Iron Mountain (IRM) Shares Outstanding (Diluted) (2009 - 2026)
Iron Mountain's Shares Outstanding (Diluted) was 299.85 million in Q2 2026, up 1.5% from 295.36 million a year earlier and up 0.3% from the prior quarter.
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Analysis
Iron Mountain (IRM) Shares Outstanding (Diluted) (2009 - 2026) Analysis & Trends
For FY2025, Shares Outstanding (Diluted) at Iron Mountain came in at 297.82 million, up 0.5% from FY2024.
- Shares Outstanding (Diluted) has now increased for 13 consecutive years, with a five-year compound annual growth rate of 0.6% (FY2020 to FY2025).
- In earlier years, Shares Outstanding (Diluted) was 296.23 million in FY2024 (+0.8%), 293.97 million in FY2023 (+0.5%), 292.44 million in FY2022 (+0.5%) and 290.98 million in FY2021 (+0.8%).
- The Q2 2026 figure marks the highest quarterly Shares Outstanding (Diluted) in data going back to Q1 2009.
- Compared with a year earlier, Shares Outstanding (Diluted) has increased for four straight quarters, with growth averaging 0.6% over the last eight quarters.
- The best year-over-year quarter for Shares Outstanding (Diluted) over five years was Q2 2026 (growth of 1.5%); the worst was Q3 2024 (a decline of 0.2%).
- Per Business Quant data, IRM's Shares Outstanding (Diluted) in the three quarters before Q2 2026 was 298.83 million (Q1 2026), 297.82 million (Q4 2025) and 297.98 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Dil.) (Qtr) |
|---|---|---|---|---|---|
| 1 | Accenture | 132.79 Bn | 93.20 Bn | 6.13 Bn | 615.59 Mn |
| 2 | Cintas | 77.24 Bn | 76.43 Bn | 1.48 Bn | 406.20 Mn |
| 3 | Iron Mountain | 33.76 Bn | 33.28 Bn | 1.07 Bn | 299.85 Mn |
| 4 | APi | 17.50 Bn | 14.54 Bn | 703.00 Mn | 437.00 Mn |
| 5 | Aramark | 14.64 Bn | 12.66 Bn | 430.34 Mn | 268.54 Mn |
| 6 | Rollins | 14.51 Bn | 14.06 Bn | 569.95 Mn | 481.39 Mn |
| 7 | UL Solutions | 13.33 Bn | 12.11 Bn | 417.00 Mn | 204.00 Mn |
| 8 | Gartner | 11.67 Bn | 5.36 Bn | 1.19 Bn | 66.58 Mn |
| 9 | Rentokil Initial | 10.08 Bn | 3.42 Bn | - | 507.00 Mn |
| 10 | Tetra Tech | 8.48 Bn | 7.59 Bn | 243.21 Mn | 259.78 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 299.85 Mn |
| Mar 31, 2026 | 298.83 Mn |
| Dec 31, 2025 | 297.82 Mn |
| Sep 30, 2025 | 297.98 Mn |
| Jun 30, 2025 | 295.36 Mn |
| Mar 31, 2025 | 297.26 Mn |
| Dec 31, 2024 | 296.23 Mn |
| Sep 30, 2024 | 293.60 Mn |
| Jun 30, 2024 | 295.84 Mn |
| Mar 31, 2024 | 295.22 Mn |
| Dec 31, 2023 | 293.97 Mn |
| Sep 30, 2023 | 294.27 Mn |
| Jun 30, 2023 | 293.53 Mn |
| Mar 31, 2023 | 293.05 Mn |
| Dec 31, 2022 | 292.44 Mn |
| Sep 30, 2022 | 292.55 Mn |
| Jun 30, 2022 | 292.49 Mn |
| Mar 31, 2022 | 291.85 Mn |
| Dec 31, 2021 | 290.98 Mn |
| Sep 30, 2021 | 291.48 Mn |
API Access
Iron Mountain Shares Outstanding (Diluted) API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=shares-outstanding-diluted&ticker=IRM&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "shares-outstanding-diluted", "ticker": "IRM", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=shares-outstanding-diluted&ticker=IRM&period=max&api_key=YOUR_API_KEY");
const data = await res.json();