performance is also delivered with significant portfolio diversification benefits with the stock market, resulting in data centre REITs contributing to the US mixed-asset portfolios across a diverse risk spectrum.

Institutional investors are now giving increased emphasis to alternative property sectors with better risk-return trade-offs. Improved performance and diversification benefits are achieved by supplementing existing property portfolios with non-traditional property sectors with counter-cyclical risk-return profiles, one of which is the data centre property sector. This sees data centres as an important alternative property sector, having technology-based drivers and being recognised as having a clear path towards institutionalisation with the major investors in the near future.

This paper is the first published empirical research analysis that specifically assessed the preliminary performance and diversification benefits of data centre REITs in the USA, Australia and Singapore. This research enables empirically validated, more informed and practical property investment decision making by institutional investors regarding the future strategic role of the data centre property sector as an innovative sector in the institutional property investment space.

As the prolonged effect of the COVID-19 pandemic has materially impacted investment returns significantly, it is more crucial than ever for institutional investors to redefine their property portfolios using assets with better investment management potential and meaningful diversification benefits. The “alternative asset revolution” is gaining traction in the property investment space internationally among institutional investors due to the shifting investment attitudes towards the alternative property sectors. Australia's $205bn healthcare property sector is at the forefront of this revolution due to its societal significance, as well as its attractive investment qualities. This paper investigates the institutional investor management of the Australian healthcare property sector via both the direct and listed channels and empirically analyses its investment attributes.

Using the unique Morgan Stanley Capital International/Property Council of Australia quarterly data set for Australian direct healthcare property over 2006–2020, the risk-adjusted performance and portfolio diversification potential direct healthcare property and listed healthcare were assessed. A constrained mean-variance portfolio optimisation framework was used to develop a six-asset portfolio scenario to analyse the portfolio added-value benefits of both direct healthcare property and listed healthcare in a mixed-asset investment strategy. A similar set of analysis was performed using the post-global financial crisis (GFC) quarterly time series of 2009–2020 to investigate the healthcare asset class' performance dynamics in the post-GFC investment timeframe.

The results indicate that direct healthcare property and listed healthcare offer two key advantages for institutional investors in managing their property portfolios: (1) a stable yet superior risk-adjusted performance and (2) significant portfolio diversification potential in managing their property portfolios. Importantly, both direct healthcare property and listed healthcare provided valuable contributions in strengthening an investment portfolio's performance. The post-GFC sub-period analysis revealed a consistent conclusion regarding the healthcare asset class's performance attributes.

This is the first research that provides an independent empirical examination of the strategic importance of Australian healthcare property as a maturing alternative property sector that can serve both investment and environmental, social and governance goals of investors. This research presents a positive investment prognosis for the Australian healthcare property sector to achieve its institutionalised status as a mainstream asset class of the future.

Amongst the alternate property sectors, healthcare property has recently become an important property sector for major investors such as pension funds in the global property landscape; particularly in the UK, and being driven by the ageing population demographics. The purpose of this paper is to assess the significance, risk-adjusted performance and portfolio diversification benefits of UK healthcare property in a UK property and mixed-asset portfolio over 2007–2016. Both healthcare property and listed healthcare property channels are assessed. Drivers and risk factors for the on-going development of the healthcare property sector are also identified.

Using annual total returns, the risk-adjusted performance and portfolio diversification benefits of UK healthcare property over 2007–2016 is assessed. An asset allocation diagram is used to assess the role of both healthcare property channels in a UK property portfolio and in a UK mixed-asset portfolio.

Both UK healthcare property and listed healthcare property delivered superior risk-adjusted returns compared to UK property, stocks and listed property over 2007–2016, with portfolio diversification benefits in the fuller mixed-asset portfolio context, but not in a narrower property portfolio context. Importantly, this sees both UK healthcare property channels as strongly contributing to the UK property and mixed-asset portfolios across the entire portfolio risk spectrum and validating the property industry perspective of healthcare property being low risk and providing diversification benefits in a mixed-asset portfolio. However, this was not to the loss or substitution of traditional direct property exposure.

Healthcare property is an alternate property sector that has become increasingly important in recent years. The results highlight the important role of both healthcare property channels in a UK property portfolio and in a UK mixed-asset portfolio. The strong risk-adjusted performance of both UK healthcare property compared to UK property, stocks and listed property sees both UK healthcare property channels contributing to the mixed-asset portfolio across the entire portfolio risk spectrum. This is particularly important, as many investors (e.g. pension funds) now see healthcare property as an important property sector in their overall portfolio; particularly with the ageing population dynamics in most countries. The importance of both healthcare property channels sees healthcare property exposure accessible to both small investors and large investors.

This paper is the first published empirical research analysis of the risk-adjusted performance of UK healthcare property, and the role of healthcare property in a UK property portfolio and in a UK mixed-asset portfolio. This research enables empirically validated, more informed and practical property investment decision-making regarding the strategic role of both healthcare property and listed healthcare property in a portfolio.

The inception of REITs in Ireland in 2013 presented an additional property investment opportunity to Ireland’s commercial property investment landscape. Importantly, the Irish REIT market is an institutional apparatus with an objective to rejuvenate Ireland’s commercial property market. The purpose of this paper is to provide an empirical validation of the performance of Irish REITs over the period March 2015 to February 2019 across several investment measures such as risk-adjusted returns and diversification benefits.

Using monthly total returns in local currency, the risk-adjusted performance and portfolio diversification attributes of Irish REITs are assessed. The mean-variance framework is utilised to assess the potential added-value benefits of Irish REITs in a mixed-asset portfolio.

Irish REITs delivered the strongest average annual return performance, lower relative volatility vs the stock market and competitive overall risk-adjusted performance. The results affirm the characteristic of Irish REITs as a total return-focussed income-driven property investment asset class. The optimal asset allocation analysis shows that Irish REITs are an important ingredient in a mixed-asset investment framework, as their allocation could be scaled effectively across the portfolio risk-return spectrum.

Irish REITs are an emerging investment opportunity for investors seeking exposure in the strongly performing property market in Ireland in the post-Global Financial Crisis period. They are also regarded as an effective alternative conduit to private investment routes (i.e. direct property and non-listed property funds), with the added advantage of being more liquid and versatile than their private property investment counterparts. Importantly, Irish REITs fulfilled the purpose for which they were originally designed. The promising initial performance observed in this paper gives a useful context to what the future might hold for Irish REITs, given the strong interest for commercial property assets in Ireland from both local and cross-border property investors.

This paper is the first empirical research aimed at providing an initial empirical performance validation of Irish REITs as an effective route to commercial property exposure in Ireland. This research enables empirically validated, more informed and practical property investment decision making regarding the strategic role of Irish REITs in a portfolio.

Spanish real estate investment trusts (REITs) emerged as an important and rapidly expanding property investment vehicle, against the backdrop of improving Spain macro-economic fundamentals and commercial property market. This sees Spanish REITs being the 3rd largest REIT market in Europe, offering access to important Iberian and European property assets, with the added benefits of transparency, governance and liquidity. The purpose of this paper is to assess the significance, risk-adjusted performance and portfolio diversification benefits of Spanish REITs in a mixed-asset portfolio over August 2014–February 2018.

Using monthly total returns, the risk-adjusted performance and portfolio diversification potential of Spanish REITs over August 2014–February 2018 are assessed. Asset allocation diagrams are used to assess the role of Spanish REITs in a mixed-asset portfolio.

Spanish REITs delivered strong risk-adjusted returns compared to stocks over August 2014–February 2018, but with limited portfolio diversification benefits. Compared to bonds, Spanish REITs offered competitive risk-adjusted returns and excellent diversification benefits. Importantly, this sees Spanish REITs as strongly contributing to the Spanish mixed-asset portfolio across the portfolio risk spectrum.

The 2012 Spanish REIT regulatory changes have been pivotal in providing a supportive environment for Spanish REITs’ growth. Spanish REITs are now a significant market in a European context. The results highlight the major role of Spanish REITs in a Spanish mixed-asset portfolio. The strong risk-adjusted performance of Spanish REITs compared to stocks sees Spanish REITs contributing to the mixed-asset portfolio across the portfolio risk spectrum. This is particularly important, as an increasing number of investors have utilised Spanish REITs to obtain their property exposure in a liquid format in recent years.

This paper is the first published empirical research analysis of the risk-adjusted performance of Spanish REITs, and the role of Spanish REITs in a mixed-asset portfolio. This research enables empirically validated, more informed and practical property investment decision-making regarding the strategic role of Spanish REITs in a portfolio.

Mexico REITs are a significant and important REIT market, both in a regional and in emerging property market context. As one of the few emerging economies in the world with an active REIT market, Mexico REITs are specifically designed to provide an effective pathway to participate in the investment opportunities offered by the Mexico commercial property market for both domestic and international investors. Importantly, Mexico REITs provide additional property investment benefits such as a high degree of transparency, governance and liquidity. The main focus of this research is to highlight the significance of Mexico REITs and assess their performance dynamics, as well as the added-value benefits of Mexico REITs in mixed-asset investment portfolios.

Using monthly total returns, the risk-adjusted performance and portfolio diversification potential of Mexico REITs over April 2011–December 2019 were assessed. A constrained mean-variance portfolio optimisation framework was used to develop a three-asset portfolio scenario using the historical returns, risk and correlation of Mexico REITs and the other two major financial assets.

Despite being more volatile than the mainstream asset classes, Mexico REITs delivered the strongest risk-adjusted performance versus stocks and bonds over April 2011–December 2019, which was made possible by the high premium of their total return performance. Notably, Mexico REITs offered excellent diversification potential with bonds, whilst demonstrating a marginal positive correlation with the stock market. These investment attributes of Mexico REITs have brought immediate benefits towards their ability to add value to the Mexico mixed-asset portfolio fabric across a wide portfolio risk–return spectrum.

Whilst their initial establishment in 2004 was considered unsuccessful, the ongoing regulatory improvements have been pivotal in providing a supportive investment environment to nurture the organic growth of Mexico REITs. This now sees the Mexico REIT market as an exemplar of success for REIT establishments amongst its peers in the Latin American region, as well as for emerging economies worldwide. Mexico REITs are now an important REIT market, as the second largest emerging REIT market in the world. The empirical investigation of this research has established the investment attributes of Mexico REITs as a listed property investment vehicle. The strong risk-adjusted performance of Mexico REITs compared to stocks and bonds sees Mexico REITs contributing to the mixed-asset portfolio across the portfolio risk–return spectrum. This is particularly important as it provides insights into the broader strategic implications of Mexico REITs as an effective, transparent and tax-efficient conduit for high-quality Latin American property exposure in a liquid format.

This paper is the first published empirical research that elucidates the investment attributes of Mexico REITs, highlighting their significance, risk-adjusted and portfolio performance enhancement role as an emerging REIT market. The main outcome of this research enables empirically validated, more informed and practical property investment decision-making regarding the strategic role of Mexico REITs in an investment portfolio.

German real estate investment trusts (REITs) are a small but important property investment vehicle in the European REIT landscape, offering German commercial property investment exposure in a liquid format, compared to the more property development-focused German listed property companies and the popular German open-ended property funds. The purpose of this paper is to assess the emergence of the German REIT market and the risk-adjusted performance and portfolio diversification benefits of German REITs in a mixed-asset portfolio over 2007-2015. The post-global financial crisis (GFC) recovery of German REITs is highlighted. Enabling strategies for the ongoing development of the German REIT market are also identified.

Using monthly total returns, the risk-adjusted performance and portfolio diversification benefits of German REITs over 2007-2015 are assessed. Efficient frontier and asset allocation diagrams are used to assess the role of German REITs (and German property companies) in a mixed-asset portfolio. Sub-period analysis is used to assess the post-GFC recovery of German REITs.

German REITs delivered lesser risk-adjusted returns compared to German stocks over 2007-2015, with limited portfolio diversification benefits. However, since the GFC, German REITs have delivered strong risk-adjusted returns, but with continued limited portfolio diversification benefits with German stocks. German REITs also out-performed German property companies. Importantly, this sees German REITs as strongly contributing to the German mixed-asset portfolio across the portfolio risk spectrum in the post-GFC environment.

German REITs are a small but important market at a local, European and global REIT level. The results highlight the major role of German REITs in a German mixed-asset portfolio in the post-GFC context. The strong risk-adjusted performance of German REITs compared to German stocks sees German REITs contributing to the mixed-asset portfolio across the portfolio risk spectrum. This is particularly important, as many investors (e.g. small pension funds) use German REITs (and German listed property companies) to obtain their German property exposure in a liquid format, as well as the increased importance of blended property portfolios of listed property and direct property.

This paper is the first published empirical research analysis of the risk-adjusted performance of German REITs, and the role of German REITs as a listed property vehicle in a mixed-asset portfolio. This research enables empirically validated, more informed and practical property investment decision making regarding the strategic role of German REITs in a portfolio.

Research impact has taken on increased importance at both a micro- and macro-level and is a key factor today in shaping the careers of real estate researchers. This has seen a range of research impact metrics become global benchmarks when assessing research impact at the individual academic level and journal level. Whilst recognising the limitations of research impact metrics, this paper uses these research impact metrics to identify the leading research impact researchers in real estate, as well as the leading real estate journals in the real estate impact space. The nexus between research quality and research impact is also articulated. As well as focusing on research quality, strategies are identified for the effective incorporation of research impact into a real estate researcher's agenda to assist their research careers; particularly for Early Career Researchers in real estate.

The research impact profile of over 150 real estate researchers and 22 real estate journals was assessed using Google Scholar and Publish or Perish. Using the research impact metrics of the h-index, total citations and i10, the leading high impact real estate researchers as well as the high impact real estate journals are identified.

Based in these research impact metrics, the leading real estate researchers in impactful real estate research are identified. Whilst being US focused, there is clear evidence of increasing roles by ERES, AsRES and PRRES players. The leading real estate journals in the impact space are identified, including both real estate-specific journals and the broader planning/urban policy journals, as well as being beyond just the standard US real estate journals. Researcher career strategies are also identified to see both research quality and research impact included as balanced elements in a real estate researcher's career strategy.

With research impact playing an increased role in all real estate researchers' careers, the insights from this paper provide strong empirical evidence for effective strategies to expand the focus on the impact of their real estate research agendas. This sees a balanced strategy around both research quality and research impact as the most effective strategy for real estate researchers to achieve their research career goals.

Research impact has taken on increased importance globally and is an important factor in shaping real estate researchers' careers. Using research impact metrics, this is the first paper to rigorously and empirically identify the leading research impact players and journals in real estate, as well as identifying strategies for the more effective inclusion of impact in real estate researchers' agendas.

Infrastructure investment is one of the few high-calibre real alternative assets with a strong prominence in the portfolios of institutional investors, especially those with a liability-driven investment strategy. This has seen increased institutional investor interest in infrastructure for reasons such as diversification benefits and inflation hedging abilities, resulting in the substantial growth in non-listed and listed investment products offering access to the infrastructure asset class, and complementing the existing route via direct investment. This paper aims to assess the investment attributes of non-listed infrastructure over Q3:2008–Q2:2019, compared with other global listed assets of infrastructure, property, stocks and bonds.

Quarterly total returns were derived from the valuation-based MSCI global non-listed quarterly infrastructure asset index over Q2:2008–Q:2019, which were then filtered to decrease the valuation smoothing effects. A similar set of returns data was also collected for the other global asset classes. The average annual return, annual risk, risk-adjusted performance and portfolio diversification benefits for non-listed infrastructure and other asset investment classes were then computed and compared. Lastly, a constrained optimal asset allocation analysis was performed to validate the performance enhancement role of global non-listed infrastructure in a mixed-asset investment framework.

Global non-listed infrastructure delivered the strongest average annual total return performance, outperforming the other asset classes and provided investors with total returns that linked strongly with inflation. Global non-listed infrastructure also provided investors with one of the least volatile investment returns because of its ability to ensure predictable total returns delivery. This means that on the Sharpe ratio risk-adjusted return basis, non-listed infrastructure was also the strongest performing asset. This performance was also delivered with significant portfolio diversification benefits with all assets, resulting in non-listed infrastructure contributing to the mixed-asset portfolios across the entire portfolio risk spectrum.

Aside from better risk-return trade-offs, institutional investors are getting more secular with their portfolios for alternative assets that are able to provide other investment benefits such as predictable long-term performance and inflation-linked returns. A further improvement in performance and diversification benefits could be achieved by enriching existing investment portfolios with real alternative assets, one of which is the infrastructure asset class. For institutional investors, having exposure to and being part of the development, delivery and management of infrastructure assets are important, as they are one of the few real assets having considerable significance in the context of society, economy and investment needs.

This is the first research paper that empirically investigates the investment attributes of the non-listed infrastructure at a global level. This research enables empirically validated, more informed and practical decision-making by institutional investors in the infrastructure asset class, especially via the non-listed pathway. The ultimate aim of this paper is to empirically validate the strategic role of non-listed infrastructure as an important alternative asset in the institutional real asset investment space, as well as in the overall portfolio context.

Communication infrastructure assets present a compelling investment opportunity for investors interested to tap into the technology-driven and innovation-led infrastructure segments, given the need for intensified capital deployment to prepare for the future substantial flow in volume and velocity of information. These communication infrastructure assets exist either in the segments of satellite or telecommunication infrastructure. This paper intends to empirically assess the performance attributes of listed satellite and telecommunication infrastructure over January 2000–June 2019. Sub-period performance dynamics of listed satellite and telecommunication infrastructure in the pre-GFC (January 2000–June 2007) and the post-GFC (July 2009–June 2019) investment horizons are provided.

Nineteen-year monthly total returns over 2000–2019 were used to analyse the risk-adjusted performance and portfolio diversification potential of both listed satellite and telecommunication infrastructure. The mean-variance portfolio optimisation framework using the full period and post-GFC ex-post returns, risk and correlation coefficient of listed satellite and telecommunication infrastructure and other financial assets was developed to determine the added-value benefits of listed satellite and telecommunication infrastructure in an optimised investment framework.

Listed satellite and telecommunication infrastructure delivered mixed investment performance. They were highly volatile and there was a significant discount in total return performance against the other asset classes in the full and pre-GFC periods. However, listed telecommunication infrastructure delivered stronger performance in the post-GFC period across all performance measures. Listed satellite and telecommunication infrastructure offered strong diversification benefits for investors across all investment horizons. Further, the inclusion of listed telecommunication infrastructure in both the full period and post-GFC mixed-asset investment framework was also empirically justified.

Communication infrastructure assets such as satellite and telecommunication infrastructure are the key infrastructure assets to ensure the seamless operation of and interaction with modern technology going forward. Whilst being a small proportion of the overall infrastructure asset class universe, the $2.1 trillion progressively expanding listed communication infrastructure sector is having an important role to stimulate investor capital deployments in high quality and future-proof communication infrastructure assets. Listed satellite and telecommunication infrastructure assets are an opportunistic investment given their future growth potential and are seen as a suitable fit for investors with a secular investment profile.

Despite the infrastructure asset class being the focus of growing attention and empirical analysis, no previous studies have empirically investigated the listed satellite and telecommunication infrastructure sectors. This is the first published empirical research analysis that aims at articulating the investment attributes of listed satellite and telecommunication infrastructure as a route for exposure in technology-related infrastructure assets. This research validates and informs practical property investment decision-making for investors seeking exposure in the increasingly important communication infrastructure assets sector.