Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership2,123,358 shares
Latest Disclosed Value $ 207,239,854
Jpmorgan Chase & Co ownership in I5M / Iron Mountain Incorporated

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 2,123,358 shares of Iron Mountain Incorporated (DE:I5M) valued at $188,511,723 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,927,935 shares of Iron Mountain Incorporated. This represents a change in shares of 10.14% during the quarter. The current value of the position is $237,497,592 USD.

Jpmorgan Chase & Co 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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)
2026-05-13 2026-03-31 13F/A-1 IRON MTN INC DEL COMMON 46284V101 2,123,358 195,423 10.14 207,240 29.59 0.0133
2026-02-11 2025-12-31 13F IRON MTN INC DEL COMMON 46284V101 1,927,935 -128,513 -6.25 159,922 -23.71 0.0100
2025-11-26 2025-09-30 13F/A-1 IRON MTN INC DEL COMMON 46284V101 2,056,448 83,450 4.23 209,634 3.59 0.0126
2025-11-07 2025-09-30 13F IRON MTN INC DEL COMMON 46284V101 2,056,448 83,450 209,634 0.0013
2025-08-12 2025-06-30 13F IRON MTN INC DEL COMMON 46284V101 1,972,998 -88,562 -4.30 202,371 14.09 0.0132
2025-05-12 2025-03-31 13F IRON MTN INC DEL COMMON 46284V101 2,061,560 311,494 17.80 177,377 -3.57 0.0130
2025-02-12 2024-12-31 13F IRON MOUNTAIN COMMON 46284V101 1,750,066 -435,804 -19.94 183,949 -29.18 0.0137
2024-12-26 2024-09-30 13F/A-1 IRON MOUNTAIN COMMON 46284V101 2,185,870 50,614 2.37 259,747 35.74 0.0197
2024-11-08 2024-09-30 13F IRON MOUNTAIN COMMON 46284V101 2,185,870 50,614 259,747 0.0198
2024-12-26 2024-06-30 13F/A-1 Iron Mountain COM 46284V101 2,135,256 -319,820 -13.03 191,362 -2.82 0.0157
2024-08-12 2024-06-30 13F Iron Mountain COM 46284V101 2,122,812 -332,264 190,246 0.0156
2024-12-26 2024-03-31 13F/A-1 Iron Mountain COMMON 46284V101 2,455,076 359,823 17.17 196,922 34.30 0.0166
2024-05-10 2024-03-31 13F Iron Mountain COMMON 46284V101 2,455,076 359,823 196,922 0.0167
2024-12-26 2023-12-31 13F/A-1 IRON MTN INC DEL COMMON 46284V101 2,095,253 509,833 32.16 146,626 55.57 0.0141
2024-02-12 2023-12-31 13F IRON MTN INC DEL COMMON 46284V101 2,095,253 509,833 146,626 0.0141
2023-11-14 2023-09-30 13F Iron Mountain RET 46284V101 1,585,420 -374,365 -19.10 94,253 -15.36 0.0104
2023-08-11 2023-06-30 13F Iron Mountain RET 46284V101 1,959,785 141,684 7.79 111,355 15.76 0.0121
2023-05-18 2023-03-31 13F/A-1 IRON MTN INC DEL COMMON 46284V101 1,818,101 3,181 0.18 96,196 106,784.44 0.0117
2023-05-11 2023-03-31 13F IRON MTN INC DEL COMMON 46284V101 1,681,269 -133,651 96,196 0.0014
2023-02-13 2022-12-31 13F Iron Mountain COMMON 46284V101 1,814,920 171,171 10.41 90 -99.88 0.0119
2022-11-14 2022-09-30 13F IRON MTN INC DEL COMMON 46284V101 1,643,749 -273,534 -14.27 72,277 -22.58 0.0104
2022-08-11 2022-06-30 13F IRON MTN INC COMMON 46284V101 1,917,283 -266,277 -12.19 93,354 -22.84 0.0130
2022-05-11 2022-03-31 13F IRON MTN INC COMMON 46284V101 2,183,560 -301,368 -12.13 120,991 -6.96 0.0146
2022-02-11 2021-12-31 13F/A-1 IRON MTN INC COMMON 46284V101 2,484,928 102,022 4.28 130,037 25.60 0.0150
2022-02-10 2021-12-31 13F IRON MTN INC COMMON 46284V101 2,484,928 102,022 130,037 0.0149
2021-11-12 2021-09-30 13F IRON MTN INC COMMON 46284V101 2,382,906 -150,410 -5.94 103,535 -3.43 0.0128
2021-08-12 2021-06-30 13F IRON MTN INC COMMON 46284V101 2,533,316 -128,322 -4.82 107,211 8.84 0.0128
2021-05-12 2021-03-31 13F IRON MTN INC COMMON 46284V101 2,661,638 -536,162 -16.77 98,506 4.49 0.0131
2021-02-19 2020-12-31 13F/A-1 IRON MTN INC COMMON 46284V101 3,197,800 261,648 8.91 94,272 19.98 0.0139
2021-02-11 2020-12-31 13F IRON MTN INC COMMON 46284V101 3,197,800 261,648 94,272 2,331.4137
2020-11-12 2020-09-30 13F/A-1 IRON MTN INC COMMON 46284V101 2,936,152 196,000 7.15 78,572 9.86 0.0132
2020-11-12 2020-09-30 13F IRON MTN INC COMMON 46284V101 2,936,152 78,572
2020-08-11 2020-06-30 13F IRON MTN INC COMMON 46284V101 2,740,152 53,662 2.00 71,518 11.86 0.0138
2020-05-12 2020-03-31 13F IRON MTN INC COMMON 46284V101 2,686,490 -302,276 -10.11 63,938 -32.87 0.0150
2020-02-11 2019-12-31 13F IRON MTN INC COMMON 46284V101 2,988,766 69,222 2.37 95,252 0.73 0.0178
2019-11-12 2019-09-30 13F IRON MTN INC COMMON 46284V101 2,919,544 -986,647 -25.26 94,564 -21.60 0.0188
2019-08-07 2019-06-30 13F IRON MTN INC COMMON 46284V101 3,906,191 990,959 33.99 120,624 16.69 0.0236
2019-05-07 2019-03-31 13F IRON MTN INC COMMON 46284V101 2,915,232 -1,625,939 -35.80 103,374 -29.76 0.0211
2019-02-11 2018-12-31 13F IRON MTN INC COMMON 46284V101 4,541,171 -1,437,319 -24.04 147,179 -28.68 0.0340
2018-11-13 2018-09-30 13F/A-1 IRON MTN INC COMMON 46284V101 5,978,490 -1,496,375 -20.02 206,378 -21.14 0.0395
2018-11-07 2018-09-30 13F IRON MTN INC COMMON 46284V101 5,978,490 -1,496,375 206,378
2018-08-14 2018-06-30 13F IRON MTN INC COMMON 46284V101 7,474,865 766,273 11.42 261,696 18.71 0.0538
2018-05-10 2018-03-31 13F IRON MTN INC COMMON 46284V101 6,708,592 3,700,599 123.03 220,444 94.24 0.0472
2018-02-13 2017-12-31 13F IRON MTN INC COMMON 46284V101 3,007,993 725,460 31.78 113,492 28.21 0.0239
2017-11-09 2017-09-30 13F IRON MTN INC COMMON 46284V101 2,282,533 652,239 40.01 88,518 58.02 0.0195
2017-08-09 2017-06-30 13F IRON MTN INC COMMON 46284V101 1,630,294 140,286 9.42 56,016 5.39 0.0128
2017-05-10 2017-03-31 13F IRON MTN INC COMMON 46284V101 1,490,008 957,896 180.02 53,149 207.54 0.0121
2017-02-06 2016-12-31 13F IRON MTN INC COMMON 46284V101 532,112 229,925 76.09 17,282 52.36 0.0042
2016-11-04 2016-09-30 13F IRON MTN INC COMMON 46284V101 302,187 -585,246 -65.95 11,343 -67.91 0.0028
2016-08-08 2016-06-30 13F IRON MTN INC COMMON 46284V101 887,433 572,274 181.58 35,346 230.74 0.0088
2016-05-10 2016-03-31 13F IRON MTN INC COMMON 46284V101 315,159 -39,235 -11.07 10,687 11.66 0.0027
2016-02-12 2015-12-31 13F IRON MTN INC COMMON 46284V101 354,394 8,030 2.32 9,571 -10.92 0.0024
2015-11-13 2015-09-30 13F IRON MTN INC COMMON 46284V101 346,364 -784,210 -69.36 10,744 -69.34 0.0029
2015-08-14 2015-06-30 13F IRON MOUNTAIN COMMON 46284V101 1,130,574 495,544 78.03 35,047 51.29 0.0083
2015-05-15 2015-03-31 13F IRON MOUNTAIN COMMON 46284V101 635,030 335,078 111.71 23,166 99.76 0.0053
2015-02-13 2014-12-31 13F IRON MOUNTAIN COMMON 462846106 299,952 -58,782 -16.39 11,597 -0.99 0.0027
2014-12-08 2014-09-30 13F/A-1 IRON MTN COMMON 462846106 358,734 -208,899 -36.80 11,713 -41.80 0.0028
2014-11-14 2014-09-30 13F IRON MTN COMMON 462846106 358,734 11,713
2014-09-03 2014-06-30 13F/A-1 IRON MTN COMMON 462846106 567,633 69,335 13.91 20,124 46.51 0.0051
2014-08-14 2014-06-30 13F IRON MTN COMMON 462846106 567,633 20,124
2014-05-15 2014-03-31 13F IRON MTN COMMON 462846106 498,298 -291,982 -36.95 13,736 -42.73 0.0038
2014-02-26 2013-12-31 13F/A-1 IRON MTN COMMON 462846106 790,280 16,396 2.12 23,985 14.71 0.0068
2014-02-13 2013-12-31 13F IRON MTN COMMON 462846106 790,280 23,985
2013-10-31 2013-09-30 13F IRON MTN COMMON 462846106 773,884 296,537 62.12 20,910 64.61 0.0062
2013-08-13 2013-06-30 13F IRON MTN COMMON 462846106 477,347 477,347 12,703 0.0040
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
(%)
2025-02-12 2024-12-31 13F IRON MTN INC DEL OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-12-26 2024-09-30 13F/A IRON MTN INC DEL OPTION Call 15,200 1,806 n/a n/a n/a
2024-11-08 2024-09-30 13F IRON MTN INC DEL OPTION Call 15,200 1,806 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
(%)
2024-08-12 2024-06-30 13F IRON MTN INC DEL OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-12-26 2024-03-31 13F/A IRON MTN INC DEL OPTION Put 1,300 104 n/a n/a n/a
2024-05-10 2024-03-31 13F IRON MTN INC DEL OPTION Put 1,300 104 n/a n/a n/a
2023-11-14 2023-09-30 13F IRON MTN INC DEL OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-11 2023-06-30 13F IRON MTN INC DEL OPTION Put 1,200 68 n/a n/a n/a
2022-02-11 2021-12-31 13F/A IRON MTN INC OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F IRON MTN INC OPTION Put 0 0 n/a n/a n/a
2021-11-12 2021-09-30 13F IRON MTN INC OPTION Put 1,600 128.57 70 133.33 n/a n/a n/a
2021-08-12 2021-06-30 13F IRON MTN INC OPTION Put 700 30 n/a n/a n/a
2021-05-12 2021-03-31 13F IRON MTN INC OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-19 2020-12-31 13F/A IRON MTN INC OPTION Put 3,200 -70.91 94 -68.03 n/a n/a n/a
2021-02-11 2020-12-31 13F IRON MTN INC OPTION Put 3,200 94 n/a n/a n/a
2020-11-12 2020-09-30 13F/A IRON MTN INC OPTION Put 11,000 243.75 294 212.77 n/a n/a n/a
2020-11-12 2020-09-30 13F IRON MTN INC OPTION Put 11,000 294 n/a n/a n/a
2019-02-11 2018-12-31 13F IRON MTN INC OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-13 2018-09-30 13F/A IRON MTN INC OPTION Put 3,900 135 n/a n/a n/a
2018-11-07 2018-09-30 13F IRON MTN INC OPTION Put 3,900 135 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.