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What You Must Know About SL Green Realty Corp’s (NYSE:SLG) 1.38% ROE

Collin Greene

SL Green Realty Corp (NYSE:SLG) delivered a less impressive 1.38% ROE over the past year, compared to the 7.37% return generated by its industry. An investor may attribute an inferior ROE to a relatively inefficient performance, and whilst this can often be the case, knowing the nuts and bolts of the ROE calculation may change that perspective and give you a deeper insight into SLG’s past performance. Today I will look at how components such as financial leverage can influence ROE which may impact the sustainability of SLG’s returns. See our latest analysis for SL Green Realty

What you must know about ROE

Firstly, Return on Equity, or ROE, is simply the percentage of last years’ earning against the book value of shareholders’ equity. It essentially shows how much the company can generate in earnings given the amount of equity it has raised. In most cases, a higher ROE is preferred; however, there are many other factors we must consider prior to making any investment decisions.

Return on Equity = Net Profit ÷ Shareholders Equity

ROE is assessed against cost of equity, which is measured using the Capital Asset Pricing Model (CAPM) – but let’s not dive into the details of that today. For now, let’s just look at the cost of equity number for SL Green Realty, which is 8.49%. Since SL Green Realty’s return does not cover its cost, with a difference of -7.12%, this means its current use of equity is not efficient and not sustainable. Very simply, SL Green Realty pays more for its capital than what it generates in return. ROE can be broken down into three different ratios: net profit margin, asset turnover, and financial leverage. This is called the Dupont Formula:

Dupont Formula

ROE = profit margin × asset turnover × financial leverage

ROE = (annual net profit ÷ sales) × (sales ÷ assets) × (assets ÷ shareholders’ equity)

ROE = annual net profit ÷ shareholders’ equity

NYSE:SLG Last Perf Apr 18th 18

Basically, profit margin measures how much of revenue trickles down into earnings which illustrates how efficient the business is with its cost management. Asset turnover reveals how much revenue can be generated from SL Green Realty’s asset base. The most interesting ratio, and reflective of sustainability of its ROE, is financial leverage. Since financial leverage can artificially inflate ROE, we need to look at how much debt SL Green Realty currently has. At 80.21%, SL Green Realty’s debt-to-equity ratio appears sensible and indicates its ROE is generated from its capacity to increase profit without a large debt burden.

NYSE:SLG Historical Debt Apr 18th 18

Next Steps:

ROE is a simple yet informative ratio, illustrating the various components that each measure the quality of the overall stock. SL Green Realty’s ROE is underwhelming relative to the industry average, and its returns were also not strong enough to cover its own cost of equity. Although, its appropriate level of leverage means investors can be more confident in the sustainability of SL Green Realty’s return with a possible increase should the company decide to increase its debt levels. Although ROE can be a useful metric, it is only a small part of diligent research.

For SL Green Realty, there are three essential aspects you should further research:

  1. Financial Health: Does it have a healthy balance sheet? Take a look at our free balance sheet analysis with six simple checks on key factors like leverage and risk.
  2. Valuation: What is SL Green Realty worth today? Is the stock undervalued, even when its growth outlook is factored into its intrinsic value? The intrinsic value infographic in our free research report helps visualize whether SL Green Realty is currently mispriced by the market.
  3. Other High-Growth Alternatives : Are there other high-growth stocks you could be holding instead of SL Green Realty? Explore our interactive list of stocks with large growth potential to get an idea of what else is out there you may be missing!


To help readers see pass the short term volatility of the financial market, we aim to bring you a long-term focused research analysis purely driven by fundamental data. Note that our analysis does not factor in the latest price sensitive company announcements.

The author is an independent contributor and at the time of publication had no position in the stocks mentioned.