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GW&K Investment Management’s Iron Mountain IRM Stock Holding History

GW&K Investment Management’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 		$24.8M Buy
196,280
+196,036
+80,343% +$24M 0.19% 184
2026
Q1 		$25K Buy
244
+39
+19% +$3.88K ﹤0.01% 703
2025
Q4 		$17K Buy
205
+16
+8% +$1.5K ﹤0.01% 780
2025
Q3 		$19K Buy
189
+10
+6% +$963 ﹤0.01% 755
2025
Q2 		$18K Sell
179
-4
-2% -$377 ﹤0.01% 740
2025
Q1 		$16K Buy
183
+25
+16% +$2.41K ﹤0.01% 700
2024
Q4 		$17K Buy
158
+7
+5% +$822 ﹤0.01% 662
2024
Q3 		$18K Sell
151
-221
-59% -$23.6K ﹤0.01% 631
2024
Q2 		$33K Buy
372
+15
+4% +$1.21K ﹤0.01% 487
2024
Q1 		$29K Sell
357
-12
-3% -$869 ﹤0.01% 484
2023
Q4 		$26K Buy
369
+90
+32% +$5.65K ﹤0.01% 479
2023
Q3 		$17K Buy
279
+2
+0.7% +$122 ﹤0.01% 504
2023
Q2 		$16K Buy
277
+137
+98% +$7.5K ﹤0.01% 505
2023
Q1 		$7K Hold
140
– – ﹤0.01% 405
2022
Q4 		$7K Hold
140
– – ﹤0.01% 376
2022
Q3 		$6K Sell
140
-70
-33% -$3.54K ﹤0.01% 369
2022
Q2 		$10K Buy
210
+40
+24% +$2.1K ﹤0.01% 476
2022
Q1 		$9K Buy
+170
New +$8.1K ﹤0.01% 443

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

GW&K Investment Management's IRM Position: Q2 2026 in Review

GW&K Investment Management increased its Iron Mountain (IRM) stake by 80,343% in Q2 2026, buying an estimated $24M and bringing the position to 196,280 shares worth $24.8M. The position accounts for 0.19% of the portfolio, ranked #184.

GW&K Investment Management first reported a position in IRM in Q1 2022 and has held it in 18 quarters since. 1,174 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • GW&K Investment Management held 196,280 shares of Iron Mountain worth $24.8M as of Q2 2026.
  • GW&K Investment Management bought 196,036 Iron Mountain shares in Q2 2026, an estimated $24M.
  • Iron Mountain made up 0.19% of GW&K Investment Management's portfolio in Q2 2026, its #184 holding.
  • GW&K Investment Management first reported a position in Iron Mountain in Q1 2022 and has held it in 18 quarters since.
  • 1,174 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on GW&K Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.