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Penobscot Investment Management’s Iron Mountain IRM Stock Holding History

Penobscot 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 		$210K Buy
+1,660
New +$204K 0.01% 307
2026
Q1 		– Sell
-3,490
Closed -$289K – 317
2025
Q4 		$289K Sell
3,490
-4,200
-55% -$393K 0.02% 271
2025
Q3 		$784K Buy
7,690
+2,650
+53% +$255K 0.06% 186
2025
Q2 		$517K Buy
+5,040
New +$475K 0.04% 213

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 $3.37T AUM 44.26% 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

Penobscot Investment Management's IRM Position: Q2 2026 in Review

Penobscot Investment Management opened a new position in Iron Mountain (IRM) in Q2 2026: 1,660 shares worth $210K. The stake represents 0.01% of the portfolio and ranks #307 among its holdings. This is a return to the name: Penobscot Investment Management previously reported a position in IRM as recently as Q4 2025.

Penobscot Investment Management first reported a position in IRM in Q2 2025 and has held it in 4 quarters since. The position peaked at $784K in Q3 2025. 1,165 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Penobscot Investment Management held 1,660 shares of Iron Mountain worth $210K as of Q2 2026.
  • Iron Mountain was a new Penobscot Investment Management position in Q2 2026.
  • Iron Mountain made up 0.01% of Penobscot Investment Management's portfolio in Q2 2026, its #307 holding.
  • Penobscot Investment Management first reported a position in Iron Mountain in Q2 2025 and has held it in 4 quarters since.
  • Penobscot Investment Management's Iron Mountain position peaked at $784K in Q3 2025.
  • 1,165 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Penobscot Investment Management's 13F filing for Q2 2026, filed 24 Jul 2026.