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IRM vs PLD

Iron Mountain Inc (IRM) and Prologis, Inc. (PLD) are both filed with the SEC under Real Estate Investment Trusts. PLD is 3.6× IRM's size by market cap ($132.3B against $36.5B); IRM trades at the higher fiscal-year P/E (250.4× against 39.8×); PLD reports the higher net margin (37.9% against 2.2%); PLD grew sales faster over three years (+13.7% against +10.6%); and over the past year IRM returned +31.1% against PLD's +29.0%.

IRMPLD
Last close$117.40$140.70
Market cap$36.5B$132.3B
P/E (FY)250.4×39.8×
P/S5.3×15.0×
EV/EBITDA24.1×23.8×
Operating margin16.9%49.6%
Net margin2.2%37.9%
Return on equity6.2%
Sales growth (3y)+10.6%+13.7%
EPS growth (3y)-36.3%-5.7%
Dividend yield2.5%2.8%
1-year return+31.1%+29.0%

Screener snapshot — prices as of 2026-08-28. Each side's last close is the most recent session the snapshot holds for that company, which can be an earlier one, and its 1-year return is measured to that close. Market caps struck on 2026-08-27. Last close, market cap and the 1-year return are price figures; every other row is computed over the company's latest filed fiscal year — FY2025 (ended 2025-12-31) for both. — not published for this company. A ratio goes unpublished for more than one reason: a component the calculation needs is not on file, the filing does not tag the line it is read from, or the calculation is not defined on the filed basis — EV/EBITDA is not printed on non-positive EBITDA, and return on equity is not computed on a zero or negative equity base.

Who holds them, and who has traded them

IRMPLD
Institutional holders (13F)1,0791,655
Insider buyers − sellers (180d)-5-1
Congressional trades disclosed (180d)01
Executive-branch officials on file — trades disclosed (180d)35

Counts only. The congressional figures count transactions dated in the trailing 180 days and disclosed in STOCK Act periodic transaction reports; amounts are filed as ranges and are never summed. The executive-branch figures count the same window of transactions, and they are scoped to one roster. The officials OGE posts for direct download. Insider buyers − sellers counts distinct people filing open-market Form 4 purchases minus distinct people filing open-market sales over the trailing 180 days, capped at ±5.

IRM vs PLD: common questions

Is IRM bigger than PLD?
PLD carries the larger market cap — $132.3B against $36.5B, both struck on 2026-08-27.
Which trades at a higher P/E, IRM or PLD?
IRM, at a fiscal-year 250.4× against 39.8× for PLD. Both are price ÷ latest full-year diluted earnings per share, not a trailing-twelve-month P/E.
How have IRM and PLD performed over the past year?
IRM returned +31.1% and PLD +29.0%, measured on the trailing calendar year to the last close.
How many institutions hold IRM and PLD?
1,079 13F filers report a position in IRM and 1,655 in PLD, on the latest quarter in the panel.
Are IRM and PLD in the same industry?
Both are filed with the SEC under Real Estate Investment Trusts, which is the classification this pairing is built on.

IRM overview · PLD overview · IRM institutional ownership · PLD institutional ownership · Congress and PLD · Executive branch and IRM · Executive branch and PLD

More in Real Estate Investment Trusts: AMT vs DLR · AMT vs EQIX · AMT vs IRM · AMT vs PLD

Stock comparisons lists every pair this site publishes.

Source: SPZCO — https://spzco.com/vs/irm-vs-pld