Citadel Advisors’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
Q1 | $21.1M | Buy |
206,200
+28,300
| +16% | +$2.82M | ﹤0.01% | 2278 |
|
|
2025
Q4 | $14.8M | Buy |
177,900
+42,900
| +32% | +$4.02M | ﹤0.01% | 2724 |
|
|
2025
Q3 | $13.8M | Sell |
135,000
-31,500
| -19% | -$3.03M | ﹤0.01% | 2797 |
|
|
2025
Q2 | $17.1M | Sell |
166,500
-278,200
| -63% | -$26.2M | ﹤0.01% | 2334 |
|
|
2025
Q1 | $38.3M | Buy |
444,700
+242,400
| +120% | +$23.4M | 0.01% | 1380 |
|
|
2024
Q4 | $21.3M | Sell |
202,300
-202,500
| -50% | -$23.8M | ﹤0.01% | 2099 |
|
|
2024
Q3 | $48.1M | Buy |
404,800
+55,600
| +16% | +$5.95M | 0.01% | 1247 |
|
|
2024
Q2 | $31.3M | Buy |
349,200
+111,200
| +47% | +$9M | 0.01% | 1569 |
|
|
2024
Q1 | $19.1M | Buy |
238,000
+6,100
| +3% | +$442K | ﹤0.01% | 2115 |
|
|
2023
Q4 | $16.2M | Sell |
231,900
-61,600
| -21% | -$3.86M | ﹤0.01% | 2246 |
|
|
2023
Q3 | $17.4M | Buy |
293,500
+6,300
| +2% | +$385K | ﹤0.01% | 2008 |
|
|
2023
Q2 | $16.3M | Sell |
287,200
-68,200
| -19% | -$3.73M | ﹤0.01% | 2093 |
|
|
2023
Q1 | $18.8M | Sell |
355,400
-9,600
| -3% | -$503K | ﹤0.01% | 1984 |
|
|
2022
Q4 | $18.2M | Buy |
365,000
+36,900
| +11% | +$1.86M | ﹤0.01% | 2067 |
|
|
2022
Q3 | $14.4M | Buy |
328,100
+11,200
| +4% | +$566K | ﹤0.01% | 2265 |
|
|
2022
Q2 | $15.4M | Buy |
316,900
+14,200
| +5% | +$747K | ﹤0.01% | 2130 |
|
|
2022
Q1 | $16.8M | Buy |
302,700
+96,200
| +47% | +$4.58M | ﹤0.01% | 2206 |
|
|
2021
Q4 | $10.8M | Buy |
206,500
+17,300
| +9% | +$818K | ﹤0.01% | 2946 |
|
|
2021
Q3 | $8.22M | Sell |
189,200
-98,000
| -34% | -$4.41M | ﹤0.01% | 3413 |
|
|
2021
Q2 | $12.2M | Sell |
287,200
-113,200
| -28% | -$4.75M | ﹤0.01% | 2783 |
|
|
2021
Q1 | $14.8M | Sell |
400,400
-278,900
| -41% | -$9.32M | ﹤0.01% | 2383 |
|
|
2020
Q4 | $20M | Sell |
679,300
-43,800
| -6% | -$1.22M | 0.01% | 1805 |
|
|
2020
Q3 | $19.4M | Sell |
723,100
-130,900
| -15% | -$3.72M | 0.01% | 1607 |
|
|
2020
Q2 | $22.3M | Buy |
854,000
+397,300
| +87% | +$10M | 0.01% | 1421 |
|
|
2020
Q1 | $10.9M | Sell |
456,700
-62,500
| -12% | -$1.89M | ﹤0.01% | 1766 |
|
|
2019
Q4 | $16.5M | Sell |
519,200
-413,700
| -44% | -$13.6M | 0.01% | 1667 |
|
|
2019
Q3 | $30.2M | Buy |
932,900
+482,400
| +107% | +$15.2M | 0.01% | 1119 |
|
|
2019
Q2 | $14.1M | Buy |
450,500
+41,200
| +10% | +$1.35M | 0.01% | 1764 |
|
|
2019
Q1 | $14.5M | Buy |
409,300
+249,500
| +156% | +$8.81M | 0.01% | 1639 |
|
|
2018
Q4 | $5.18M | Buy |
159,800
+34,200
| +27% | +$1.12M | ﹤0.01% | 2731 |
|
|
2018
Q3 | $4.34M | Buy |
125,600
+18,400
| +17% | +$655K | ﹤0.01% | 3178 |
|
|
2018
Q2 | $3.75M | Buy |
107,200
+50,500
| +89% | +$1.71M | ﹤0.01% | 3160 |
|
|
2018
Q1 | $1.86M | Buy |
56,700
+28,000
| +98% | +$944K | ﹤0.01% | 3839 |
|
|
2017
Q4 | $1.08M | Sell |
28,700
-2,900
| -9% | -$115K | ﹤0.01% | 4550 |
|
|
2017
Q3 | $1.23M | Sell |
31,600
-10,500
| -25% | -$392K | ﹤0.01% | 4022 |
|
|
2017
Q2 | $1.45M | Buy |
42,100
+23,500
| +126% | +$822K | ﹤0.01% | 3582 |
|
|
2017
Q1 | $663K | Sell |
18,600
-1,100
| -6% | -$38.9K | ﹤0.01% | 4589 |
|
|
2016
Q4 | $640K | Sell |
19,700
-14,100
| -42% | -$469K | ﹤0.01% | 4525 |
|
|
2016
Q3 | $1.27M | Buy |
33,800
+4,400
| +15% | +$170K | ﹤0.01% | 3522 |
|
|
2016
Q2 | $1.17M | Sell |
29,400
-12,000
| -29% | -$437K | ﹤0.01% | 3380 |
|
|
2016
Q1 | $1.4M | Buy |
41,400
+4,200
| +11% | +$121K | ﹤0.01% | 3067 |
|
|
2015
Q4 | $1M | Buy |
37,200
+800
| +2% | +$23.5K | ﹤0.01% | 3557 |
|
|
2015
Q3 | $1.13M | Buy |
36,400
+16,800
| +86% | +$501K | ﹤0.01% | 3650 |
|
|
2015
Q2 | $608K | Buy |
19,600
+4,900
| +33% | +$172K | ﹤0.01% | 4676 |
|
|
2015
Q1 | $536K | Sell |
14,700
-45,300
| -76% | -$1.75M | ﹤0.01% | 4791 |
|
|
2014
Q4 | $2.32M | Buy |
60,000
+58,900
| +5,355% | +$2.14M | ﹤0.01% | 2739 |
|
|
2014
Q3 | $36K | Sell |
1,100
-128,632
| -99% | -$4.17M | ﹤0.01% | 7107 |
|
|
2014
Q2 | $4.25M | Buy |
129,732
+4,977
| +4% | +$135K | ﹤0.01% | 1985 |
|
|
2014
Q1 | $3.18M | Buy |
124,755
+46,526
| +59% | +$1.19M | ﹤0.01% | 2173 |
|
|
2013
Q4 | $2.19M | Sell |
78,229
-103,331
| -57% | -$2.65M | ﹤0.01% | 2458 |
|
|
2013
Q3 | $4.53M | Buy |
181,560
+118,371
| +187% | +$3.01M | 0.01% | 1651 |
|
|
2013
Q2 | $1.55M | Buy |
+63,189
| New | +$2.04M | ﹤0.01% | 2725 |
|
Other funds holding IRM
VPM
VCM
Citadel Advisors's IRM Position: Q1 2026 in Review
Citadel Advisors reduced its Iron Mountain (IRM) stake by 67% in Q1 2026, selling an estimated $74.1M and leaving 374,954 shares worth $38.3M. The position accounts for 0.01% of the portfolio, ranked #1605.
Citadel Advisors first reported a position in IRM in Q2 2013 and has held it in 47 quarters since. The position peaked at $139M in Q4 2023. 1,084 funds tracked by Wall St. Rank hold IRM as of Q1 2026.
- Citadel Advisors held 374,954 shares of Iron Mountain worth $38.3M as of Q1 2026.
- Citadel Advisors sold 744,417 Iron Mountain shares in Q1 2026, an estimated $74.1M.
- Iron Mountain made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1605 holding.
- Citadel Advisors first reported a position in Iron Mountain in Q2 2013 and has held it in 47 quarters since.
- Citadel Advisors's Iron Mountain position peaked at $139M in Q4 2023.
- 1,084 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.