Iron Mountain Incorporated
DE ˙ DB ˙ US46284V1017
111,85 € ↑2,30 (2,10%)
2026-06-05
DEL PRIS
SecurityDE:I5M / Iron Mountain Incorporated
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership508,511 shares
Latest Disclosed Value $ 51,939,314
Bnp Paribas Arbitrage, Sa ownership in I5M / Iron Mountain Incorporated

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 508,511 shares of Iron Mountain Incorporated (DE:I5M) valued at $45,145,607 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 562,253 shares of Iron Mountain Incorporated. This represents a change in shares of -9.56% during the quarter. The current value of the position is $56,876,955 USD.

Bnp Paribas Arbitrage, Sa 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)
2026-05-12 2026-03-31 13F Iron Mountain Equity 46284V101 508,511 -53,742 -9.56 51,939 11.37 0.0026
2026-02-10 2025-12-31 13F Iron Mountain Equity 46284V101 562,253 35,983 6.84 46,639 -13.07 0.0211
2025-11-13 2025-09-30 13F Iron Mountain Equity 46284V101 526,270 99,645 23.36 53,648 22.60 0.0286
2025-08-14 2025-06-30 13F Iron Mountain Equity 46284V101 426,625 -151,549 -26.21 43,759 -12.04 0.0251
2025-05-14 2025-03-31 13F Iron Mountain Equity 46284V101 578,174 81,027 16.30 49,746 -4.80 0.0293
2025-02-14 2024-12-31 13F Iron Mountain Equity 46284V101 497,147 -22,117 -4.26 52,255 -15.31 0.0293
2024-11-13 2024-09-30 13F Iron Mountain Equity 46284V101 519,264 269,844 108.19 61,704 176.04 0.0415
2024-08-13 2024-06-30 13F Iron Mountain Equity 46284V101 249,420 -147,616 -37.18 22,353 -29.81 0.0182
2024-05-01 2024-03-31 13F Iron Mountain Equity 46284V101 397,036 173,360 77.50 31,846 103.46 0.0280
2024-02-14 2023-12-31 13F/A-2 Iron Mountain Equity 46284V101 223,676 139,847 166.82 15,653 214.11 0.0178
2024-02-07 2023-12-31 13F/A-1 Iron Mountain Equity 46284V101 223,676 139,847 15,653 0.0022
2024-02-07 2023-12-31 13F Iron Mountain Equity 46284V101 223,676 15,653
2023-11-14 2023-09-30 13F Iron Mountain Equity 46284V101 83,829 -197,954 -70.25 4,984 -68.88 0.0064
2023-08-09 2023-06-30 13F Iron Mountain Equity 46284V101 281,783 26,747 10.49 16,011 18.65 0.0200
2023-05-12 2023-03-31 13F IRON MOUNTAIN EQUITY 46284V101 255,036 9,796 3.99 13,494 10.37 0.0189
2023-02-14 2022-12-31 13F Iron Mountain Equity 46284V101 245,240 121,598 98.35 12,225 124.89 0.0188
2022-11-16 2022-09-30 13F/A-1 Iron Mountain Equity 46284V101 123,642 -20,898 -14.46 5,437 -22.75 0.0087
2022-11-15 2022-09-30 13F Iron Mountain Equity 46284V101 123,642 -20,898 5,437 0.0013
2022-08-12 2022-06-30 13F Iron Mountain Equity 46284V101 144,540 52,125 56.40 7,038 37.44 0.0110
2022-05-18 2022-03-31 13F/A-1 Iron Mountain Equity 46284V101 92,415 -190,630 -67.35 5,121 -65.43 0.0069
2022-02-09 2021-12-31 13F IRON MOUNTAIN EQUITY 46284V101 283,045 141,390 99.81 14,812 140.67 0.0211
2021-11-16 2021-09-30 13F/A-1 IRON MOUNTAIN EQUITY 46284V101 141,655 -97,374 -40.74 6,155 -39.16 0.0087
2021-11-12 2021-09-30 13F IRON MOUNTAIN EQUITY 46284V101 130,438 -108,591 3,494 0.0000
2021-08-10 2021-06-30 13F IRON MOUNTAIN EQUITY 46284V101 239,029 174,884 272.64 10,116 326.07 0.0134
2021-05-07 2021-03-31 13F IRON MOUNTAIN EQUITY 46284V101 64,145 2,400 3.89 2,374 30.44 0.0035
2021-02-10 2020-12-31 13F IRON MOUNTAIN EQUITY 46284V101 61,745 -68,693 -52.66 1,820 -47.91 0.0034
2020-10-30 2020-09-30 13F IRON MOUNTAIN EQUITY 46284V101 130,438 -133,580 -50.60 3,494 -49.29 0.0050
2020-08-06 2020-06-30 13F IRON MOUNTAIN EQUITY 46284V101 264,018 135,648 105.67 6,891 125.53 0.0122
2020-05-13 2020-03-31 13F IRON MOUNTAIN EQUITY 46284V101 128,370 -107,438 -45.56 3,055 -59.35 0.0063
2020-02-12 2019-12-31 13F IRON MOUNTAIN EQUITY 46284V101 235,808 -74,516 -24.01 7,515 -25.23 0.0137
2019-11-07 2019-09-30 13F IRON MOUNTAIN EQUITY 46284V101 310,324 233,475 303.81 10,051 317.92 0.0178
2019-07-30 2019-06-30 13F IRON MOUNTAIN EQUITY 46284V101 76,849 -180,924 -70.19 2,405 -73.69 0.0048
2019-04-25 2019-03-31 13F IRON MOUNTAIN EQUITY 46284V101 257,773 166,610 182.76 9,141 209.41 0.0198
2019-02-12 2018-12-31 13F IRON MOUNTAIN EQUITY 46284V101 91,163 -107,788 -54.18 2,955 -56.98 0.0070
2018-11-07 2018-09-30 13F IRON MOUNTAIN EQUITY 46284V101 198,951 44,178 28.54 6,868 26.74 0.0101
2018-07-25 2018-06-30 13F IRON MOUNTAIN EQUITY 46284V101 154,773 70,956 84.66 5,419 96.73 0.0090
2018-05-11 2018-03-31 13F IRON MOUNTAIN EQUITY 46284V101 83,817 -35,225 -29.59 2,754 -38.68 0.0052
2018-03-05 2017-12-31 13F/A-1 IRON MOUNTAIN EQUITY 46284V101 119,042 -25,623 -17.71 4,491 -20.19 0.0080
2018-02-01 2017-12-31 13F IRON MOUNTAIN EQUITY 46284V101 119,042 -25,623 4,491
2017-11-03 2017-09-30 13F IRON MTN INC STOCK 46284V101 144,665 47,539 48.95 5,627 68.62 0.0138
2017-08-03 2017-06-30 13F IRON MTN INC STOCK 46284V101 97,126 -119,859 -55.24 3,337 -56.88 0.0101
2017-05-03 2017-03-31 13F IRON MTN INC STOCK 46284V101 216,985 174,165 406.74 7,740 456.76 0.0204
2017-02-14 2016-12-31 13F IRON MTN INC STOCK 46284V101 42,820 4,985 13.18 1,391 -2.04 0.0065
2016-10-05 2016-09-30 13F * IRON MTN INC NEW COM STOCK 46284V101 37,835 -27,144 -41.77 1,420 -45.17 0.0058
2016-07-06 2016-06-30 13F * IRON MTN INC NEW COM STOCK 46284V101 64,979 -22,001 -25.29 2,588 -12.24 0.0117
2016-04-22 2016-03-31 13F * IRON MTN INC NEW COM STOCK 46284V101 86,980 -10,492 -10.76 2,949 12.04 0.0125
2016-04-19 2015-12-31 13F/A-1 * IRON MTN INC NEW COM STOCK 46284V101 97,472 31,839 48.51 2,633 29.34 0.0128
2016-02-10 2015-12-31 13F * IRON MTN INC NEW COM STOCK 46284V101 97,472 2,633
2015-11-13 2015-09-30 13F * IRON MTN INC NEW COM STOCK 46284V101 65,633 -10,469 -13.76 2,036 -13.73 0.0051
2015-08-14 2015-06-30 13F IRON MTN INC NEW COM ADDED STOCK 46284V101 76,102 -12,665 -14.27 2,359 -27.15 0.0066
2015-05-15 2015-03-31 13F * IRON MTN INC NEW COM ADDED STOCK 46284V101 88,767 -44,509 -33.40 3,238 -37.15 0.0090
2015-03-10 2014-12-31 13F/A-1 * IRON MTN INC COM STOCK 462846106 133,276 54,848 69.93 5,152 101.25 0.0183
2015-02-11 2014-12-31 13F * IRON MTN INC COM STOCK 462846106 133,276 5,152
2014-11-12 2014-09-30 13F * IRON MTN INC COM STOCK 462846106 78,428 35,525 82.80 2,561 68.42 0.0022
2014-08-14 2014-06-30 13F/A-1 * IRON MTN INC COM STOCK 462846106 42,903 -17,326 -28.77 1,521 -11.21 0.0014
2014-08-14 2014-06-30 13F IRON MTN INC COM STOCK 462846106 42,903 1,521
2014-05-13 2014-03-31 13F IRON MTN STOCK 462846106 60,229 -20,614 -25.50 1,713 -30.21 0.0013
2014-04-02 2013-12-31 13F/A-1 IRON MTN STOCK 462846106 80,843 -380,415 -82.47 2,454 -80.32 0.0018
2014-02-12 2013-12-31 13F IRON MTN STOCK 462846106 80,843 2,454
2013-11-13 2013-09-30 13F IRON MTN STOCK 462846106 461,258 461,258 12,463 0.0091
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
(%)
2025-02-14 2024-12-31 13F Iron Mountain Option Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F Iron Mountain Option Call 70 832 n/a n/a n/a
2014-05-13 2014-03-31 13F IRON MTN OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-04-02 2013-12-31 13F/A IRON MTN OPTION Call 1,569 346 n/a n/a n/a
2014-02-12 2013-12-31 13F IRON MTN OPTION Call 1,569 346 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
(%)
2014-04-02 2013-12-31 13F/A IRON MTN OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-11-13 2013-09-30 13F IRON MTN OPTION Put 3,066 846 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.