SEI Investments’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 | $88.1M | Sell |
697,737
-277,055
| -28% | -$34M | 0.08% | 274 |
|
|
2026
Q1 | $99.6M | Sell |
974,792
-49,872
| -5% | -$4.96M | 0.09% | 228 |
|
|
2025
Q4 | $85M | Buy |
1,024,664
+151,794
| +17% | +$14.2M | 0.08% | 247 |
|
|
2025
Q3 | $89M | Sell |
872,870
-12,210
| -1% | -$1.18M | 0.1% | 200 |
|
|
2025
Q2 | $90.8M | Buy |
885,080
+55,245
| +7% | +$5.21M | 0.11% | 198 |
|
|
2025
Q1 | $71.4M | Sell |
829,835
-18,532
| -2% | -$1.79M | 0.09% | 245 |
|
|
2024
Q4 | $89.2M | Sell |
848,367
-68,256
| -7% | -$8.02M | 0.11% | 178 |
|
|
2024
Q3 | $109M | Sell |
916,623
-208,868
| -19% | -$22.3M | 0.14% | 144 |
|
|
2024
Q2 | $101M | Buy |
1,125,491
+181,763
| +19% | +$14.7M | 0.14% | 140 |
|
|
2024
Q1 | $75.7M | Buy |
943,728
+68,636
| +8% | +$4.97M | 0.11% | 196 |
|
|
2023
Q4 | $61.2M | Buy |
875,092
+643,760
| +278% | +$40.4M | 0.1% | 212 |
|
|
2023
Q3 | $13.8M | Sell |
231,332
-76,050
| -25% | -$4.65M | 0.02% | 690 |
|
|
2023
Q2 | $17.5M | Buy |
307,382
+119,166
| +63% | +$6.52M | 0.03% | 617 |
|
|
2023
Q1 | $9.96M | Buy |
188,216
+70,553
| +60% | +$3.7M | 0.02% | 844 |
|
|
2022
Q4 | $5.87M | Sell |
117,663
-12,947
| -10% | -$654K | 0.01% | 978 |
|
|
2022
Q3 | $5.74M | Buy |
130,610
+29,251
| +29% | +$1.48M | 0.01% | 1031 |
|
|
2022
Q2 | $4.94M | Sell |
101,359
-53,444
| -35% | -$2.81M | 0.01% | 1100 |
|
|
2022
Q1 | $8.67M | Sell |
154,803
-18,484
| -11% | -$880K | 0.02% | 830 |
|
|
2021
Q4 | $9.12M | Sell |
173,287
-15,772
| -8% | -$745K | 0.02% | 836 |
|
|
2021
Q3 | $8.24M | Buy |
189,059
+99,516
| +111% | +$4.48M | 0.02% | 842 |
|
|
2021
Q2 | $3.8M | Sell |
89,543
-3,139
| -3% | -$132K | 0.01% | 1222 |
|
|
2021
Q1 | $3.43M | Buy |
92,682
+34,113
| +58% | +$1.14M | 0.01% | 1210 |
|
|
2020
Q4 | $1.73M | Sell |
58,569
-3,120
| -5% | -$86.6K | ﹤0.01% | 1455 |
|
|
2020
Q3 | $1.7M | Sell |
61,689
-53,861
| -47% | -$1.53M | ﹤0.01% | 1368 |
|
|
2020
Q2 | $3.06M | Buy |
115,550
+48,112
| +71% | +$1.21M | 0.01% | 1074 |
|
|
2020
Q1 | $1.59M | Buy |
67,438
+20,505
| +44% | +$621K | 0.01% | 1250 |
|
|
2019
Q4 | $1.51M | Sell |
46,933
-45,377
| -49% | -$1.49M | ﹤0.01% | 1469 |
|
|
2019
Q3 | $3M | Sell |
92,310
-21,168
| -19% | -$665K | 0.01% | 1151 |
|
|
2019
Q2 | $3.56M | Sell |
113,478
-2,611
| -2% | -$85.6K | 0.01% | 1071 |
|
|
2019
Q1 | $4.12M | Sell |
116,089
-52,369
| -31% | -$1.85M | 0.01% | 1009 |
|
|
2018
Q4 | $5.78M | Buy |
168,458
+17,770
| +12% | +$583K | 0.02% | 823 |
|
|
2018
Q3 | $5.2M | Sell |
150,688
-9,771
| -6% | -$348K | 0.02% | 843 |
|
|
2018
Q2 | $5.62M | Buy |
160,459
+126,452
| +372% | +$4.27M | 0.02% | 869 |
|
|
2018
Q1 | $1.12M | Sell |
34,007
-13,282
| -28% | -$448K | ﹤0.01% | 1390 |
|
|
2017
Q4 | $1.78M | Buy |
47,289
+21,397
| +83% | +$849K | 0.01% | 1327 |
|
|
2017
Q3 | $1.01M | Sell |
25,892
-1,520
| -6% | -$56.8K | ﹤0.01% | 1453 |
|
|
2017
Q2 | $941K | Sell |
27,412
-34,714
| -56% | -$1.21M | ﹤0.01% | 1448 |
|
|
2017
Q1 | $2.22M | Sell |
62,126
-63,608
| -51% | -$2.25M | 0.01% | 1113 |
|
|
2016
Q4 | $4.08M | Buy |
125,734
+23,924
| +23% | +$795K | 0.02% | 858 |
|
|
2016
Q3 | $3.82M | Buy |
101,810
+48,792
| +92% | +$1.88M | 0.02% | 817 |
|
|
2016
Q2 | $2.11M | Buy |
53,018
+15,674
| +42% | +$570K | 0.01% | 979 |
|
|
2016
Q1 | $1.27M | Buy |
37,344
+9,845
| +36% | +$283K | 0.01% | 1091 |
|
|
2015
Q4 | $743K | Sell |
27,499
-16,286
| -37% | -$478K | ﹤0.01% | 1271 |
|
|
2015
Q3 | $1.36M | Sell |
43,785
-35,739
| -45% | -$1.07M | 0.01% | 947 |
|
|
2015
Q2 | $2.46M | Sell |
79,524
-30,128
| -27% | -$1.06M | 0.02% | 674 |
|
|
2015
Q1 | $4M | Buy |
109,652
+80,878
| +281% | +$3.12M | 0.03% | 523 |
|
|
2014
Q4 | $1.11M | Buy |
+28,774
| New | +$1.05M | 0.01% | 907 |
|
Other funds holding IRM
SEI Investments's IRM Position: Q2 2026 in Review
SEI Investments reduced its Iron Mountain (IRM) stake by 28% in Q2 2026, selling an estimated $34M and leaving 697,737 shares worth $88.1M. The position accounts for 0.08% of the portfolio, ranked #274.
SEI Investments first reported a position in IRM in Q4 2014 and has held it in 47 quarters since. The position peaked at $109M in Q3 2024. 1,171 funds tracked by Wall St. Rank hold IRM as of Q2 2026.
- SEI Investments held 697,737 shares of Iron Mountain worth $88.1M as of Q2 2026.
- SEI Investments sold 277,055 Iron Mountain shares in Q2 2026, an estimated $34M.
- Iron Mountain made up 0.08% of SEI Investments's portfolio in Q2 2026, its #274 holding.
- SEI Investments first reported a position in Iron Mountain in Q4 2014 and has held it in 47 quarters since.
- SEI Investments's Iron Mountain position peaked at $109M in Q3 2024.
- 1,171 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.
Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.