# IRON MTN INC DEL COM

IRON MTN INC DEL COM is a security (CUSIP 46284V101) tracked across SEC portfolio filings. 1,170 institutional managers reported $22.9B on Form 13F as of 2026-06-30; 84 registered fund positions totaling $2.3B via N-PORT as of 2026-06-30.

## Summary

- Issuer: IRON MTN INC DEL
- Class: COM
- CUSIP: 46284V101
- Asset category: EC
- 13F holders: 1,170
- 13F value: $22.9B
- 13F period: 2026-06-30
- N-PORT fund positions: 84
- N-PORT value: $2.3B
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 1,170 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $3.9B | 46,627,483 |
| BlackRock, Inc. | New York, NY | $3.4B | 33,021,354 |
| STATE STREET CORP | BOSTON, MA | $1.8B | 17,551,633 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $863.7M | 8,486,127 |
| FMR LLC | BOSTON, MA | $764.5M | 7,484,398 |
| PRINCIPAL FINANCIAL GROUP INC | DES MOINES, IA | $552.4M | 4,373,424 |
| MORGAN STANLEY | NEW YORK, NY | $475.2M | 4,652,247 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $464.9M | 4,552,286 |
| NORTHERN TRUST CORP | CHICAGO, IL | $423.9M | 4,150,486 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $409.9M | 4,013,007 |
| Legal & General Group Plc | London, X0 | $320.2M | 3,135,074 |
| DEUTSCHE BANK AG\\ | Frankfurt Am Main, 2M | $315.8M | 3,092,084 |
| PRUDENTIAL FINANCIAL INC | NEWARK, NJ | $246.8M | 2,416,063 |
| Vontobel Holding Ltd. | ZURICH, V8 | $242.5M | 1,919,656 |
| CENTERSQUARE INVESTMENT MANAGEMENT LLC | PLYMOUTH MEETING, PA | $235.9M | 2,310,045 |

## Top fund holders (N-PORT)

_Showing 15 of 84 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | State Street(R) SPDR(R) S&P 500(R) ETF Trust | $351.2M | 5.39% |
| [Cohen & Steers Institutional Realty Shares](https://search.stillhousedata.com/fund/S000011976) | COHEN & STEERS INSTITUTIONAL REALTY SHARES INC | $315.8M | 384.79% |
| [Cohen & Steers Realty Shares](https://search.stillhousedata.com/fund/S000011975) | COHEN & STEERS REALTY SHARES INC | $282.0M | 386.44% |
| [State Street(R) Real Estate Select Sector SPDR(R) ETF](https://search.stillhousedata.com/fund/S000051152) | SELECT SECTOR SPDR TRUST | $250.2M | 342.44% |
| [Cohen & Steers Real Estate Securities Fund](https://search.stillhousedata.com/fund/S000001225) | COHEN & STEERS REAL ESTATE SECURITIES FUND INC | $237.6M | 275.18% |
| [Income Fund of America](https://search.stillhousedata.com/fund/S000008814) | Income Fund of America | $235.2M | 16.05% |
| [Invesco S&P 500 Equal Weight ETF](https://search.stillhousedata.com/fund/S000060812) | Invesco Exchange-Traded Fund Trust | $197.6M | 22.49% |
| COHEN & STEERS QUALITY INCOME REALTY FUND INC | COHEN & STEERS QUALITY INCOME REALTY FUND INC | $67.7M | 412.77% |
| [Cohen & Steers Global Realty Shares, Inc.](https://search.stillhousedata.com/fund/S000001226) | COHEN & STEERS GLOBAL REALTY SHARES, INC | $37.0M | 180.33% |
| Apollo Diversified Real Estate Fund | APOLLO DIVERSIFIED REAL ESTATE FUND | $27.1M | 80.52% |
| CBRE Global Real Estate Income Fund | CBRE Global Real Estate Income Fund | $24.5M | 381.34% |
| COHEN & STEERS REIT & PREFERRED & INCOME FUND INC | COHEN & STEERS REIT & PREFERRED & INCOME FUND INC | $24.4M | 247.71% |
| [Global Real Estate Fund](https://search.stillhousedata.com/fund/S000031879) | American Century Capital Portfolios, Inc. | $23.3M | 286.42% |
| Reaves Utility Income Fund | Reaves Utility Income Fund | $20.2M | 49.74% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $18.4M | 5.06% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/46284v101.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.