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AMT vs DLR

American Tower Corp /Ma/ (AMT) and Digital Realty Trust, Inc. (DLR) are both filed with the SEC under Real Estate Investment Trusts. AMT is 1.2× DLR's size by market cap ($81.1B against $67.5B); DLR trades at the higher fiscal-year P/E (53.7× against 32.3×); AMT reports the higher net margin (24.7% against 21.4%); DLR grew sales faster over three years (+9.2% against +3.3%); and over the past year DLR returned +12.5% against AMT's -9.6%.

AMTDLR
Last close$176.23$185.47
Market cap$81.1B$67.5B
P/E (FY)32.3×53.7×
P/S7.6×11.0×
EV/EBITDA17.0×
Operating margin45.5%10.8%
Net margin24.7%21.4%
Return on equity74.7%5.9%
Sales growth (3y)+3.3%+9.2%
EPS growth (3y)+12.2%+47.7%
Dividend yield3.9%2.6%
1-year return-9.6%+12.5%

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 A ratio goes unpublished for more than one reason: a component the calculation needs is not on file, the filing does not tag the line it is read from, or the calculation is not defined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

AMTDLR
Institutional holders (13F)1,7391,237
Insider buyers − sellers (180d)-2
Congressional trades disclosed (180d)31
Executive-branch officials on file — trades disclosed (180d)86

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. — no open-market Form 4 purchases or sales in the window.

AMT vs DLR: common questions

Is AMT bigger than DLR?
AMT carries the larger market cap — $81.1B against $67.5B, both struck on 2026-08-27.
Which trades at a higher P/E, AMT or DLR?
DLR, at a fiscal-year 53.7× against 32.3× for AMT. Both are price ÷ latest full-year diluted earnings per share, not a trailing-twelve-month P/E.
How have AMT and DLR performed over the past year?
DLR returned +12.5% and AMT -9.6%, measured on the trailing calendar year to the last close.
How many institutions hold AMT and DLR?
1,739 13F filers report a position in AMT and 1,237 in DLR, on the latest quarter in the panel.
Are AMT and DLR in the same industry?
Both are filed with the SEC under Real Estate Investment Trusts, which is the classification this pairing is built on.

AMT overview · DLR overview · AMT institutional ownership · DLR institutional ownership · Congress and AMT · Congress and DLR · Executive branch and AMT · Executive branch and DLR

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

Stock comparisons lists every pair this site publishes.

Source: SPZCO — https://spzco.com/vs/amt-vs-dlr