StocksInsight

IRM Stock vs the S&P 500: Returns, Risk and Crash History

Iron Mountain Incorporated, real estate (market value $34.7 billion), an S&P 500 member: how it compared with the S&P 500, how it behaved in every crash since 2008, its risk‑adjusted returns and what analysts said. Returns to Oct 30, 2026; analyst data as of Nov 9, 2026.

Published Updated 4 min readHow we research

What changed since Nov 2

Exent re-checks this page every day. Ratings appear 30 days after they are published; the top‑ranked analysts’ calls are not counted here, they are in Gems.

100% Buy ratings (was 88%)7 analysts covering (was 8)

Key takeaways

  • IRM returned +208.5% over the 5 years to Oct 30, 2026 versus +75.9% for the S&P 500: it beat the index.
  • Its 5-year Sharpe ratio was 0.78 against 0.58 for the S&P 500.
  • Its deepest crisis drawdown was −55.7% in the global financial crisis (2007–09) (S&P 500: −56.5%).
  • Five‑year volatility was 29.6% and beta 1.18.
  • 7 analysts rated it in the past year; 100% of their latest calls were Buy.
  • IRM beat earnings estimates in 7 of its last 12 reports; the stock moved 5.9% on average, up or down, around each report.

What do the best‑ranked analysts on IRM say now? See it in Exent Gems →

Did IRM beat the S&P 500?

Over the 5 years to Oct 30, 2026, Iron Mountain Incorporated (IRM) returned +208.5% including dividends, versus +75.9% for the S&P 500 (SPY). It beat the index by 132.6 percentage points, or +25.3% a year against +12.0%.

PeriodIRMS&P 500IRM per yearS&P 500 per yearResult
1 year+17.0%+12.0%+17.0%+12.0%Beat
3 years+117.1%+87.4%+29.5%+23.3%Beat
5 years+208.5%+75.9%+25.3%+12.0%Beat
10 years+493.7%+316.3%+19.5%+15.3%Beat
  • 1 year
    IRM
    +17.0%
    S&P 500
    +12.0%
    IRM per year
    +17.0%
    S&P 500 per year
    +12.0%
    Result
    Beat
  • 3 years
    IRM
    +117.1%
    S&P 500
    +87.4%
    IRM per year
    +29.5%
    S&P 500 per year
    +23.3%
    Result
    Beat
  • 5 years
    IRM
    +208.5%
    S&P 500
    +75.9%
    IRM per year
    +25.3%
    S&P 500 per year
    +12.0%
    Result
    Beat
  • 10 years
    IRM
    +493.7%
    S&P 500
    +316.3%
    IRM per year
    +19.5%
    S&P 500 per year
    +15.3%
    Result
    Beat

Total return with dividends reinvested, from month-end prices to Oct 30, 2026. Beating the index on raw return is only half the story: the next section adjusts for the risk taken. See also how to beat the S&P 500.

IRM is in the S&P 500 (members as of Oct 20, 2026); the list shows every member’s return against the index.

What Wall Street analysts say about IRM

In the 12 months to 30 days ago, 7 analysts published 84 ratings on IRM. Their latest calls were 100% Buy, 0% Hold and 0% Sell. 2 of them rank 4★ or higher in Exent’s analyst scoring, which is based on each analyst’s past price‑target hit rate and returns.

The consensus 12‑month price target was $142.75 (range $132.00–$155.00), +28.9% from the last price. Remember that the average analyst’s target is hit only about half the time: how accurate are price targets?

Top‑ranked analyst coveringFirmStarsPrice‑target hit rate
??????4.7★36.1%
Tobey SommerTruist Financial4.5★51.9%

Other analysts covering IRM: Justin Hauke · David Paige

Ratings are shown with a 30‑day delay. Who the top‑ranked analysts on IRM are, their live calls and the median target of only the top‑rated analysts are in Exent Gems.

The average analyst’s target is reached about 53.1% of the time; Exent Gems is built on the top 50 of Exent’s ranking,where some reached 90% or more over the last two years. Unlock the top 50 analysts.

IRM returns by year vs the S&P 500

IRM beat the S&P 500 in 5 of the 9 full calendar years shown.

YearIRMS&P 500Difference
2026 (to Oct 30, 2026)+43.7%+11.7%+32.0%
2025−18.2%+17.7%−35.9%
2024+54.5%+24.9%+29.6%
2023+46.5%+26.2%+20.3%
2022−0.1%−18.2%+18.1%
2021+87.8%+28.7%+59.1%
2020+1.0%+18.3%−17.3%
2019+5.9%+31.2%−25.3%
2018−8.0%−4.6%−3.4%
2017+23.6%+21.7%+1.9%

IRM risk-adjusted returns: Sharpe, Sortino and volatility

Over 5 years, IRM had a Sharpe ratio of 0.78 against 0.58 for the S&P 500, so it earned more return per unit of risk than the index. Its annualized volatility was 29.9% and its beta 1.18: it tended to move about 1.2× as much as the market.

MetricIRMS&P 500
Annual return+25.3%+12.0%
Volatility (annualized)29.9%15.5%
Sharpe ratio0.780.58
Sortino ratio1.390.91
Max drawdown (month-end)−30.1%−23.9%
Beta to the S&P 5001.181.00

Sharpe divides return above cash by total volatility; Sortino counts only downside volatility. Both use monthly returns and the 1–3 month T‑bill ETF (BIL) as the risk‑free rate.

How IRM behaved in past crashes

IRM’s deepest fall in the crises below was −55.7% in the global financial crisis (2007–09), against −56.5% for the S&P 500. The last column turns that into money: what a $100,000 position would have lost from peak to trough.

CrisisIRMS&P 500Loss on $100,000
Global financial crisis (2007–09)−55.7%−56.5%−$55,710
2018 trade-war selloff−15.1%−20.2%−$15,120
COVID crash (Feb–Mar 2020)−35.0%−34.1%−$34,980
2022 inflation bear market−24.5%−25.4%−$24,480
2025 tariff selloff−17.7%−19.0%−$17,720
WindowIRM max drawdown
Last 1 year−25.2%
Last 3 years−39.0%
Last 5 years−39.0%
Last 10 years−48.1%

Peak‑to‑trough declines from daily prices inside each crisis window. A crash replay does not predict the next crisis; it shows how much room a holding needs. Run the same replay on a whole portfolio with the crash test.

What moves with IRM, and what doesn’t

Correlation runs from −1 (moves opposite) to +1 (moves in lockstep). Over the last 60 months of monthly returns, IRM’s correlation with the S&P 500 was 0.61, with the Nasdaq‑100 0.50, with long Treasuries (TLT) 0.34 and with gold (GLD) 0.21.

Adding a 5% IRM position to an S&P 500 portfolio would have moved its 5‑year volatility from 15.5% to 15.6%.

Least correlated large capsCorrelationMost correlated large capsCorrelation
MRK−0.08PWR0.68
REGN−0.02CSX0.64
MRNA0.02EQIX0.61
SNOW0.02CAT0.56
PLTR0.07UNP0.54

Holdings that are highly correlated behave like one position in a selloff. See how to find hidden overlap.

Latest IRM upgrades, downgrades and price‑target changes

DateRating and targetAnalyst
Oct 5Target raised
Buy
Target $155, was $153
George Tong
Goldman Sachs

Named analysts’ rating and price‑target changes on IRM in the 5 weeks to Oct 12, 2026, shown 30 days after publication (the free analysts’ calls 3 days after). The top‑ranked analysts’ calls are in Exent Gems. See all of the latest analyst upgrades and downgrades.

Do analysts get IRM right?

Of the 113 analyst price targets on IRM set from 2019 until a year ago, 67.3% were reached within 12 months (data to Oct 20, 2026), 1.3 points below the 68.6% hit rate of the median stock in Exent’s study of 794 stocks. Targets that were reached took a median of 114 days. The median target sat 11.9% above the share price on the day it was set.

Where analysts said IRM would be by now: a year ago, 4 analysts had a price target on IRM, and the median of their latest targets was $124.00. On Oct 20, 2026 IRM closed at $113.08, 8.8% below it.

67.3%of targets reached within 12 monthsMedian stock: 68.6%
114 daysmedian time to reach a target
−8.8%price now vs the median target set a year ago
AfterCallsMove on the call3 months vs S&P 500
Upgrades of IRM3+3.3%+11.7%
Upgrades, all stocks11,514+2.5%+3.4%

The move on the call runs from the close before the rating change to the close after it; the last column is the stock’s return minus the S&P 500’s over the next three months. Averages of rating changes on IRM through Sep 15, 2026; analysts are not named here. Do analyst upgrades move stocks?

How IRM moves after earnings

IRM beat the consensus earnings‑per‑share estimate in 7 of its last 12 quarterly reports, through the one on Aug 5, 2026, and the revenue estimate in 8 of 12. From the close before each report to the close after it, the stock moved 5.9% on average, up or down, against 6.8% for the average report across the 1,002 US stocks Exent tracks. It rose after 6 of the 12 reports. In 2 of the 7 beats the stock still fell.

7/12earnings beats
±5.9%average move per report
6/12reports followed by a rise
ReportEPS vs estimateRevenue vs estimateStock move
Aug 5, 2026$0.60 vs $0.54+3.1%−2.8%
Apr 30, 2026$0.60 vs $0.50+4.0%+11.1%
Feb 12, 2026$0.61 vs $0.59+2.0%+9.6%
Nov 5, 2025$0.54 vs $0.59+0.0%−2.4%
Aug 6, 2025$0.48 vs $0.50+1.7%−3.9%
May 1, 2025$0.43 vs $0.40−0.1%+6.8%
Feb 13, 2025$0.50 vs $0.53−1.2%−7.1%
Nov 6, 2024$0.44 vs $0.48+0.2%−7.0%

Reported earnings per share against the consensus estimate, revenue surprise in percent, and the stock’s price change over the two sessions around the report. How stocks move after earnings

Where IRM’s revenue comes from

In fiscal 2025 (the year to Dec 31, 2025), IRM’s largest reported region was the United States, with 85.5% of its $5.3 billion revenue. By region: United States 85.5%; United Kingdom 8.8%; Canada 5.7%.

By business, the largest segment was Global Records and Information Management Business, with 86.8% of $6.1 billion revenue (+6.3% on the year before).

  • United States85.5%
  • United Kingdom8.8%
  • Canada5.7%
SegmentRevenueShareGrowth
Global Records and Information Management Business$5.3 billion86.8%+6.3%
Global Data Center Business$803.4 million13.2%+29.6%

From IRM’s annual filings; segment growth compares fiscal 2025 with the year before. Regions are as each company reports them, so one company’s “Asia Pacific” is not another’s. China counts the regions a company reports as China, Greater China or Hong Kong; a separately reported Taiwan is not counted. Which S&P 500 companies depend most on China?

Members of Congress who traded IRM

As of Oct 20, 2026, 11 members of Congress had disclosed 33 trades in IRM (15 buys and 18 sales) in STOCK Act disclosures filed with the House and Senate. The latest public trade is dated Dec 18, 2025.

Trade dateMemberTypeAmount
Dec 18, 2025Markwayne MullinSale$1,001–$15,000
Dec 18, 2025Markwayne MullinSale$15,001–$50,000
Sep 29, 2025Ro KhannaBuy$1,001–$15,000
Feb 3, 2025Markwayne MullinBuy$1,001–$15,000
Jan 2, 2025Markwayne MullinBuy$15,001–$50,000
Jan 2, 2025Markwayne MullinBuy$15,001–$50,000
Jan 10, 2024Ro KhannaSale$1,001–$15,000
Dec 11, 2023Thomas CarperSale$1,001–$15,000
Jul 12, 2023Daniel GoldmanSale$1,001–$15,000
Feb 21, 2023Thomas CarperSale$1,001–$15,000

Amounts are the ranges members report, not exact values. The STOCK Act gives members up to 45 days to disclose a trade, so trades appear weeks after they are made. See every member’s disclosed trades

Are IRM insiders buying or selling?

In the 12 months to Oct 20, 2026, IRM insiders made 1 open‑market purchase worth $2,954 by 1 insider and 65 sales worth $116.9 million, according to SEC Form 4 filings.

After the 5 insider purchases of $10,000 or more since 2012, IRM lagged the S&P 500 by an average of 8.5 percentage points over the next 12 months; 20% of them were followed by a beat. Across all 17,865 insider purchases in Exent’s study, the average was +17.2% and the median +1.0% against the index.

Q1 ’25
Q2 ’25
Q3 ’25
Q4 ’25
Q1 ’26
Q2 ’26
Q3 ’26
Q4 ’26
DateInsiderRoleValue
Nov 19, 2025Kelly Christie B.Director$2,954
Feb 20, 2018Verrecchia Alfred JDirector$162,450
Sep 5, 2014Deninger Paul FDirector$502,880
Jun 7, 2013Antenucci Ted RDirector$168,200
Jun 7, 2013Mckeon Brian PChief Financial Officer$103,010

The table lists the latest open‑market purchases on record, leaving out the last 30 days. The chart counts Form 4 purchases and sales by calendar quarter. Purchases are open‑market buys; sales include planned sales under 10b5‑1 trading plans. Do insider buys beat the market?

How much of IRM is sold short?

As of the Sep 30, 2026 settlement date, 2.37% of IRM’s float was sold short: 7.0 million shares, or 4.2 days of average trading volume to cover. A year earlier (Oct 15, 2025) it was 2.52%. The median across the 997 US stocks Exent tracks was 4.77%, so IRM is less heavily shorted than most.

  • Apr 30, 20262.59%
  • May 29, 20262.48%
  • Jun 30, 20262.53%
  • Jul 31, 20262.84%
  • Aug 31, 20262.19%
  • Sep 30, 20262.37%

From FINRA short‑interest reports, filed twice a month; the bars show the short share of the float at each month‑end. Days to cover divides the shares short by the average daily volume. The most shorted stocks

How many institutions own IRM?

At the end of Q2 2026 (Jun 30, 2026), 1,214 institutions reported holding IRM in 13F filings, up 90 from the quarter before and up from 1,084 a year earlier. Their reported holdings add up to 87.8% of IRM’s shares. In the quarter 605 institutions added to their positions and 392 cut them.

1,21413F holders
157new positions
73positions closed
87.8%of shares held by 13F filers

Investment managers with over $100 million in US equities file 13F reports within 45 days of each quarter end, so this is the latest complete quarter. Holdings can add up to more than 100% when shares are lent and counted twice. Which stocks institutions are buying and selling

Is IRM diluting shareholders?

IRM’s diluted share count rose 3.2% over the five fiscal years to fiscal 2025 and rose 0.5% in fiscal 2025 alone. Each share now owns a smaller slice of the company. The median change across the 1,005 US stocks Exent tracks was −0.1%.

Stock‑based compensation was $140.3 million in fiscal 2025, 2.0% of revenue. IRM did not buy back shares in fiscal 2025.

+0.5%share count, 1 year
+3.2%share count, 5 years
2.0%stock pay as % of revenue
0.00%buyback yield

Weighted‑average diluted shares from IRM’s annual income statements; stock‑based compensation and buybacks from its cash‑flow statement. Stock dilution and stock‑based compensation, explained

IRM financial health scores

In Exent’s Oct 20, 2026 snapshot, IRM’s Piotroski F‑score was 6 out of 9; 62% of scored stocks reach 6 or more. The Altman Z‑score is not meaningful for real estate companies, so it is left out.

The Altman Z‑score combines five balance‑sheet and earnings ratios into one bankruptcy‑risk score: below 1.81 is the distress zone, 1.81–2.99 grey, above 2.99 safe. It is not meaningful for banks, insurers and REITs. The Piotroski F‑score counts nine yes/no tests of profitability, leverage and efficiency; 8–9 is strong, 0–2 weak. Both come from the latest annual statements. Which stocks have the highest bankruptcy risk?

What IRM talks about on earnings calls

On its latest earnings call (Aug 5, 2026), IRM’s executives and analysts mentioned AI 11 times, against 5 on the call before (Apr 30, 2026); the average across 455 S&P 500 calls that quarter was 12.9. After AI, the most mentioned topic was data centers (29). Tariffs and recession did not come up.

MentionsAug ’26Apr ’26Feb ’26Nov ’25
AI11555
AI agents3001
Data centers29202122
Tariffs0000
China0000
Recession0000
  • AI
    Aug ’26
    11
    Apr ’26
    5
    Feb ’26
    5
    Nov ’25
    5
  • AI agents
    Aug ’26
    3
    Apr ’26
    0
    Feb ’26
    0
    Nov ’25
    1
  • Data centers
    Aug ’26
    29
    Apr ’26
    20
    Feb ’26
    21
    Nov ’25
    22
  • Tariffs
    Aug ’26
    0
    Apr ’26
    0
    Feb ’26
    0
    Nov ’25
    0
  • China
    Aug ’26
    0
    Apr ’26
    0
    Feb ’26
    0
    Nov ’25
    0
  • Recession
    Aug ’26
    0
    Apr ’26
    0
    Feb ’26
    0
    Nov ’25
    0

Word counts in the full transcript of each call, prepared remarks and Q&A, newest first. “AI” also counts generative AI and large language models; “AI agents” counts agentic AI. Which companies talk most about AI?

Which ETFs hold IRM?

As of Oct 20, 2026, 41 of the 304 ETFs Exent tracks held IRM. Its largest weight is in SCHH (Schwab U.S. REIT ETF), at 2.47% of the fund.

ETFFundWeight of IRM
SCHHSchwab U.S. REIT ETF2.47%
VNQVanguard Real Estate Index Fund ETF Shares2.19%
VOTVanguard Mid-Cap Growth Index Fund0.74%
IWSiShares Russell Mid-Cap Value ETF0.33%
VOVanguard Mid-Cap Index Fund ETF Shares0.31%
IWRiShares Russell Mid-Cap ETF0.25%
RSPInvesco S&P 500 Equal Weight ETF0.19%
MTUMiShares MSCI USA Momentum Factor ETF0.18%

Owning several of these funds stacks the same position. How much do VOO, QQQ and VTI overlap?

The right benchmark for IRM

Exent matches every holding to the index with the most similar risk. For IRM that is SPY (the S&P 500). Comparing a holding with an index that carries very different risk makes good results look bad and risky ones look clever. Read why the S&P 500 is the wrong benchmark for most portfolios.

Other real estate stocks

TickerName5‑year returnVolatility (5y)
WELLWelltower Inc.+228.9%23.6%
PLDPrologis, Inc.+2.3%26.9%
EQIXEquinix, Inc.+33.8%28.0%
AMTAmerican Tower Corporation−21.7%27.4%
SPGSimon Property Group, Inc.+93.8%26.5%
DLRDigital Realty Trust, Inc.+35.7%29.5%
PSAPublic Storage+22.2%23.8%
ORealty Income Corporation+7.6%18.9%

Data and methodology

Returns are total returns from month‑end adjusted closing prices (dividends reinvested) through Oct 30, 2026. Crisis drawdowns and trailing maximum drawdowns use daily prices. Analyst coverage counts ratings published in the last 12 months, shown with a 30‑day delay. Full method: Exent methodology.

Company data as of Oct 20, 2026. The move around an earnings report runs from the close before it to the close after it; a price target counts as hit when the stock closed at or beyond it within 12 months (Exent analyst data). Revenue by region and segment, share counts and executive pay come from company filings; insider trades from SEC Form 4, short interest from FINRA, institutional ownership from 13F filings, Congress trades from STOCK Act disclosures filed with the House and Senate, federal contracts from USAspending.gov. Filings from the last 30 days are shown as counts only.

Past performance does not guarantee future results. Historical figures are calculated by Exent from market data and are for education only; they are not investment advice or a recommendation to buy or sell any security.

Check IRM with Exent Gems

Wall Street’s average IRM price target is 28.9% above the latest share price. See what the best‑ranked analysts on IRM say now in Exent Gems.

  1. Exent ranks Wall Street analysts by their past price‑target hit rate and returns, and keeps the best‑ranked few.
  2. Gems shows who the top‑ranked analysts covering IRM are, their live calls and the median target of only the top‑rated analysts.
  3. Gems flags the stocks where several top‑ranked analysts agree: a starting point for your own research, not a promise.

Exent is our product. Educational content, not investment advice.

Frequently asked questions

Yes. IRM returned +493.7% (+19.5% a year) over the 10 years to Oct 30, 2026, versus +316.3% (+15.3% a year) for the S&P 500, including dividends.

Yes. As of Oct 20, 2026, IRM (Iron Mountain Incorporated) is one of the 503 stocks in the S&P 500.

IRM fell −55.7% from peak to trough during the global financial crisis (2007–09), versus −56.5% for the S&P 500.

IRM fell −35.0% from peak to trough during the covid crash (feb–mar 2020), versus −34.1% for the S&P 500.

IRM fell −24.5% from peak to trough during the 2022 inflation bear market, versus −25.4% for the S&P 500.

Over the 5 years to Oct 30, 2026, IRM’s Sharpe ratio was 0.78 and its Sortino ratio 1.39, versus 0.58 and 0.91 for the S&P 500.

IRM’s 5‑year annualized volatility was 29.6%, higher than the S&P 500’s 17.0%, with a beta of 1.18.

Among large US stocks, the lowest correlations with IRM over the last 60 months were MRK (−0.08), REGN (−0.02), MRNA (0.02). Its correlation with long Treasuries (TLT) was 0.34 and with gold (GLD) 0.21.

IRM beat the consensus earnings-per-share estimate in 7 of its last 12 quarterly reports through Aug 5, 2026, and the revenue estimate in 8 of 12. The stock moved 5.9% on average, up or down, from the close before each report to the close after it.

Yes. As of Oct 20, 2026, 11 members of Congress had disclosed 33 trades in IRM (15 buys and 18 sales) in STOCK Act disclosures filed with the House and Senate.

As of the Sep 30, 2026 settlement date, 2.37% of IRM’s float was sold short (7.0 million shares, 4.2 days to cover), according to FINRA short-interest reports. A year earlier it was 2.52%.

Yes. IRM’s diluted share count rose 3.2% over the five fiscal years to fiscal 2025 and rose 0.5% in the latest year. Stock-based compensation was 2.0% of revenue.

What do the best‑ranked analysts say on IRM now?

Exent ranks Wall Street analysts by their track record. Gems shows who the top‑ranked analysts on IRM are, their latest calls and the stocks where several of them agree.

See this week’s GemsLimited offer$1.95 for full access· full access

Educational content, not investment advice. Examples are illustrative; past performance does not guarantee future results.

DISCLAIMER: Exent AI is an informational research platform and does not provide investment advice, financial advice, or act as an investment adviser, broker-dealer, or fiduciary. All content, analytics, and model outputs are provided for educational and informational purposes only and should not be relied upon as a recommendation to buy, sell, or hold any financial instrument. Investing involves risk, including the possible loss of principal. Exent AI does not execute trades, hold customer funds, or provide brokerage services. Past performance and hypothetical results are not indicative of future results. Third-party data and AI-generated outputs may be incomplete or inaccurate.