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Stock Comparison

IRM vs WELL vs VTR vs EXR vs SPG

Revenue, margins, valuation, and 5-year total return — side by side.

Live fundamentals10-year financials5-year price chart
IRM
Iron Mountain Incorporated

REIT - Specialty

Real EstateNYSE • US
Market Cap$39.18B
5Y Perf.+411.3%
WELL
Welltower Inc.

REIT - Healthcare Facilities

Real EstateNYSE • US
Market Cap$150.14B
5Y Perf.+322.9%
VTR
Ventas, Inc.

REIT - Healthcare Facilities

Real EstateNYSE • US
Market Cap$41.26B
5Y Perf.+148.3%
EXR
Extra Space Storage Inc.

REIT - Industrial

Real EstateNYSE • US
Market Cap$29.52B
5Y Perf.+44.5%
SPG
Simon Property Group, Inc.

REIT - Retail

Real EstateNYSE • US
Market Cap$65.79B
5Y Perf.+250.6%

IRM vs WELL vs VTR vs EXR vs SPG — Key Financials

Market cap, revenue, margins, and valuation side-by-side.

Company Snapshot
IRM logoIRM
WELL logoWELL
VTR logoVTR
EXR logoEXR
SPG logoSPG
IndustryREIT - SpecialtyREIT - Healthcare FacilitiesREIT - Healthcare FacilitiesREIT - IndustrialREIT - Retail
Market Cap$39.18B$150.14B$41.26B$29.52B$65.79B
Revenue (TTM)$7.25B$11.63B$6.13B$3.38B$6.36B
Net Income (TTM)$272M$1.43B$260M$974M$4.61B
Gross Margin55.0%39.1%-4.3%28.4%85.7%
Operating Margin18.0%4.4%13.4%44.1%49.9%
Forward P/E58.4x78.9x118.3x30.1x30.4x
Total Debt$19.05B$21.38B$13.22B$14.97B$29.94B
Cash & Equiv.$159M$5.03B$741M$139M$823M

IRM vs WELL vs VTR vs EXR vs SPGLong-Term Stock Performance

Price return indexed to 100 at period start. Dividends excluded.

IRM
WELL
VTR
EXR
SPG
StockMay 20May 26Return
Iron Mountain Incor… (IRM)100511.3+411.3%
Welltower Inc. (WELL)100422.9+322.9%
Ventas, Inc. (VTR)100248.3+148.3%
Extra Space Storage… (EXR)100144.5+44.5%
Simon Property Grou… (SPG)100350.6+250.6%

Price return only. Dividends and distributions are not included.

Quick Verdict: IRM vs WELL vs VTR vs EXR vs SPG

Each card shows where this stock fits in a portfolio — not just who wins on paper.

Bottom line: WELL and EXR are tied at the top with 2 categories each (5-stock set) — the right choice depends on your priorities. Extra Space Storage Inc. is the stronger pick specifically for valuation and capital efficiency and dividend income and shareholder returns. SPG and VTR also each lead in at least one category. As sector peers, any of these can serve as alternatives in the same allocation.
IRM
Iron Mountain Incorporated
The Real Estate Income Play

IRM is the clearest fit if your priority is income & stability and long-term compounding.

  • Dividend streak 4 yrs, beta 1.10, yield 2.3%
  • 321.4% 10Y total return vs WELL's 230.2%
Best for: income & stability and long-term compounding
WELL
Welltower Inc.
The Real Estate Income Play

WELL has the current edge in this matchup, primarily because of its strength in growth exposure and sleep-well-at-night.

  • Rev growth 35.8%, EPS growth -11.5%, 3Y rev CAGR 22.7%
  • Lower volatility, beta 0.13, Low D/E 49.5%, current ratio 5.34x
  • 35.8% FFO/revenue growth vs EXR's 1.2%
  • +43.9% vs EXR's -2.1%
Best for: growth exposure and sleep-well-at-night
VTR
Ventas, Inc.
The Real Estate Income Play

VTR is the clearest fit if your priority is stability.

  • Beta 0.01 vs IRM's 1.10
Best for: stability
EXR
Extra Space Storage Inc.
The Real Estate Income Play

EXR is the #2 pick in this set and the best alternative if defensive is your priority.

  • Beta 0.52, yield 4.6%, current ratio 1.28x
  • Lower P/E (30.1x vs 118.3x)
  • 4.6% yield, vs IRM's 2.3%, (1 stock pays no dividend)
Best for: defensive
SPG
Simon Property Group, Inc.
The Real Estate Income Play

SPG ranks third and is worth considering specifically for valuation efficiency.

  • PEG 0.96 vs EXR's 6.91
  • 72.5% margin vs IRM's 3.8%
  • 11.4% ROA vs VTR's 1.0%, ROIC 7.6% vs 2.5%
Best for: valuation efficiency
See the full category breakdown
CategoryWinnerWhy
GrowthWELL logoWELL35.8% FFO/revenue growth vs EXR's 1.2%
ValueEXR logoEXRLower P/E (30.1x vs 118.3x)
Quality / MarginsSPG logoSPG72.5% margin vs IRM's 3.8%
Stability / SafetyVTR logoVTRBeta 0.01 vs IRM's 1.10
DividendsEXR logoEXR4.6% yield, vs IRM's 2.3%, (1 stock pays no dividend)
Momentum (1Y)WELL logoWELL+43.9% vs EXR's -2.1%
Efficiency (ROA)SPG logoSPG11.4% ROA vs VTR's 1.0%, ROIC 7.6% vs 2.5%

IRM vs WELL vs VTR vs EXR vs SPG — Revenue Breakdown by Segment

How each company's revenue is distributed across its business units

IRMIron Mountain Incorporated
FY 2025
Global Records and Information Management Business
86.8%$5.3B
Global Data Center Business
13.2%$803M
WELLWelltower Inc.
FY 2025
Senior Housing - Operating
81.1%$8.5B
Triple Net
11.4%$1.2B
Outpatient Medical
7.5%$782M
VTRVentas, Inc.
FY 2025
Senior Living Operations
74.0%$4.3B
Outpatient Medical And Research Portfolio
15.5%$898M
Triple Net Leased Properties
10.4%$602M
EXRExtra Space Storage Inc.
FY 2025
Self Storage Operations
89.1%$2.9B
Tenant Reinsurance
10.9%$353M
SPGSimon Property Group, Inc.
FY 2024
Real Estate Segment
100.0%$5.5B

IRM vs WELL vs VTR vs EXR vs SPG — Financial Metrics

Side-by-side numbers across 5 stocks — who leads on profitability, valuation, growth, and risk.

BEST OVERALLSPGLAGGINGVTR

Income & Cash Flow (Last 12 Months)

SPG leads this category, winning 3 of 6 comparable metrics.

WELL is the larger business by revenue, generating $11.6B annually — 3.4x EXR's $3.4B. SPG is the more profitable business, keeping 72.5% of every revenue dollar as net income compared to IRM's 3.8%. On growth, WELL holds the edge at +40.3% YoY revenue growth, suggesting stronger near-term business momentum.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
RevenueTrailing 12 months$7.2B$11.6B$6.1B$3.4B$6.4B
EBITDAEarnings before interest/tax$2.3B$2.8B$2.3B$2.2B$4.7B
Net IncomeAfter-tax profit$272M$1.4B$260M$974M$4.6B
Free Cash FlowCash after capex-$625M$2.5B$1.4B$1.8B$2.3B
Gross MarginGross profit ÷ Revenue+55.0%+39.1%-4.3%+28.4%+85.7%
Operating MarginEBIT ÷ Revenue+18.0%+4.4%+13.4%+44.1%+49.9%
Net MarginNet income ÷ Revenue+3.8%+12.3%+4.2%+28.8%+72.5%
FCF MarginFCF ÷ Revenue-8.6%+21.9%+22.4%+54.6%+35.4%
Rev. Growth (YoY)Latest quarter vs prior year+21.6%+40.3%+22.0%+9.3%+13.2%
EPS Growth (YoY)Latest quarter vs prior year+7.9%+22.5%0.0%+4.8%+3.6%
SPG leads this category, winning 3 of 6 comparable metrics.

Valuation Metrics

EXR leads this category, winning 4 of 7 comparable metrics.

At 14.3x trailing earnings, SPG trades at a 95% valuation discount to IRM's 268.8x P/E. Adjusting for growth (PEG ratio), SPG offers better value at 0.45x vs EXR's 7.00x — a lower PEG means you pay less per unit of expected earnings growth.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
Market CapShares × price$39.2B$150.1B$41.3B$29.5B$65.8B
Enterprise ValueMkt cap + debt − cash$58.1B$166.5B$53.7B$44.4B$94.9B
Trailing P/EPrice ÷ TTM EPS268.78x154.17x160.70x30.46x14.31x
Forward P/EPrice ÷ next-FY EPS est.58.45x78.89x118.34x30.07x30.42x
PEG RatioP/E ÷ EPS growth rate7.00x0.45x
EV / EBITDAEnterprise value multiple23.90x66.76x24.36x20.12x20.38x
Price / SalesMarket cap ÷ Revenue5.68x14.08x7.07x8.74x10.34x
Price / BookPrice ÷ Book value/share3.37x3.19x2.07x9.84x
Price / FCFMarket cap ÷ FCF52.72x31.34x16.14x
EXR leads this category, winning 4 of 7 comparable metrics.

Profitability & Efficiency

SPG leads this category, winning 5 of 9 comparable metrics.

SPG delivers a 68.8% return on equity — every $100 of shareholder capital generates $69 in annual profit, vs $2 for VTR. WELL carries lower financial leverage with a 0.49x debt-to-equity ratio, signaling a more conservative balance sheet compared to SPG's 4.47x. On the Piotroski fundamental quality scale (0–9), WELL scores 7/9 vs IRM's 4/9, reflecting strong financial health.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
ROE (TTM)Return on equity+3.5%+2.1%+6.7%+68.8%
ROA (TTM)Return on assets+1.3%+2.3%+1.0%+3.3%+11.4%
ROICReturn on invested capital+6.2%+0.5%+2.5%+3.9%+7.6%
ROCEReturn on capital employed+8.2%+0.6%+3.2%+5.4%+9.1%
Piotroski ScoreFundamental quality 0–947655
Debt / EquityFinancial leverage0.49x1.05x1.05x4.47x
Net DebtTotal debt minus cash$18.9B$16.3B$12.5B$14.8B$29.1B
Cash & Equiv.Liquid assets$159M$5.0B$741M$139M$823M
Total DebtShort + long-term debt$19.1B$21.4B$13.2B$15.0B$29.9B
Interest CoverageEBIT ÷ Interest expense1.28x0.26x1.40x2.68x3.26x
SPG leads this category, winning 5 of 9 comparable metrics.

Total Returns (Dividends Reinvested)

Evenly matched — IRM and WELL each lead in 3 of 6 comparable metrics.

A $10,000 investment in IRM five years ago would be worth $37,537 today (with dividends reinvested), compared to $11,680 for EXR. Over the past 12 months, WELL leads with a +43.9% total return vs EXR's -2.1%. The 3-year compound annual growth rate (CAGR) favors WELL at 41.3% vs EXR's 1.0% — a key indicator of consistent wealth creation.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
YTD ReturnYear-to-date+59.3%+15.0%+12.9%+8.0%+11.2%
1-Year ReturnPast 12 months+38.9%+43.9%+33.2%-2.1%+31.1%
3-Year ReturnCumulative with dividends+149.0%+182.2%+93.0%+2.9%+107.0%
5-Year ReturnCumulative with dividends+275.4%+212.6%+80.0%+16.8%+98.5%
10-Year ReturnCumulative with dividends+321.4%+230.2%+67.4%+106.5%+32.2%
CAGR (3Y)Annualised 3-year return+35.5%+41.3%+24.5%+1.0%+27.5%
Evenly matched — IRM and WELL each lead in 3 of 6 comparable metrics.

Risk & Volatility

Evenly matched — IRM and VTR each lead in 1 of 2 comparable metrics.

VTR is the less volatile stock with a 0.01 beta — it tends to amplify market swings less than IRM's 1.10 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. IRM currently trades 99.9% from its 52-week high vs EXR's 90.1% drawdown — a narrower gap to the peak suggests stronger recent price momentum.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
Beta (5Y)Sensitivity to S&P 5001.10x0.13x0.01x0.52x0.61x
52-Week HighHighest price in past year$131.80$219.59$88.50$155.19$208.28
52-Week LowLowest price in past year$77.77$142.65$61.76$125.71$155.44
% of 52W HighCurrent price vs 52-week peak+99.9%+97.6%+98.1%+90.1%+97.1%
RSI (14)Momentum oscillator 0–10075.162.662.048.054.9
Avg Volume (50D)Average daily shares traded1.5M2.6M3.3M1.1M1.4M
Evenly matched — IRM and VTR each lead in 1 of 2 comparable metrics.

Analyst Outlook

Evenly matched — IRM and EXR each lead in 1 of 2 comparable metrics.

Analyst consensus: IRM as "Buy", WELL as "Buy", VTR as "Buy", EXR as "Hold", SPG as "Hold". Consensus price targets imply 6.7% upside for EXR (target: $149) vs -2.6% for SPG (target: $197). For income investors, EXR offers the higher dividend yield at 4.64% vs WELL's 1.29%.

MetricIRM logoIRMIron Mountain Inc…WELL logoWELLWelltower Inc.VTR logoVTRVentas, Inc.EXR logoEXRExtra Space Stora…SPG logoSPGSimon Property Gr…
Analyst RatingConsensus buy/hold/sellBuyBuyBuyHoldHold
Price TargetConsensus 12-month target$132.33$226.50$90.80$149.13$197.00
# AnalystsCovering analysts2034322837
Dividend YieldAnnual dividend ÷ price+2.3%+1.3%+2.1%+4.6%
Dividend StreakConsecutive years of raises42102
Dividend / ShareAnnual DPS$3.09$2.76$1.86$6.49
Buyback YieldShare repurchases ÷ mkt cap0.0%0.0%0.0%+0.5%0.0%
Evenly matched — IRM and EXR each lead in 1 of 2 comparable metrics.
Key Takeaway

SPG leads in 2 of 6 categories (Income & Cash Flow, Profitability & Efficiency). EXR leads in 1 (Valuation Metrics). 3 tied.

Best OverallSimon Property Group, Inc. (SPG)Leads 2 of 6 categories
Loading custom metrics...

IRM vs WELL vs VTR vs EXR vs SPG: Key Questions Answered

10 questions · data-driven answers · updated daily

01

Is IRM or WELL or VTR or EXR or SPG a better buy right now?

For growth investors, Welltower Inc.

(WELL) is the stronger pick with 35. 8% revenue growth year-over-year, versus 1. 2% for Extra Space Storage Inc. (EXR). Simon Property Group, Inc. (SPG) offers the better valuation at 14. 3x trailing P/E (30. 4x forward), making it the more compelling value choice. Analysts rate Iron Mountain Incorporated (IRM) a "Buy" — based on 20 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

02

Which has the better valuation — IRM or WELL or VTR or EXR or SPG?

On trailing P/E, Simon Property Group, Inc.

(SPG) is the cheapest at 14. 3x versus Iron Mountain Incorporated at 268. 8x. On forward P/E, Extra Space Storage Inc. is actually cheaper at 30. 1x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Simon Property Group, Inc. wins at 0. 96x versus Extra Space Storage Inc. 's 6. 91x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

03

Which is the better long-term investment — IRM or WELL or VTR or EXR or SPG?

Over the past 5 years, Iron Mountain Incorporated (IRM) delivered a total return of +275.

4%, compared to +16. 8% for Extra Space Storage Inc. (EXR). Over 10 years, the gap is even starker: IRM returned +321. 4% versus SPG's +32. 2%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

04

Which is safer — IRM or WELL or VTR or EXR or SPG?

By beta (market sensitivity over 5 years), Ventas, Inc.

(VTR) is the lower-risk stock at 0. 01β versus Iron Mountain Incorporated's 1. 10β — meaning IRM is approximately 11509% more volatile than VTR relative to the S&P 500. On balance sheet safety, Welltower Inc. (WELL) carries a lower debt/equity ratio of 49% versus 4% for Simon Property Group, Inc. — giving it more financial flexibility in a downturn.

05

Which is growing faster — IRM or WELL or VTR or EXR or SPG?

By revenue growth (latest reported year), Welltower Inc.

(WELL) is pulling ahead at 35. 8% versus 1. 2% for Extra Space Storage Inc. (EXR). On earnings-per-share growth, the picture is similar: Ventas, Inc. grew EPS 184. 2% year-over-year, compared to -19. 7% for Iron Mountain Incorporated. Over a 3-year CAGR, WELL leads at 22. 7% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

06

Which has better profit margins — IRM or WELL or VTR or EXR or SPG?

Simon Property Group, Inc.

(SPG) is the more profitable company, earning 72. 5% net margin versus 2. 1% for Iron Mountain Incorporated — meaning it keeps 72. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SPG leads at 49. 9% versus 3. 3% for WELL. At the gross margin level — before operating expenses — SPG leads at 85. 7%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

07

Is IRM or WELL or VTR or EXR or SPG more undervalued right now?

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Simon Property Group, Inc. (SPG) is the more undervalued stock at a PEG of 0. 96x versus Extra Space Storage Inc. 's 6. 91x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Extra Space Storage Inc. (EXR) trades at 30. 1x forward P/E versus 118. 3x for Ventas, Inc. — 88. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for EXR: 6. 7% to $149. 13.

08

Which pays a better dividend — IRM or WELL or VTR or EXR or SPG?

In this comparison, EXR (4.

6% yield), IRM (2. 3% yield), VTR (2. 1% yield), WELL (1. 3% yield) pay a dividend. SPG does not pay a meaningful dividend and should not be held primarily for income.

09

Is IRM or WELL or VTR or EXR or SPG better for a retirement portfolio?

For long-horizon retirement investors, Ventas, Inc.

(VTR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 01), 2. 1% yield). Both have compounded well over 10 years (VTR: +67. 4%, SPG: +32. 2%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

10

What are the main differences between IRM and WELL and VTR and EXR and SPG?

Both stocks operate in the Real Estate sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: IRM is a mid-cap quality compounder stock; WELL is a mid-cap high-growth stock; VTR is a mid-cap high-growth stock; EXR is a mid-cap income-oriented stock; SPG is a mid-cap deep-value stock. IRM, WELL, VTR, EXR pay a dividend while SPG does not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.

Find Stocks Like These

Explore pre-built screens for each stock's profile, or build a custom screen to find stocks that outperform all of them.

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IRM

High-Growth Disruptor

  • Sector: Real Estate
  • Market Cap > $100B
  • Revenue Growth > 10%
  • Gross Margin > 33%
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WELL

High-Growth Compounder

  • Sector: Real Estate
  • Market Cap > $100B
  • Revenue Growth > 20%
  • Net Margin > 7%
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VTR

High-Growth Disruptor

  • Sector: Real Estate
  • Market Cap > $100B
  • Revenue Growth > 11%
  • Dividend Yield > 0.8%
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EXR

Dividend Mega-Cap Quality

  • Sector: Real Estate
  • Market Cap > $100B
  • Revenue Growth > 5%
  • Net Margin > 17%
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SPG

Quality Mega-Cap Compounder

  • Sector: Real Estate
  • Market Cap > $100B
  • Revenue Growth > 6%
  • Net Margin > 43%
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Custom Screen

Beat Both

Find stocks that outperform IRM and WELL and VTR and EXR and SPG on the metrics below

Revenue Growth>
%
(IRM: 21.6% · WELL: 40.3%)
Net Margin>
%
(IRM: 3.8% · WELL: 12.3%)
P/E Ratio<
x
(IRM: 268.8x · WELL: 154.2x)

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