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AMT

American Tower Corporation

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AMT in the last 90 days

American Tower Corporation (AMT) had no congress transactions and 1 insider purchase worth $500,733 by 1 insider in filings from the last 90 days.

FINRA’s latest report (settlement 15 SEPT 2026) shows 6,084,092 shares held short, 2.8 days to cover, up 2.6% from the report before.

  • Insiders: open-market purchases only (Form 4 code P); a purchase filed by related owners counts once.
  • Delay: each filing below shows how many days passed between the trade and its publication. None of this is real-time.

Latest filing on file: 25 AUG 2026 · FINRA settlement 15 SEPT 2026 · public filings, reported as filed

What the filings show

What the filings show · last 90 days

2 of 4 sources

+49Tilted in

Leaning outBalancedLeaning in

The disclosed money is leaning into this name, on what has actually been filed. This reads on two of the four sources we track.

Short interest
Short interest fell 20.4% — 7,640,281 to 6,084,092 shares between 15 JUL 2026 and 15 SEPT 2026. See the filings →
+51
Insider purchases
1 insider disclosed buying $500,733 across 1 filing.
+46

This summarises filings that have already been published — it is not a forecast, a rating of the company, or advice. Every figure above is listed in full further down this page, with the document it came from.

FINRA short interest

Settlement 15 SEPT 2026 · shares held short

6,084,092shares held short

Days to cover

2.77

Avg daily volume

2,193,410

Since last report

+2.61%

As of 15 September 2026, 6,084,092 American Tower Corporation shares were held short — the total across every reporting firm, not one fund's position. That is 154,870 shares more than the previous report, a 2.61% increase. At the average daily volume of 2,193,410 shares, that position represents 2.77 days of trading — what the filing calls days to cover.

This is the most recent figure that exists, and it is 17 days old. FINRA collects short interest twice a month, on a settlement date, and publishes it about eight business days later. So nobody has a live short-interest number for AMT — not us, and not anyone quoting one. We print the settlement date on the figure so you always know which day you are looking at.

Across the 12 reports we hold, the position has fallen from 6,981,335 shares on 31 March 2026 to 6,084,092 today, a change of 12.9%. The highest reading in that window was 9,063,793 shares on 29 May 2026.

SettlementShares shortDays to cover
15 SEPT 20266,084,0922.77
31 AUG 20265,929,2223.06
14 AUG 20267,032,0652.97
31 JUL 20267,601,7202.20
15 JUL 20267,640,2812.48
30 JUN 20267,656,8911.92
15 JUN 20268,952,5672.76
29 MAY 20269,063,7932.91
15 MAY 20268,986,5813.22
30 APR 20268,044,8432.60
15 APR 20266,841,0612.24
31 MAR 20266,981,3351.88
What is AMT's short interest?
6,084,092 shares, as of the 15 September 2026 settlement date. That is the figure FINRA published, unadjusted.
What percentage of the float is short?
We do not publish that, because FINRA does not publish float. The regulator reports the number of shares held short; turning it into a percentage needs a share count from somewhere else, and different sources disagree about what counts as float. We would rather give you the number that was actually filed than a percentage built on an assumption.
How current is this?
It is 17 days old, and that is as fresh as short interest gets. FINRA measures it twice a month and publishes it seven business days after the settlement date. Any site showing you a "live" short interest figure is showing you something else.
What does days to cover mean?
It is the short position divided by average daily trading volume — here, 2.77. It describes how many days of ordinary trading the position is equivalent to. It is arithmetic from the filing, not a prediction about what will happen.
Where does this come from?
FINRA's consolidated short interest file, which is public. We read it directly and store it unchanged, except that we blank the days-to-cover placeholder FINRA writes when a stock has almost no volume.

Disclosed insider buying on file

$500,733across 1 purchase

Open-market purchases only — the amount is a fact, not a verdict.

On file here

Short positions0

Insider purchases1

Congress transactions7

Latest change25 AUG 2026

SHORT POSITIONS · 0INSIDER BUYS · 1CONGRESS · 7

Insider purchases on file

  • SEC — Form 4 insider purchase

    Kalathur RajeshDirector

    BOUGHTCommon Stock

    $500,733

    2,829 sh @ $177

    21 AUG 2026 → filed 25 AUG 2026

    Filed 4 days after the tradeSEC EDGAR · 0001053507-26-000139 →

Congress transactions on file

7 disclosed · newest first · every row links to its filing

WhoAmount as filedTradedFiledLag
Hon. Dwight EvansSOLD$1,001 – $15,00011 MAY 202615 MAY 20264 days
Hon. Richard Dean Dr McCormickSOLD$1,001 – $15,00017 APR 202612 MAY 202625 days
Hon. Richard Dean Dr McCormickBOUGHT$1,001 – $15,00015 MAR 202317 SEPT 2025917 days — the law says 45
Hon. Jefferson ShreveSOLD$15,001 – $50,00012 MAY 202522 JUN 202541 days
Hon. Rob BresnahanBOUGHT$1,001 – $15,00008 APR 202508 MAY 202530 days
Hon. Dwight EvansSOLD$1,001 – $15,000 · partial03 APR 202517 APR 202514 days
Hon. Julie JohnsonSOLD$1,001 – $15,00015 JAN 202512 FEB 202528 days
What this page will never showNo price targetsNo score out of 100No buy or sell callsNo predictionsDocuments, dates, and how late they were.