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IRM · PLD in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

IRMPLD
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • IRM
  • PLD
0102030202120222023202420252026
Holders and value by quarter
QuarterIRMPLD
Q3 20203 holders, $951m15 holders, $8.1bn
Q4 20203 holders, $865m20 holders, $7.5bn
Q1 20212 holders, $1.2bn24 holders, $8.0bn
Q2 20212 holders, $1.4bn21 holders, $9.0bn
Q3 20212 holders, $1.4bn21 holders, $10.0bn
Q4 20213 holders, $2.0bn19 holders, $13.4bn
Q1 20222 holders, $1.7bn18 holders, $12.3bn
Q2 20223 holders, $1.4bn27 holders, $9.0bn
Q3 20225 holders, $1.3bn28 holders, $8.1bn
Q4 20225 holders, $1.6bn26 holders, $9.4bn
Q1 20233 holders, $1.4bn24 holders, $10.1bn
Q2 20234 holders, $1.2bn22 holders, $9.3bn
Q3 20237 holders, $1.6bn21 holders, $8.4bn
Q4 20239 holders, $892m17 holders, $11.0bn
Q1 202410 holders, $758m19 holders, $10.8bn
Q2 20246 holders, $811m17 holders, $9.2bn
Q3 20246 holders, $956m16 holders, $10.5bn
Q4 202410 holders, $856m15 holders, $9.1bn
Q1 202511 holders, $1.1bn15 holders, $10.3bn
Q2 202511 holders, $1.8bn17 holders, $9.4bn
Q3 20256 holders, $1.7bn20 holders, $9.8bn
Q4 20256 holders, $1.3bn18 holders, $10.6bn
Q1 20269 holders, $1.7bn20 holders, $10.9bn
Q2 20266 holders, $2.0bn23 holders, $11.1bn
IRM

Iron MTN Inc Del

Holders
9
Reported value
$892m
Buyers
6
Sellers
3

Breadth +3 among 93 comparable managers.

Real estateReal estate investment trusts
PLD

Prologis Inc.

Holders
17
Reported value
$11.0bn
Buyers
7
Sellers
11

Breadth -4 among 93 comparable managers.

Real estateReal estate investment trusts

Who holds both, Q4 2023

Among the 21 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only IRM (4)

Maverick Capital Ltd, Point72 Asset Management LP, Schonfeld Strategic Advisors LLC, Voloridge Investment Management LLC

Only PLD (12)

AllianceBernstein LP, AQR Capital Management LLC, Baillie Gifford & Co, Capital Research Global Investors, Fidelity (FMR LLC), GAMCO Investors Inc, Holocene Advisors LP, Janus Henderson Group Ltd, Man Group PLC, MFS Investment Management, T. Rowe Price Associates Inc, Two Sigma Investments LP

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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