# AMT · American Tower Corp

Snapshot 2026-10-26 · CIK 0001053507 · NYSE · Real Estate Investment Trusts

Price 188.97 (2026-10-23, Alpaca Market Data (consolidated SIP daily bar)) · Market cap 88.05 B

Machine-readable: https://theclaudetrader.com/s/AMT.json · index: https://theclaudetrader.com/llms.txt

## Scores

### Graham Defensive: — (not scored (financial)) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/graham

### Magic Formula: — (not scored) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/magic_formula

### Momentum: 47.8 (ok) · complete: True · missing tests: none · current inputs as of 2026-10-23 · stale inputs: none · history None–None · price 2026-10-23 · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/momentum
-  12-1 month return: -7.6 % · threshold  · points 14.5/50
-  6 month return: 7.7 % · threshold  · points 12.0/20
-  Price / 52-week high: 0.993  · threshold  · points 14.9/15
-  Volatility penalty (60d annualised): 29.9 % · threshold  · points 6.4/15

Inputs:
  - Adjusted close series (14 months): 188.97 · 2026-10-23 · Yahoo Finance / Alpaca Market Data daily history · 

### Insider: 43.7 (ok) · complete: True · missing tests: none · current inputs as of 2026-10-23 · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/insider
-  Open-market buy value / market cap (percentile among buyers): 0.06 bp · threshold  · points 14.7/35
-  Distinct buyers: 2  · threshold  · points 12.5/25
-  Buyer seniority: 0.5  · threshold  · points 10.0/20
-  Recency (half-life 30d): 0.87  · threshold  · points 8.7/10
-  Sales penalty (excludes 10b5-1 plan sales): 0.1 bp · threshold  · points -2.2/0

Inputs:
  - Form 4 P Clarke Teresa Hillary 2026-10-20: 7864.0432 · 2026-10-20 · SEC Form 4 (insider transactions data set) · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
  - Form 4 P Kalathur Rajesh 2026-08-21: 500733.0 · 2026-08-21 · SEC Form 4 (insider transactions data set) · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000139/
  - Form 4 S Meyer Robert Joseph 2026-07-29: 894449.9999999999 · 2026-07-29 · SEC Form 4 (insider transactions data set) · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000137/
  - excluded 2026-07-29 S: 10b5-1 plan ·  · rule · 
  - excluded 2026-07-28 S: 10b5-1 plan ·  · rule · 

### Buffett Quality: — (not scored (financial)) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/buffett

### Lynch GARP: — (not scored (financial)) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/lynch

### Graham Enterprising: — (not scored (financial)) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/graham_enterprising

### Piotroski F-Score: — (not scored (financial)) · complete: None · missing tests: none · current inputs as of None · stale inputs: none · history None–None · price None · verification None · computed 2026-10-26 · rules https://theclaudetrader.com/p/piotroski

## Market value, source trail

- Formula: market_value = traded_price (price date) / depositary_ratio x latest point-in-time SEC shares outstanding (share-count date shown; from the filing cover page, summed across share classes only where the issuer filing verifies the classes are economically equivalent (rule + evidence URL in the source text), else withheld; priced at the primary listed class, so where other classes trade at a different price the value is an approximation; restated only for issuer-verified splits after the count date); weighted-average share counts are never used
- Traded price: 188.97 on 2026-10-23 (USD per traded unit (share or ADS)) · https://docs.alpaca.markets/docs/historical-stock-data-1
- SEC shares outstanding: 465,960,048 underlying shares, period 2026-07-21, SEC cover page 10-Q 0001053507-26-000133 (465,960,048 shares (single class on cover)); filing document https://www.sec.gov/Archives/edgar/data/1053507/000105350726000133/amt-20260630.htm, accession 0001053507-26-000133 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000133/R1.htm
- Depositary ratio: 1.0 (domestic; 10-K filer; SEC shares are the traded units) · None
- Market value (price date x latest reported shares): 88,052,470,271 USD; 188.97 (price 2026-10-23) / 1 x 465,960,048 (shares at 2026-07-21) = 88,052,470,271

## Revenue by fiscal year (SEC XBRL; FY = calendar year in which the fiscal year ends)

- FY2013 (ended 2013-12-31): 3361407000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350716000018/
- FY2014 (ended 2014-12-31): 4100048000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350717000009/
- FY2015 (ended 2015-12-31): 4771500000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350718000006/
- FY2016 (ended 2016-12-31): 5785700000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350719000012/
- FY2017 (ended 2017-12-31): 6663900000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350720000028/
- FY2018 (ended 2018-12-31): 7440100000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350721000026/
- FY2019 (ended 2019-12-31): 7580300000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350722000017/
- FY2020 (ended 2020-12-31): 8041500000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350723000023/
- FY2021 (ended 2021-12-31): 9356900000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350724000011/
- FY2022 (ended 2022-12-31): 9645400000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350725000025/
- FY2023 (ended 2023-12-31): 10012200000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/
- FY2024 (ended 2024-12-31): 10127200000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/
- FY2025 (ended 2025-12-31): 10644600000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/

## Net income by fiscal year (SEC XBRL)

- FY2013 (ended 2013-12-31): 551333000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350716000018/
- FY2014 (ended 2014-12-31): 824910000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350717000009/
- FY2015 (ended 2015-12-31): 685100000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350718000006/
- FY2016 (ended 2016-12-31): 956400000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350719000012/
- FY2017 (ended 2017-12-31): 1238900000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350720000028/
- FY2018 (ended 2018-12-31): 1236400000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350721000026/
- FY2019 (ended 2019-12-31): 1887800000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350721000026/
- FY2020 (ended 2020-12-31): 1690600000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350721000026/
- FY2021 (ended 2021-12-31): 2567600000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350724000011/
- FY2022 (ended 2022-12-31): 1696700000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350725000025/
- FY2023 (ended 2023-12-31): 1367100000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/
- FY2024 (ended 2024-12-31): 2280200000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/
- FY2025 (ended 2025-12-31): 2628500000.0 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000035/

## EPS diluted by fiscal year (split-adjusted to today's share basis; as filed in brackets)

- FY2013 (ended 2013-12-31): 1.38 [filed 1.38, split factor 1.0]
- FY2014 (ended 2014-12-31): 2.0 [filed 2.0, split factor 1.0]
- FY2015 (ended 2015-12-31): 1.41 [filed 1.41, split factor 1.0]
- FY2016 (ended 2016-12-31): 1.98 [filed 1.98, split factor 1.0]
- FY2017 (ended 2017-12-31): 2.67 [filed 2.67, split factor 1.0]
- FY2018 (ended 2018-12-31): 2.77 [filed 2.77, split factor 1.0]
- FY2019 (ended 2019-12-31): 4.24 [filed 4.24, split factor 1.0]
- FY2020 (ended 2020-12-31): 3.79 [filed 3.79, split factor 1.0]
- FY2021 (ended 2021-12-31): 5.66 [filed 5.66, split factor 1.0]
- FY2022 (ended 2022-12-31): 3.82 [filed 3.82, split factor 1.0]
- FY2023 (ended 2023-12-31): 3.18 [filed 3.18, split factor 1.0]
- FY2024 (ended 2024-12-31): 4.82 [filed 4.82, split factor 1.0]
- FY2025 (ended 2025-12-31): 5.4 [filed 5.4, split factor 1.0]

## Dividend years (Yahoo history)

2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026

## Insider transactions (SEC Form 4 data set, latest 40)

- 2026-10-20 P Clarke Teresa Hillary (director) 43 @ 183.20 = 7864 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2026-08-21 P Kalathur Rajesh (director) 2829 @ 177.00 = 500733 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000139/
- 2026-07-29 S Dowling Ruth T (officer) 1106 @ 174.96 = 193506 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000135/
- 2026-07-29 S Meyer Robert Joseph (CFO) 5000 @ 178.89 = 894450 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000137/
- 2026-07-28 S Dowling Ruth T (officer) 685 @ 169.54 = 116135 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000135/
- 2026-07-13 P Clarke Teresa Hillary (director) 46 @ 167.52 = 7781 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2026-04-29 S Dowling Ruth T (officer) 416 @ 177.54 = 73857 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000105/
- 2026-04-28 P Clarke Teresa Hillary (director) 44 @ 177.08 = 7703 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2026-04-28 S Dowling Ruth T (officer) 556 @ 178.48 = 99235 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000105/
- 2026-02-02 P Clarke Teresa Hillary (director) 31 @ 178.04 = 5468 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2025-10-20 P Clarke Teresa Hillary (director) 29 @ 189.12 = 5420 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2025-07-11 P Clarke Teresa Hillary (director) 24 @ 223.23 = 5379 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2025-04-28 P Clarke Teresa Hillary (director) 25 @ 209.33 = 5335 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2025-02-03 P Clarke Teresa Hillary (director) 18 @ 187.27 = 3292 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2024-10-25 P Clarke Teresa Hillary (director) 14 @ 227.42 = 3268 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2024-07-12 P Clarke Teresa Hillary (director) 16 @ 204.28 = 3243 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2024-04-26 P Clarke Teresa Hillary (director) 19 @ 172.82 = 3212 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2024-02-01 P Clarke Teresa Hillary (director) 8 @ 199.95 = 1536 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2023-10-27 P Clarke Teresa Hillary (director) 8 @ 171.52 = 1450 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2023-07-10 P Clarke Teresa Hillary (director) 7 @ 193.78 = 1394 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live
- 2023-04-28 P Clarke Teresa Hillary (director) 7 @ 205.93 = 1374 · https://www.sec.gov/Archives/edgar/data/1053507/000105350726000151/#live

## Links

- sec_filings: https://www.sec.gov/edgar/browse/?CIK=0001053507
- sec_xbrl_companyfacts: https://data.sec.gov/api/xbrl/companyfacts/CIK0001053507.json
- sec_form4: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001053507&type=4
- sec_8k: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001053507&type=8-K
- yahoo: https://finance.yahoo.com/quote/AMT
- stooq: https://stooq.com/q/d/?s=amt.us
- morningstar (link only, nothing stored): https://www.morningstar.com/search?query=AMT
- finviz (link only, nothing stored): https://finviz.com/quote.ashx?t=AMT
- stockanalysis (link only, nothing stored): https://stockanalysis.com/stocks/amt/
- seeking_alpha (link only, nothing stored): https://seekingalpha.com/symbol/AMT
- openinsider (link only, nothing stored): http://openinsider.com/search?q=AMT
- google_news (link only, nothing stored): https://news.google.com/rss/search?q=AMT+stock

Cite as: The Claude Trader snapshot 2026-10-26, https://theclaudetrader.com/s/AMT; data from SEC EDGAR XBRL and market prices (Alpaca Market Data, Yahoo Finance) to 2026-10-23.

Scores are deterministic rule outputs from public filings. fair_value_model is a labelled model estimate from the same filings (method at /fair-value), not an opinion or recommendation.