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 | $10.1M | Buy |
98,400
+7,900
| +9% | +$786K | ﹤0.01% | 3247 |
|
|
2025
Q4 | $7.51M | Sell |
90,500
-43,600
| -33% | -$4.08M | ﹤0.01% | 3657 |
|
|
2025
Q3 | $13.7M | Sell |
134,100
-251,700
| -65% | -$24.2M | ﹤0.01% | 2807 |
|
|
2025
Q2 | $39.6M | Sell |
385,800
-11,500
| -3% | -$1.08M | 0.01% | 1425 |
|
|
2025
Q1 | $34.2M | Buy |
397,300
+283,600
| +249% | +$27.3M | 0.01% | 1472 |
|
|
2024
Q4 | $12M | Sell |
113,700
-149,300
| -57% | -$17.5M | ﹤0.01% | 2755 |
|
|
2024
Q3 | $31.3M | Buy |
263,000
+203,300
| +341% | +$21.7M | 0.01% | 1641 |
|
|
2024
Q2 | $5.35M | Sell |
59,700
-23,200
| -28% | -$1.88M | ﹤0.01% | 3636 |
|
|
2024
Q1 | $6.65M | Sell |
82,900
-111,400
| -57% | -$8.06M | ﹤0.01% | 3527 |
|
|
2023
Q4 | $13.6M | Sell |
194,300
-50,500
| -21% | -$3.17M | ﹤0.01% | 2455 |
|
|
2023
Q3 | $14.6M | Sell |
244,800
-7,100
| -3% | -$434K | ﹤0.01% | 2223 |
|
|
2023
Q2 | $14.3M | Buy |
251,900
+7,400
| +3% | +$405K | ﹤0.01% | 2235 |
|
|
2023
Q1 | $12.9M | Sell |
244,500
-8,400
| -3% | -$440K | ﹤0.01% | 2462 |
|
|
2022
Q4 | $12.6M | Buy |
252,900
+73,300
| +41% | +$3.7M | ﹤0.01% | 2502 |
|
|
2022
Q3 | $7.9M | Sell |
179,600
-69,800
| -28% | -$3.52M | ﹤0.01% | 3108 |
|
|
2022
Q2 | $12.1M | Buy |
249,400
+183,500
| +278% | +$9.66M | ﹤0.01% | 2430 |
|
|
2022
Q1 | $3.65M | Sell |
65,900
-76,600
| -54% | -$3.65M | ﹤0.01% | 4790 |
|
|
2021
Q4 | $7.46M | Buy |
142,500
+800
| +0.6% | +$37.8K | ﹤0.01% | 3597 |
|
|
2021
Q3 | $6.16M | Sell |
141,700
-65,300
| -32% | -$2.94M | ﹤0.01% | 3922 |
|
|
2021
Q2 | $8.76M | Sell |
207,000
-126,100
| -38% | -$5.29M | ﹤0.01% | 3298 |
|
|
2021
Q1 | $12.3M | Buy |
333,100
+23,600
| +8% | +$789K | ﹤0.01% | 2672 |
|
|
2020
Q4 | $9.12M | Buy |
309,500
+158,600
| +105% | +$4.4M | ﹤0.01% | 2771 |
|
|
2020
Q3 | $4.04M | Buy |
150,900
+27,200
| +22% | +$774K | ﹤0.01% | 3474 |
|
|
2020
Q2 | $3.23M | Sell |
123,700
-19,500
| -14% | -$492K | ﹤0.01% | 3733 |
|
|
2020
Q1 | $3.41M | Sell |
143,200
-89,200
| -38% | -$2.7M | ﹤0.01% | 3259 |
|
|
2019
Q4 | $7.41M | Sell |
232,400
-34,800
| -13% | -$1.14M | ﹤0.01% | 2570 |
|
|
2019
Q3 | $8.65M | Sell |
267,200
-49,300
| -16% | -$1.55M | ﹤0.01% | 2398 |
|
|
2019
Q2 | $9.91M | Buy |
316,500
+143,400
| +83% | +$4.7M | ﹤0.01% | 2191 |
|
|
2019
Q1 | $6.14M | Buy |
173,100
+62,700
| +57% | +$2.21M | ﹤0.01% | 2709 |
|
|
2018
Q4 | $3.58M | Buy |
110,400
+57,800
| +110% | +$1.9M | ﹤0.01% | 3278 |
|
|
2018
Q3 | $1.82M | Sell |
52,600
-22,300
| -30% | -$794K | ﹤0.01% | 4574 |
|
|
2018
Q2 | $2.62M | Buy |
74,900
+18,700
| +33% | +$632K | ﹤0.01% | 3689 |
|
|
2018
Q1 | $1.85M | Sell |
56,200
-28,400
| -34% | -$957K | ﹤0.01% | 3850 |
|
|
2017
Q4 | $3.19M | Buy |
84,600
+77,900
| +1,163% | +$3.09M | ﹤0.01% | 3023 |
|
|
2017
Q3 | $261K | Buy |
+6,700
| New | +$250K | ﹤0.01% | 6281 |
|
|
2017
Q2 | – | Sell |
-11,300
| Closed | -$403K | – | 7762 |
|
|
2017
Q1 | $403K | Sell |
11,300
-18,700
| -62% | -$662K | ﹤0.01% | 5390 |
|
|
2016
Q4 | $974K | Buy |
30,000
+6,400
| +27% | +$213K | ﹤0.01% | 3886 |
|
|
2016
Q3 | $886K | Sell |
23,600
-16,200
| -41% | -$625K | ﹤0.01% | 4002 |
|
|
2016
Q2 | $1.58M | Buy |
39,800
+21,500
| +117% | +$783K | ﹤0.01% | 2982 |
|
|
2016
Q1 | $621K | Sell |
18,300
-20,300
| -53% | -$583K | ﹤0.01% | 4100 |
|
|
2015
Q4 | $1.04M | Buy |
38,600
+21,700
| +128% | +$636K | ﹤0.01% | 3510 |
|
|
2015
Q3 | $524K | Sell |
16,900
-1,500
| -8% | -$44.8K | ﹤0.01% | 4750 |
|
|
2015
Q2 | $570K | Buy |
18,400
+8,300
| +82% | +$291K | ﹤0.01% | 4759 |
|
|
2015
Q1 | $368K | Buy |
10,100
+2,400
| +31% | +$92.7K | ﹤0.01% | 5367 |
|
|
2014
Q4 | $298K | Buy |
7,700
+1,300
| +20% | +$47.3K | ﹤0.01% | 5438 |
|
|
2014
Q3 | $209K | Sell |
6,400
-162,825
| -96% | -$5.28M | ﹤0.01% | 5678 |
|
|
2014
Q2 | $5.54M | Sell |
169,225
-8,331
| -5% | -$226K | 0.01% | 1735 |
|
|
2014
Q1 | $4.52M | Buy |
177,556
+87,750
| +98% | +$2.24M | 0.01% | 1875 |
|
|
2013
Q4 | $2.52M | Sell |
89,806
-25,427
| -22% | -$651K | ﹤0.01% | 2323 |
|
|
2013
Q3 | $2.88M | Sell |
115,233
-9,846
| -8% | -$250K | ﹤0.01% | 2059 |
|
|
2013
Q2 | $3.08M | Buy |
+125,079
| New | +$4.04M | 0.01% | 2040 |
|
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.