Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership1,272,855 shares
Latest Disclosed Value $ 130,013,878
Hsbc Holdings Plc ownership in I5M / Iron Mountain Incorporated

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 1,272,855 shares of Iron Mountain Incorporated (DE:I5M) valued at $113,004,067 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 1,055,775 shares of Iron Mountain Incorporated. This represents a change in shares of 20.56% during the quarter. The current value of the position is $142,368,832 USD.

Hsbc Holdings Plc has a history of taking positions in derivatives of the underlying security (I5M) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:I5M / Iron Mountain Incorporated Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-30 2026-03-31 13F IRON MTN INC DEL COM 46284V101 1,272,855 217,080 20.56 130,014 48.46 0.0091
2026-03-20 2025-12-31 13F/A-1 IRON MTN INC DEL COM 46284V101 1,055,775 104,199 10.95 87,577 -9.60 0.0048
2026-03-06 2025-12-31 13F IRON MTN INC DEL COM 46284V101 1,055,775 104,199 10.95 87,577 -9.60 0.0040
2025-11-13 2025-09-30 13F IRON MTN INC DEL COM 46284V101 951,576 167,280 21.33 96,874 20.53 0.0534
2025-08-13 2025-06-30 13F IRON MTN INC DEL COM 46284V101 784,296 -35,566 -4.34 80,374 14.04 0.0483
2025-05-14 2025-03-31 13F IRON MTN INC DEL COM 46284V101 819,862 76,314 10.26 70,478 -9.64 0.0436
2025-02-14 2024-12-31 13F IRON MTN INC DEL COM 46284V101 743,548 46,060 6.60 78,000 -5.75 0.0454
2024-11-14 2024-09-30 13F IRON MTN INC DEL COM 46284V101 697,488 -8,304 -1.18 82,761 30.77 0.0482
2024-08-12 2024-06-30 13F IRON MTN INC DEL COM 46284V101 705,792 118,410 20.16 63,285 34.36 0.0387
2024-05-15 2024-03-31 13F IRON MTN INC DEL COM 46284V101 587,382 167,661 39.95 47,100 60.20 0.0319
2024-02-12 2023-12-31 13F IRON MTN INC DEL COM 46284V101 419,721 59,135 16.40 29,402 36.92 0.0256
2023-11-13 2023-09-30 13F IRON MTN INC DEL COM 46284V101 360,586 -8,606 -2.33 21,473 2.52 0.0223
2023-08-11 2023-06-30 13F IRON MTN INC DEL COM 46284V101 369,192 52,342 16.52 20,945 25.07 0.0213
2023-05-15 2023-03-31 13F IRON MTN INC DEL COM 46284V101 316,850 -206,181 -39.42 16,748 -35.65 0.0201
2023-02-14 2022-12-31 13F IRON MTN INC DEL COM 46284V101 523,031 264,202 102.08 26,024 128.00 0.0299
2022-11-14 2022-09-30 13F IRON MTN INC DEL COM 46284V101 258,829 -6,485 -2.44 11,414 -11.43 0.0186
2022-08-11 2022-06-30 13F IRON MTN INC COM 46284V101 265,314 -2,001 -0.75 12,887 -13.08 0.0180
2022-05-16 2022-03-31 13F IRON MTN INC COM 46284V101 267,315 -59,326 -18.16 14,826 -13.53 0.0180
2022-02-11 2021-12-31 13F IRON MTN INC COM 46284V101 326,641 -102,532 -23.89 17,146 -8.88 0.0158
2021-11-12 2021-09-30 13F IRON MTN INC COM 46284V101 429,173 -278,956 -39.39 18,817 -37.26 0.0189
2021-08-13 2021-06-30 13F IRON MTN INC COM 46284V101 708,129 270,916 61.96 29,990 84.75 0.0320
2021-05-14 2021-03-31 13F IRON MTN INC COM 46284V101 437,213 -80,403 -15.53 16,233 6.65 0.0191
2021-02-25 2020-12-31 13F/A-1 IRON MTN INC COM 46284V101 517,616 103,215 24.91 15,221 36.65 0.0203
2021-02-12 2020-12-31 13F IRON MTN INC COM 46284V101 616,916 202,515 18,127 4,304.0161
2020-11-12 2020-09-30 13F IRON MTN INC COM 46284V101 414,401 126,352 43.86 11,139 48.16 0.0178
2020-08-14 2020-06-30 13F IRON MTN INC COM 46284V101 288,049 -55,945 -16.26 7,518 -9.43 0.0143
2020-05-15 2020-03-31 13F IRON MTN INC COM 46284V101 343,994 49,861 16.95 8,301 -10.30 0.0193
2020-02-14 2019-12-31 13F IRON MTN INC COM 46284V101 294,133 10,343 3.64 9,254 0.66 0.0161
2019-11-14 2019-09-30 13F IRON MTN INC COM 46284V101 283,790 -77,258 -21.40 9,193 -18.65 0.0172
2019-08-13 2019-06-30 13F IRON MTN INC COM 46284V101 361,048 -237,505 -39.68 11,301 -46.76 0.0215
2019-05-15 2019-03-31 13F IRON MTN INC COM 46284V101 598,553 385,275 180.64 21,225 207.03 0.0387
2019-02-13 2018-12-31 13F IRON MTN INC COM 46284V101 213,278 -49,826 -18.94 6,913 -23.89 0.0128
2018-11-13 2018-09-30 13F IRON MTN INC COM 46284V101 263,104 51,096 24.10 9,083 22.38 0.0146
2018-08-10 2018-06-30 13F IRON MTN INC COM 46284V101 212,008 -82,296 -27.96 7,422 -23.26 0.0132
2018-05-11 2018-03-31 13F IRON MTN INC COM 46284V101 294,304 -9,320 -3.07 9,671 -15.58 0.0144
2018-02-14 2017-12-31 13F IRON MTN INC COM 46284V101 303,624 60,900 25.09 11,456 21.33 0.0166
2017-11-14 2017-09-30 13F IRON MTN INC COM 46284V101 242,724 53,833 28.50 9,442 45.49 0.0151
2017-08-14 2017-06-30 13F IRON MTN INC COM 46284V101 188,891 11,072 6.23 6,490 2.38 0.0119
2017-05-15 2017-03-31 13F IRON MTN INC COM 46284V101 177,819 -38,796 -17.91 6,339 -9.91 0.0133
2017-02-09 2016-12-31 13F IRON MTN INC COM 46284V101 216,615 35,292 19.46 7,036 3.35 0.0164
2016-11-14 2016-09-30 13F IRON MTN INC COM 46284V101 181,323 7,128 4.09 6,808 -1.82 0.0169
2016-08-12 2016-06-30 13F IRON MTN INC COM 46284V101 174,195 8,587 5.19 6,934 23.58 0.0191
2016-05-13 2016-03-31 13F IRON MTN INC COM 46284V101 165,608 -5,539 -3.24 5,611 21.16 0.0158
2016-02-12 2015-12-31 13F IRON MTN INC COM 46284V101 171,147 12,335 7.77 4,631 -5.84 0.0112
2015-11-12 2015-09-30 13F IRON MTN INC COM 46284V101 158,812 -40,744 -20.42 4,918 -20.51 0.0124
2015-08-13 2015-06-30 13F IRON MTN INC COM 46284V101 199,556 -12,448 -5.87 6,187 -20.01 0.0126
2015-05-14 2015-03-31 13F IRON MTN INC COM 46284V101 212,004 3,065 1.47 7,735 -4.32 0.0149
2015-02-13 2014-12-31 13F IRON MTN COM 462846106 208,939 110,113 111.42 8,084 150.51 0.0168
2014-11-18 2014-09-30 13F IRON MTN COM 462846106 98,826 6,868 7.47 3,227 -1.01 0.0068
2014-08-14 2014-06-30 13F IRON MTN COM 462846106 91,958 -570 -0.62 3,260 27.79 0.0070
2014-05-14 2014-03-31 13F IRON MTN COM 462846106 92,528 15,400 19.97 2,551 8.97 0.0061
2014-02-14 2013-12-31 13F IRON MTN COM 462846106 77,128 -242,269 -75.85 2,341 -72.88 0.0061
2013-11-14 2013-09-30 13F IRON MTN COM 462846106 319,397 34,087 11.95 8,631 13.69 0.0236
2013-10-10 2013-06-30 13F/A-1 IRON MTN COM 462846106 285,310 231,526 430.47 7,592 288.74 0.0230
2013-08-14 2013-06-30 13F IRON MTN COM 462846106 285,310 7,592
2013-10-10 2013-03-31 13F/A-1 IRON MTN COM 462846106 53,784 19,635 57.50 1,953 84.25 0.0071
2013-05-22 2013-03-31 13F IRON MTN COM 462846106 63,583 2,309
2013-06-17 2012-12-31 13F/A-1 IRON MTN COM 462846106 43,149 17,945 1,339 0.0052
2013-10-10 2012-12-31 13F/A-2 IRON MTN COM 462846106 34,149 8,945 35.49 1,060 23.26 0.0041
2013-06-21 2012-09-30 13F/A-1 IRON MTN COM 462846106 34,204 7,136 1,167 0.0046
2013-10-11 2012-09-30 13F/A-2 IRON MTN COM 462846106 25,204 -1,864 -6.89 860 -3.59 0.0034
2013-10-11 2012-06-30 13F/A-1 IRON MTN COM 462846106 27,068 -3,608 -11.76 892 1.02 0.0040
2013-10-11 2012-03-31 13F/A-1 IRON MTN COM 462846106 30,676 30,676 883 0.0039
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-05-14 2021-03-31 13F IRON MTN INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-25 2020-12-31 13F/A IRON MTN INC COM Call 87,200 -22.56 2,552 -16.19 n/a n/a n/a
2020-11-12 2020-09-30 13F IRON MTN INC COM Call 112,600 3,045 n/a n/a n/a
2020-08-14 2020-06-30 13F IRON MTN INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F IRON MTN INC COM Call 1,000 -98.65 24 -98.98 n/a n/a n/a
2020-02-14 2019-12-31 13F IRON MTN INC COM Call 74,300 -28.69 2,364 -29.96 n/a n/a n/a
2019-11-14 2019-09-30 13F IRON MTN INC COM Call 104,200 0.00 3,375 3.50 n/a n/a n/a
2019-08-13 2019-06-30 13F IRON MTN INC COM Call 104,200 347.21 3,261 294.79 n/a n/a n/a
2019-05-15 2019-03-31 13F IRON MTN INC COM Call 23,300 -36.86 826 -30.94 n/a n/a n/a
2019-02-13 2018-12-31 13F IRON MTN INC COM Call 36,900 1,196 n/a n/a n/a
2018-02-14 2017-12-31 13F IRON MTN INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-09-30 13F IRON MTN INC COM Call 1,000 -96.00 39 -95.46 n/a n/a n/a
2017-08-14 2017-06-30 13F IRON MTN INC COM Call 25,000 -50.00 859 -51.85 n/a n/a n/a
2017-05-15 2017-03-31 13F IRON MTN INC COM Call 50,000 1,784 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-08-13 2021-06-30 13F IRON MTN INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F IRON MTN INC COM Put 11,800 -2.48 441 24.58 n/a n/a n/a
2021-02-25 2020-12-31 13F/A IRON MTN INC COM Put 12,100 0.00 354 8.26 n/a n/a n/a
2020-11-12 2020-09-30 13F IRON MTN INC COM Put 12,100 -90.79 327 -90.47 n/a n/a n/a
2020-08-14 2020-06-30 13F IRON MTN INC COM Put 131,400 -17.15 3,430 -8.97 n/a n/a n/a
2020-05-15 2020-03-31 13F IRON MTN INC COM Put 158,600 -61.37 3,768 -71.16 n/a n/a n/a
2020-02-14 2019-12-31 13F IRON MTN INC COM Put 410,600 -0.10 13,063 -1.87 n/a n/a n/a
2019-11-14 2019-09-30 13F IRON MTN INC COM Put 411,000 0.07 13,312 3.56 n/a n/a n/a
2019-08-13 2019-06-30 13F IRON MTN INC COM Put 410,700 458.78 12,855 393.28 n/a n/a n/a
2019-05-15 2019-03-31 13F IRON MTN INC COM Put 73,500 130.41 2,606 152.03 n/a n/a n/a
2019-02-13 2018-12-31 13F IRON MTN INC COM Put 31,900 1,034 n/a n/a n/a
2017-11-14 2017-09-30 13F IRON MTN INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F IRON MTN INC COM Put 25,000 859 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.