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GAMMA Investing’s Iron Mountain IRM Stock Holding History

GAMMA Investing’s Portfolio IRM Stock Details IRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$975K Buy
7,716
+1,095
+17% +$134K 0.04% 405
2026
Q1 		$676K Buy
6,621
+2,091
+46% +$208K 0.03% 464
2025
Q4 		$376K Sell
4,530
-1,967
-30% -$184K 0.02% 656
2025
Q3 		$662K Buy
6,497
+1,021
+19% +$98.4K 0.04% 421
2025
Q2 		$562K Buy
5,476
+1,504
+38% +$142K 0.04% 438
2025
Q1 		$342K Sell
3,972
-357
-8% -$34.4K 0.03% 545
2024
Q4 		$455K Buy
4,329
+535
+14% +$62.9K 0.04% 386
2024
Q3 		$451K Buy
3,794
+815
+27% +$87.2K 0.04% 359
2024
Q2 		$267K Buy
2,979
+1,173
+65% +$94.9K 0.04% 416
2024
Q1 		$145K Buy
1,806
+247
+16% +$17.9K 0.03% 496
2023
Q4 		$105K Buy
+1,559
New +$97.8K 0.03% 528

Other funds holding IRM

Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
COPPSERS
Commonwealth of Pennsylvania Public School Employees Retirement System Harrisburg, Pennsylvania $20.6B AUM 37.37% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return
Handelsbanken Fonder
Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return
SOADOR
State of Alaska Department of Revenue Juneau, Alaska $10.1B AUM 42.83% 1-Year Est. Return
TA
Tectonic Advisors Frisco, Texas $2.08B AUM 16.31% 1-Year Est. Return
VAM
Vert Asset Management Sausalito, California $365M AUM 18.19% 1-Year Est. Return
BCM
Brookstone Capital Management Wheaton, Illinois $9.99B AUM 23.61% 1-Year Est. Return
II
IFM Investors Melbourne, Australia $15.1B AUM 40.57% 1-Year Est. Return

GAMMA Investing's IRM Position: Q2 2026 in Review

GAMMA Investing increased its Iron Mountain (IRM) stake by 17% in Q2 2026, buying an estimated $134K and bringing the position to 7,716 shares worth $975K. The position accounts for 0.04% of the portfolio, ranked #405.

GAMMA Investing first reported a position in IRM in Q4 2023 and has held it in 11 quarters since. 247 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • GAMMA Investing held 7,716 shares of Iron Mountain worth $975K as of Q2 2026.
  • GAMMA Investing bought 1,095 Iron Mountain shares in Q2 2026, an estimated $134K.
  • Iron Mountain made up 0.04% of GAMMA Investing's portfolio in Q2 2026, its #405 holding.
  • GAMMA Investing first reported a position in Iron Mountain in Q4 2023 and has held it in 11 quarters since.
  • 247 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on GAMMA Investing's 13F filing for Q2 2026, filed 7 Jul 2026.