John Overdeck’s Iron Mountain IRM Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $8.32M | Sell |
65,892
-113,310
| -63% | -$13.9M | 0.01% | 1665 |
|
|
2026
Q1 | $18.3M | Sell |
179,202
-110,958
| -38% | -$11M | 0.01% | 1001 |
|
|
2025
Q4 | $24.1M | Buy |
+290,160
| New | +$27.2M | 0.03% | 632 |
|
|
2025
Q2 | – | Sell |
-175,533
| Closed | -$15.1M | – | 3349 |
|
|
2025
Q1 | $15.1M | Buy |
+175,533
| New | +$16.9M | 0.03% | 595 |
|
|
2024
Q2 | – | Sell |
-45,856
| Closed | -$3.68M | – | 3175 |
|
|
2024
Q1 | $3.68M | Buy |
+45,856
| New | +$3.32M | 0.01% | 1132 |
|
|
2023
Q2 | – | Sell |
-5,824
| Closed | -$308K | – | 3133 |
|
|
2023
Q1 | $308K | Sell |
5,824
-29,832
| -84% | -$1.56M | ﹤0.01% | 2403 |
|
|
2022
Q4 | $1.78M | Buy |
35,656
+21,000
| +143% | +$1.06M | 0.01% | 1377 |
|
|
2022
Q3 | $644K | Buy |
+14,656
| New | +$740K | ﹤0.01% | 1656 |
|
|
2020
Q2 | – | Sell |
-166,802
| Closed | -$4.21M | – | 3220 |
|
|
2020
Q1 | $3.97M | Buy |
+166,802
| New | +$5.05M | 0.03% | 613 |
|
|
2019
Q4 | – | Sell |
-823,332
| Closed | -$27M | – | 3807 |
|
|
2019
Q3 | $26.7M | Buy |
823,332
+561,841
| +215% | +$17.6M | 0.09% | 282 |
|
|
2019
Q2 | $8.19M | Sell |
261,491
-842,133
| -76% | -$27.6M | 0.03% | 677 |
|
|
2019
Q1 | $39.1M | Buy |
1,103,624
+1,077,997
| +4,206% | +$38.1M | 0.13% | 206 |
|
|
2018
Q4 | $831K | Buy |
+25,627
| New | +$841K | ﹤0.01% | 1768 |
|
|
2017
Q1 | – | Sell |
-111,546
| Closed | -$3.62M | – | 3090 |
|
|
2016
Q4 | $3.62M | Buy |
111,546
+51,500
| +86% | +$1.71M | 0.01% | 1048 |
|
|
2016
Q3 | $2.25M | Sell |
60,046
-1,078,227
| -95% | -$41.6M | 0.01% | 1370 |
|
|
2016
Q2 | $45.3M | Buy |
1,138,273
+1,020,914
| +870% | +$37.2M | 0.19% | 120 |
|
|
2016
Q1 | $3.98M | Sell |
117,359
-478,491
| -80% | -$13.7M | 0.02% | 814 |
|
|
2015
Q4 | $16.1M | Buy |
+595,850
| New | +$17.5M | 0.08% | 289 |
|
|
2015
Q1 | – | Sell |
-39,241
| Closed | -$1.52M | – | 2719 |
|
|
2014
Q4 | $1.52M | Buy |
+39,241
| New | +$1.43M | 0.01% | 1164 |
|
|
2014
Q2 | – | Sell |
-225,305
| Closed | -$5.74M | – | 2242 |
|
|
2014
Q1 | $5.74M | Buy |
225,305
+142,254
| +171% | +$3.64M | 0.03% | 584 |
|
|
2013
Q4 | $2.33M | Sell |
83,051
-38,885
| -32% | -$996K | 0.01% | 935 |
|
|
2013
Q3 | $3.04M | Sell |
121,936
-572,143
| -82% | -$14.5M | 0.02% | 657 |
|
|
2013
Q2 | $17.1M | Buy |
+694,079
| New | +$22.4M | 0.12% | 238 |
|
Other funds holding IRM
John Overdeck's IRM Position: Q2 2026 in Review
John Overdeck reduced its Iron Mountain (IRM) stake by 63% in Q2 2026, selling an estimated $13.9M and leaving 65,892 shares worth $8.32M. The position accounts for 0.01% of the portfolio, ranked #1665.
John Overdeck first reported a position in IRM in Q2 2013 and has held it in 23 quarters since. The position peaked at $45.3M in Q2 2016. 1,163 funds tracked by Wall St. Rank hold IRM as of Q2 2026.
- John Overdeck held 65,892 shares of Iron Mountain worth $8.32M as of Q2 2026.
- John Overdeck sold 113,310 Iron Mountain shares in Q2 2026, an estimated $13.9M.
- Iron Mountain made up 0.01% of John Overdeck's portfolio in Q2 2026, its #1665 holding.
- John Overdeck first reported a position in Iron Mountain in Q2 2013 and has held it in 23 quarters since.
- John Overdeck's Iron Mountain position peaked at $45.3M in Q2 2016.
- 1,163 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.