What is Iron Mountain's shares (diluted)?

Iron Mountain (IRM) reported shares (diluted) of 298.8M in Q1 2026.

How has Iron Mountain's shares (diluted) changed year-over-year?

Iron Mountain's shares (diluted) increased by 0.5% year-over-year, from 297.3M to 298.8M.

What is the long-term trend for Iron Mountain's shares (diluted)?

Over 4 years (2021 to 2025), Iron Mountain's shares (diluted) has grown at a 0.5% compound annual growth rate (CAGR), from 1.2B to 1.2B.

What does shares (diluted) mean?

The weighted-average shares outstanding plus all potentially dilutive shares from stock options, RSUs, convertible securities, and warrants, using the treasury stock method.

Iron Mountain IRM Shares (Diluted)

Shares (Diluted) at other companies

EnvelaELA

26M-0.1%

Open TextOTEX

248M-6.0%

Equinix, Inc.EQIX

98.7M+0.9%

Digital RealtyDLR

347.8M+4.9%

WYF

WhiteFiber, Inc. Ordinary SharesWYFI

38.4M+42.0%

TD SYNNEXSNX

79.8M-3.8%

Other financials

Income statement

See full

Revenue$1.9B+21.6%

Gross profit$1.0B+18.6%

Operating income$395.2M+55.4%

Net income$149.0M+818%

EPS (diluted)$0.48+860%

Balance sheet

See full

Cash & equivalents$250.7M+61.4%

Total debt$20.2B+13.6%

Total equity-$1.2B-73.9%

Total assets$21.5B+11.0%

Cash flow

See full

Operating cash flow$338.6M+71.6%

CapEx$518.0M-23.2%

Free cash flow-$179.5M+62.4%

Valuation

See full

Market cap$37.58B+26.2%

Enterprise value$57.51B+19.6%

P/E131.9×-531×

P/S5.2×+0.6×

Profitability

See full

Gross margin55%-1.0pp

Operating margin18%+1.8pp

Net margin3.9%+2.0pp

FCF margin-8.7%-2.2pp

Returns & leverage

See full

Return on equity70.5%-19.4pp

Debt / equity855.6×+830×

Current ratio0.8×+0.2×

Where this comes from

Reported directly by Iron Mountain in its filing.

Tagged under the XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding.

The official record: Iron Mountain’s 10-Q, filed April 30, 2026, on SEC EDGAR. View the filing →

Ask your AI about Iron Mountain's shares (diluted).

Connect your AI assistant and compare it to peers, right in your chat.

Connect your AI

Claude

Questions, answered.

What is Iron Mountain's shares (diluted)?: Iron Mountain (IRM) reported shares (diluted) of 298.8M in Q1 2026.
How has Iron Mountain's shares (diluted) changed year-over-year?: Iron Mountain's shares (diluted) increased by 0.5% year-over-year, from 297.3M to 298.8M.
What is the long-term trend for Iron Mountain's shares (diluted)?: Over 4 years (2021 to 2025), Iron Mountain's shares (diluted) has grown at a 0.5% compound annual growth rate (CAGR), from 1.2B to 1.2B.
What does shares (diluted) mean?: The weighted-average shares outstanding plus all potentially dilutive shares from stock options, RSUs, convertible securities, and warrants, using the treasury stock method.