Cliff Asness's IRM Position Overview
Cliff Asness (via Aqr Capital Management LLC) currently holds 1.85 M shares of Iron Mountain Incorporated (IRM) worth $183.07 M, representing 0.08% of the portfolio. First purchased in 2015-Q1, this long-term strategic position has been held for 45 quarters.
Based on 13F filings since 2013, Cliff Asness has maintained a long-term strategic position in IRM, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2026, adding 922,877 shares. Largest reduction occurred in Q1 2021, reducing 155,514 shares.
Analysis based on 13F filings available since 2013 Q2
Cliff Asness's Iron Mountain Incorporated (IRM) Holding Value Over Time
Track share changes against reported price movement
Quarterly Iron Mountain Incorporated (IRM) Trades by Cliff Asness
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +922,877 | Add 99.97% | 1.85 M | $99.17 |
| Q4 2025 | +465,724 | Add 101.80% | 923,196 | $82.95 |
| Q3 2025 | +351,463 | Add 331.54% | 457,472 | $101.33 |
| Q2 2025 | +40,844 | Add 62.68% | 106,009 | $101.58 |
| Q1 2025 | -138,699 | Reduce 68.04% | 65,165 | $84.88 |
| Q4 2024 | +40,162 | Add 24.53% | 203,864 | $104.16 |
| Q3 2024 | +113,464 | Add 225.85% | 163,702 | $116.87 |
| Q2 2024 | +322 | Add 0.65% | 50,238 | $89.62 |
| Q1 2024 | +25,706 | Add 106.18% | 49,916 | $80.21 |
| Q4 2023 | -5,014 | Reduce 17.16% | 24,210 | $69.98 |
| Q3 2023 | -12,541 | Reduce 30.03% | 29,224 | $59.45 |
| Q2 2023 | +10,249 | Add 32.52% | 41,765 | $56.82 |
| Q1 2023 | +4,574 | Add 16.98% | 31,516 | $52.22 |
| Q4 2022 | -3,405 | Reduce 11.22% | 26,942 | $49.85 |
| Q3 2022 | +5,758 | Add 23.42% | 30,347 | $43.96 |
| Q2 2022 | -1,676 | Reduce 6.38% | 24,589 | $48.07 |
| Q1 2022 | -5,900 | Reduce 18.34% | 26,265 | $55.40 |
| Q4 2021 | -2,478 | Reduce 7.15% | 32,165 | $52.32 |
| Q3 2021 | +17,931 | Add 107.29% | 34,643 | $43.44 |
| Q2 2021 | -27,954 | Reduce 62.58% | 16,712 | $42.30 |
| Q1 2021 | -155,514 | Reduce 77.69% | 44,666 | $36.94 |
| Q4 2020 | +180,637 | Add 924.31% | 200,180 | $29.10 |
| Q3 2020 | -43,957 | Reduce 69.22% | 19,543 | $26.81 |
| Q2 2020 | +34,123 | Add 116.16% | 63,500 | $25.72 |
| Q1 2020 | -32,664 | Reduce 52.65% | 29,377 | $23.79 |
| Q4 2019 | -14,928 | Reduce 19.39% | 62,041 | $31.87 |
| Q3 2019 | +2,127 | Add 2.84% | 76,969 | $32.39 |
| Q2 2019 | -12,758 | Reduce 14.56% | 74,842 | $31.31 |
| Q1 2019 | +20,948 | Add 31.43% | 87,600 | $35.46 |
| Q4 2018 | -11,189 | Reduce 14.37% | 66,652 | $32.41 |
| Q3 2018 | -2,051 | Reduce 2.57% | 77,841 | $34.52 |
| Q2 2018 | +5,903 | Add 7.98% | 79,892 | $35.01 |
| Q1 2018 | +18,529 | Add 33.41% | 73,989 | $32.86 |
| Q4 2017 | +11,126 | Add 25.10% | 55,460 | $37.74 |
| Q3 2017 | -1,118 | Reduce 2.46% | 44,334 | $38.91 |
| Q2 2017 | -19,879 | Reduce 30.43% | 45,452 | $34.37 |
| Q1 2017 | +6,371 | Add 10.81% | 65,331 | $35.66 |
| Q4 2016 | -6,909 | Reduce 10.49% | 58,960 | $32.48 |
| Q3 2016 | +18,395 | Add 38.75% | 65,869 | $37.53 |
| Q2 2016 | +28,284 | Add 147.39% | 47,474 | $39.83 |
| Q1 2016 | -1,125 | Reduce 5.54% | 19,190 | $33.92 |
| Q3 2015 | -11,900 | Reduce 36.94% | 20,315 | $31.01 |
| Q2 2015 | +11,748 | Add 57.40% | 32,215 | $31.01 |
| Q1 2015 | +20,467 | New Buy | 20,467 | $36.50 |
Cliff Asness's Iron Mountain Incorporated Investment FAQs
Cliff Asness first purchased Iron Mountain Incorporated (IRM) in Q1 2015, acquiring 20,467 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness has held Iron Mountain Incorporated (IRM) for 45 quarters since Q1 2015.
Cliff Asness's largest addition to Iron Mountain Incorporated (IRM) was in Q1 2026, adding 1,846,073 shares worth $183.07 M.
According to the latest 13F filing for Q1 2026, Cliff Asness's firm, Aqr Capital Management LLC, owns 1,846,073 shares of Iron Mountain Incorporated (IRM), valued at approximately $183.07 M.
As of the Q1 2026 filing, Iron Mountain Incorporated (IRM) represents approximately 0.08% of Cliff Asness's publicly disclosed stock portfolio, making it one of their key holdings.
Cliff Asness's peak holding in Iron Mountain Incorporated (IRM) was 1,846,073 shares, as reported at the end of Q1 2026.