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IRM Iron Mountain

reit · valued with glm-5.2 medium conviction · deep-dived 2026-09-09

BUY
Intrinsic value$78.11
Price (at call)$116.08
Margin of safety -32.7%
vs market (rating basis) +20.3%

AI data-center growth story is real, but $2.25B capex against $1.54B FFO keeps AFFO thin.

The story

IRM's records management cash cow is funding an aggressive pivot into AI-driven data centers, with revenue compounding ~10.6% over five years. The problem: capex of $2.25B against $1.54B FFO means AFFO is being heavily diluted by recurring and growth capex, yet the market prices near-perfect execution at $116. Operating margins have compressed from 22% to 15%, signaling cost pressure from the data-center buildout. Rate sensitivity is elevated given the growth capex funding gap and beta above the REIT anchor.

FFO growth stays at 9% near-term given the data-center pipeline and AI demand tailwinds, with terminal growth nudged to 4.5% (just below risk-free) reflecting durable records storage annuity plus digital upside. AFFO/FFO cut from 0.68 to 0.62 because capex at $2.25B vs FFO of $1.54B implies recurring capex is consuming a larger share of cash flow than previously modeled. Failure probability slightly higher at 3% given execution risk on the massive capex program and leverage implications.

Value drivers

AFFO growth (Y1)9.0%
Terminal AFFO growth4.5%
AFFO / FFO ratio62.0%
Beta1.05
Failure probability3.0%
Cost of equity9.5%

Valuation bridge

PV of AFFO (explicit)8.64B
PV of terminal value15.33B
Equity value23.25B
÷ shares → per share$78.11

News

neutral -0.10 · 8 articles

  • Iron Mountain (IRM) Stock Gets Fair Value Boost On Higher AI Growth Assumptions
  • 3 REITs Getting Paid as Big Tech Builds Out AI
  • Iron Mountain (IRM) Down 5.7% Since Last Earnings Report: Can It Rebound?
  • Iron Mountain Expands Saudi Presence With AI Digital Partnership
  • Iron Mountain (IRM) Swings To Profit As Growth Businesses Surge
  • Realty Income's Data Center Bet: What Does It Mean for Growth?
  • Iron Mountain Chief Commercial Officer Sells 11,839 Shares for $1.5 Million
  • Iron Mountain Stock: Analyst Estimates & Ratings

Projected AFFO

YrFFOAFFOGrowthPV
11.68B 1.04B9.0% 950.68M
21.82B 1.13B8.5% 941.73M
31.97B 1.22B8.0% 928.57M
42.12B 1.31B7.5% 911.35M
52.26B 1.40B7.0% 890.29M
62.41B 1.49B6.5% 865.65M
72.56B 1.58B6.0% 837.75M
82.70B 1.67B5.5% 806.92M
92.83B 1.76B5.0% 773.54M
102.96B 1.83B4.5% 738.01M

Key risks

  • Capex funding gap: $2.25B capex vs $1.54B FFO requires external financing, raising balance sheet risk in a higher-rate environment
  • Data-center execution risk: margin compression from 22% to 15% suggests the pivot is costlier than expected
  • Rate sensitivity: elevated beta and growth-capex dependence make IRM vulnerable if rates stay higher for longer

Catalysts

  • Data-center lease announcements from hyperscaler/AI tenants driving FFO acceleration
  • Records storage pricing power providing stable AFFO floor
  • Saudi Arabia and international digital partnerships adding incremental revenue streams

History

DatePriceIntrinsicMoSRating
2026-09-09$116.08 $78.11 -32.7% BUY
2026-07-17$121.66 $73.71 -39.4% BUY
2026-06-23$133.06 $75.07 -43.6% HOLD