American Tower (AMT)
American Tower on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as real estate investment trusts.
6.8M
Short interest
settlement 2026-10-15
2.0
Days to cover
-0.5 days vs prior
41.3%
Short share of volume
2026-10-28
104
Fails to deliver
settlement 2026-09-29
Tue 23 Feb
Next earnings
estimated date
$509K
Insider flow, 90 days
2 buys, 0 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in AMT is 6,778,966 shares, up 694,874 shares over the last month. Over the last 48 readings it ranged from 4,545,159 shares (13 December 2024) to 9,063,793 shares (29 May 2026). At the reported average volume of 3.5M shares a day that is 2.0 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 6,778,966 | -7.8% | 3,467,491 | 1.96 |
| 2026-09-30 | 7,349,221 | +20.8% | 3,021,983 | 2.43 |
| 2026-09-15 | 6,084,092 | +2.6% | 2,193,410 | 2.77 |
| 2026-08-31 | 5,929,222 | -15.7% | 1,935,902 | 3.06 |
| 2026-08-14 | 7,032,065 | -7.5% | 2,364,087 | 2.97 |
| 2026-07-31 | 7,601,720 | -0.5% | 3,458,704 | 2.20 |
| 2026-07-15 | 7,640,281 | -0.2% | 3,083,594 | 2.48 |
| 2026-06-30 | 7,656,891 | -14.5% | 3,993,208 | 1.92 |
| 2026-06-15 | 8,952,567 | -1.2% | 3,243,947 | 2.76 |
| 2026-05-29 | 9,063,793 | +0.9% | 3,110,003 | 2.91 |
| 2026-05-15 | 8,986,581 | +11.7% | 2,790,554 | 3.22 |
| 2026-04-30 | 8,044,843 | +17.6% | 3,095,373 | 2.60 |
| 2026-04-15 | 6,841,061 | -2.0% | 3,060,274 | 2.24 |
| 2026-03-31 | 6,981,335 | +6.8% | 3,712,926 | 1.88 |
| 2026-03-13 | 6,536,992 | +3.7% | 2,832,962 | 2.31 |
| 2026-02-27 | 6,301,990 | -6.6% | 3,148,357 | 2.00 |
| 2026-02-13 | 6,744,851 | +13.8% | 3,407,523 | 1.98 |
| 2026-01-30 | 5,928,746 | -10.4% | 3,614,678 | 1.64 |
| 2026-01-15 | 6,615,588 | +3.7% | 2,849,029 | 2.32 |
| 2025-12-31 | 6,378,028 | +5.0% | 2,987,213 | 2.14 |
| 2025-12-15 | 6,074,387 | +1.3% | 3,679,959 | 1.65 |
| 2025-11-28 | 5,998,677 | +2.3% | 2,904,038 | 2.07 |
| 2025-11-14 | 5,864,326 | +18.5% | 2,986,032 | 1.96 |
| 2025-10-31 | 4,948,438 | +0.8% | 2,794,501 | 1.77 |
| 2025-10-15 | 4,906,974 | +6.4% | 3,074,870 | 1.60 |
| 2025-09-30 | 4,610,775 | -17.3% | 3,234,233 | 1.43 |
| 2025-09-15 | 5,577,255 | -3.2% | 3,443,976 | 1.62 |
| 2025-08-29 | 5,760,876 | +6.5% | 2,439,916 | 2.36 |
| 2025-08-15 | 5,409,719 | -0.8% | 2,306,411 | 2.35 |
| 2025-07-31 | 5,455,005 | -8.9% | 2,182,474 | 2.50 |
| 2025-07-15 | 5,990,512 | -7.5% | 1,755,321 | 3.41 |
| 2025-06-30 | 6,472,858 | -0.1% | 2,253,122 | 2.87 |
| 2025-06-13 | 6,480,364 | +24.8% | 1,997,467 | 3.24 |
| 2025-05-30 | 5,192,225 | -15.7% | 2,338,398 | 2.22 |
| 2025-05-15 | 6,156,490 | +4.4% | 3,062,454 | 2.01 |
| 2025-04-30 | 5,896,044 | +9.1% | 3,395,722 | 1.74 |
| 2025-04-15 | 5,403,307 | -18.6% | 4,444,553 | 1.22 |
| 2025-03-31 | 6,637,325 | -6.2% | 2,935,037 | 2.26 |
| 2025-03-14 | 7,072,130 | +14.5% | 3,010,168 | 2.35 |
| 2025-02-28 | 6,178,734 | +2.5% | 3,003,338 | 2.06 |
| 2025-02-14 | 6,025,672 | +5.7% | 1,732,843 | 3.48 |
| 2025-01-31 | 5,699,695 | +12.0% | 2,196,955 | 2.59 |
| 2025-01-15 | 5,090,077 | +1.3% | 2,407,966 | 2.11 |
| 2024-12-31 | 5,022,645 | +10.5% | 2,726,715 | 1.84 |
| 2024-12-13 | 4,545,159 | -6.8% | 2,420,722 | 1.88 |
| 2024-11-29 | 4,877,735 | -2.2% | 2,198,657 | 2.22 |
| 2024-11-15 | 4,987,554 | +4.7% | 3,231,183 | 1.54 |
| 2024-10-31 | 4,761,833 | +0.5% | 2,046,716 | 2.33 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of AMT volume is 41.3%, up 3.1 points over the last five sessions. Over the last 30 readings it ranged from 23.5% (2 October 2026) to 59.8% (28 September 2026). The latest reading is in line with the 30-session average of 39.7%, on 1.7M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 693K | 1.7M | 41.3% | 0 |
| 2026-10-27 | 482K | 1.3M | 36.5% | 34 |
| 2026-10-26 | 905K | 1.9M | 47.2% | 2,192 |
| 2026-10-23 | 1.6M | 3.8M | 41.5% | 13,069 |
| 2026-10-22 | 339K | 1.2M | 27.8% | 6,613 |
| 2026-10-21 | 385K | 1.0M | 38.2% | 255 |
| 2026-10-20 | 417K | 970K | 43.0% | 8,982 |
| 2026-10-19 | 267K | 935K | 28.6% | 20 |
| 2026-10-16 | 397K | 820K | 48.4% | 172 |
| 2026-10-15 | 332K | 834K | 39.8% | 1,315 |
| 2026-10-14 | 392K | 1.0M | 38.1% | 316 |
| 2026-10-13 | 404K | 1.2M | 33.1% | 1,946 |
| 2026-10-12 | 447K | 1.3M | 34.2% | 43 |
| 2026-10-09 | 1.5M | 3.5M | 43.3% | 3,305 |
| 2026-10-08 | 521K | 1.4M | 37.5% | 30 |
| 2026-10-07 | 321K | 836K | 38.3% | 724 |
| 2026-10-06 | 234K | 940K | 24.9% | 322 |
| 2026-10-05 | 232K | 877K | 26.4% | 1,533 |
| 2026-10-02 | 257K | 1.1M | 23.5% | 273 |
| 2026-10-01 | 360K | 960K | 37.5% | 1,136 |
| 2026-09-30 | 488K | 900K | 54.2% | 4,345 |
| 2026-09-29 | 524K | 957K | 54.7% | 3 |
| 2026-09-28 | 666K | 1.1M | 59.8% | 111 |
| 2026-09-25 | 335K | 734K | 45.7% | 2,914 |
| 2026-09-24 | 344K | 918K | 37.5% | 627 |
| 2026-09-23 | 372K | 770K | 48.3% | 460 |
| 2026-09-22 | 396K | 920K | 43.0% | 118 |
| 2026-09-21 | 253K | 583K | 43.4% | 542 |
| 2026-09-18 | 289K | 708K | 40.9% | 1,250 |
| 2026-09-17 | 370K | 1.1M | 34.0% | 2,324 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 29 September 2026, the fails-to-deliver balance in AMT is 104 shares, down 3,227 shares over the last settlement date. Over the last 30 readings it ranged from 19 shares (23 July 2026) to 36,438 shares (6 August 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-29 | 104 | $168.00 | $17K |
| 2026-09-22 | 3,331 | $174.60 | $582K |
| 2026-09-21 | 3,637 | $173.98 | $633K |
| 2026-09-18 | 3,609 | $175.58 | $634K |
| 2026-09-17 | 5,619 | $176.39 | $991K |
| 2026-09-10 | 1,512 | $175.43 | $265K |
| 2026-09-09 | 1,791 | $175.73 | $315K |
| 2026-09-04 | 3,618 | $177.75 | $643K |
| 2026-09-03 | 3,430 | $172.92 | $593K |
| 2026-09-01 | 630 | $175.70 | $111K |
| 2026-08-28 | 3,477 | $174.16 | $606K |
| 2026-08-26 | 599 | $178.57 | $107K |
| 2026-08-24 | 5,031 | $175.80 | $884K |
| 2026-08-17 | 3,451 | $175.58 | $606K |
| 2026-08-14 | 1,493 | $174.19 | $260K |
| 2026-08-12 | 7,889 | $169.55 | $1.3M |
| 2026-08-10 | 4,168 | $172.54 | $719K |
| 2026-08-06 | 36,438 | $168.07 | $6.1M |
| 2026-08-04 | 5,042 | $173.00 | $872K |
| 2026-08-03 | 13,391 | $173.36 | $2.3M |
| 2026-07-31 | 184 | $174.46 | $32K |
| 2026-07-30 | 1,409 | $179.26 | $253K |
| 2026-07-29 | 411 | $171.50 | $70K |
| 2026-07-28 | 26,600 | $166.74 | $4.4M |
| 2026-07-27 | 11,885 | $166.67 | $2.0M |
| 2026-07-24 | 1,757 | $164.65 | $289K |
| 2026-07-23 | 19 | $166.06 | $3K |
| 2026-07-22 | 495 | $163.39 | $81K |
| 2026-07-16 | 1,032 | $168.63 | $174K |
| 2026-07-13 | 43 | $168.59 | $7K |
Insider trades
SEC Form 4, newest first. JSONInsiders at AMT reported 2 open-market buys worth $509K in the last 90 days and no open-market sells. Latest filing: Clarke Teresa Hillary (Director) on 2026-10-20.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-20 | Clarke Teresa Hillary | Director | Buy | 43 | $183.20 | $8K | 6K |
| 2026-10-01 | Blanchett Paul | SVP & Chief Accounting Officer | Grant | 16K | $0.00 | $0 | 16K |
| 2026-08-21 | Kalathur Rajesh | Director | Buy | 3K | $177.00 | $501K | 8K |
| 2026-07-29 | Meyer Robert Joseph | SVP & Advisor to the CFO | Sell | 5K | $178.89 | $894K | 21K |
| 2026-07-29 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 1K | $174.96 | $194K | 28K |
| 2026-07-28 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 685 | $169.54 | $116K | 29K |
| 2026-07-13 | Clarke Teresa Hillary | Director | Buy | 46 | $167.52 | $8K | 6K |
| 2026-06-01 | Meyer Robert Joseph | SVP & Advisor to the CFO | Tax withholding | 153 | $187.53 | $29K | 26K |
| 2026-05-28 | REEVE PAMELA D A | Director | Gift | 810 | $0.00 | $0 | 21K |
| 2026-04-29 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 416 | $177.54 | $74K | 29K |
| 2026-04-28 | Clarke Teresa Hillary | Director | Buy | 44 | $177.08 | $8K | 6K |
| 2026-04-28 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 556 | $178.48 | $99K | 30K |
| 2026-03-11 | Rossi Richard C | EVP & President, U.S. Tower | Tax withholding | 684 | $182.85 | $125K | 18K |
| 2026-03-11 | Font Juan | SVP, Pres. & CEO, CoreSite | Tax withholding | 928 | $182.85 | $170K | 28K |
| 2026-03-11 | Smith Rodney M | EVP, CFO & Treasurer | Tax withholding | 1K | $182.85 | $237K | 93K |
| 2026-03-11 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Tax withholding | 684 | $182.85 | $125K | 26K |
| 2026-03-11 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Tax withholding | 863 | $182.85 | $158K | 30K |
| 2026-03-11 | Noel Eugene M | EVP & Chief Operating Officer | Tax withholding | 719 | $182.85 | $131K | 35K |
| 2026-03-11 | Vondran Steven O | President and CEO | Tax withholding | 2K | $182.85 | $395K | 109K |
| 2026-03-10 | Rossi Richard C | EVP & President, U.S. Tower | Tax withholding | 2K | $186.12 | $287K | 18K |
| 2026-03-10 | Rossi Richard C | EVP & President, U.S. Tower | Grant | 6K | $0.00 | $0 | 20K |
| 2026-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Tax withholding | 2K | $186.12 | $341K | 29K |
| 2026-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Grant | 8K | $0.00 | $0 | 31K |
| 2026-03-10 | Smith Rodney M | EVP, CFO & Treasurer | Tax withholding | 12K | $186.12 | $2.3M | 94K |
| 2026-03-10 | Smith Rodney M | EVP, CFO & Treasurer | Grant | 11K | $0.00 | $0 | 106K |
| 2026-03-10 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Tax withholding | 1K | $186.12 | $255K | 27K |
| 2026-03-10 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Grant | 4K | $0.00 | $0 | 28K |
| 2026-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Tax withholding | 7K | $186.12 | $1.2M | 31K |
| 2026-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | 7K | $0.00 | $0 | 38K |
| 2026-03-10 | Noel Eugene M | EVP & Chief Operating Officer | Tax withholding | 2K | $186.12 | $465K | 35K |
| 2026-03-10 | Noel Eugene M | EVP & Chief Operating Officer | Grant | 8K | $0.00 | $0 | 38K |
| 2026-03-10 | Vondran Steven O | President and CEO | Tax withholding | 15K | $186.12 | $2.8M | 111K |
| 2026-03-10 | Vondran Steven O | President and CEO | Grant | 21K | $0.00 | $0 | 126K |
| 2026-03-10 | Chambliss Kelly C | Director | Grant | 1K | $0.00 | $0 | 4K |
| 2026-03-10 | MACNAB CRAIG | Director | Grant | 1K | $0.00 | $0 | 15K |
| 2026-03-10 | Kalathur Rajesh | Director | Buy | 3K | $185.30 | $495K | 5K |
| 2026-03-10 | Kalathur Rajesh | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-03-10 | HORMATS ROBERT D | Director | Grant | 1K | $0.00 | $0 | 10K |
| 2026-03-10 | Clarke Teresa Hillary | Director | Grant | 1K | $0.00 | $0 | 5K |
| 2026-03-10 | REEVE PAMELA D A | Director | Grant | 1K | $0.00 | $0 | 22K |
| 2026-03-10 | Ray Neville R | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-03-10 | REILLY EUGENE F | Director | Grant | 1K | $0.00 | $0 | 7K |
| 2026-03-10 | Tanner Bruce L | Director | Grant | 1K | $0.00 | $0 | 7K |
| 2026-03-10 | Lieblein Grace | Director | Grant | 1K | $0.00 | $0 | 9K |
| 2026-03-10 | Frank Kenneth R | Director | Grant | 1K | $0.00 | $0 | 6K |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | 2K | $189.82 | $337K | 105K |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | 17K | $188.82 | $3.1M | 107K |
| 2026-03-04 | Vondran Steven O | President and CEO | Sell | 15K | $187.90 | $2.8M | 124K |
| 2026-03-04 | Vondran Steven O | President and CEO | Exercise or conversion | 33K | $94.71 | $3.2M | 139K |
| 2026-03-04 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 682 | $188.51 | $129K | 31K |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | 7K | $192.03 | $1.3M | 30K |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | 22K | $191.40 | $4.1M | 37K |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | 7K | $190.29 | $1.4M | 58K |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Sell | 5K | $189.36 | $993K | 66K |
| 2026-03-02 | Noel Eugene M | EVP & Chief Operating Officer | Exercise or conversion | 41K | $94.71 | $3.9M | 71K |
| 2026-02-27 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Sell | 656 | $186.16 | $122K | 32K |
| 2026-02-27 | Meyer Robert Joseph | SVP & Chief Accounting Officer | Sell | 4K | $186.73 | $832K | 24K |
| 2026-02-25 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | 11K | $0.00 | $0 | 32K |
| 2026-02-25 | Smith Rodney M | EVP, CFO & Treasurer | Grant | 21K | $0.00 | $0 | 96K |
| 2026-02-25 | Vondran Steven O | President and CEO | Grant | 25K | $0.00 | $0 | 105K |
| 2026-02-17 | Smith Rodney M | EVP, CFO & Treasurer | Sell | 1 | $193.13 | $193 | 74K |
| 2026-02-17 | Smith Rodney M | EVP, CFO & Treasurer | Sell | 23K | $192.49 | $4.4M | 74K |
| 2026-02-17 | Smith Rodney M | EVP, CFO & Treasurer | Sell | 10K | $191.52 | $1.8M | 97K |
| 2026-02-17 | Smith Rodney M | EVP, CFO & Treasurer | Sell | 2K | $190.35 | $397K | 107K |
| 2026-02-17 | Smith Rodney M | EVP, CFO & Treasurer | Exercise or conversion | 34K | $94.71 | $3.3M | 109K |
| 2026-02-02 | Clarke Teresa Hillary | Director | Buy | 31 | $178.04 | $5K | 6K |
| 2026-01-03 | Font Juan | SVP, Pres. & CEO, CoreSite | Tax withholding | 419 | $174.80 | $73K | 23K |
| 2025-10-31 | REILLY EUGENE F | Director | Buy | 6K | $178.99 | $994K | 6K |
| 2025-10-20 | Clarke Teresa Hillary | Director | Buy | 29 | $189.12 | $5K | 5K |
| 2025-10-01 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Tax withholding | 55 | $193.32 | $11K | 21K |
| 2025-07-31 | Font Juan | SVP, Pres. & CEO, CoreSite | Sell | 720 | $208.33 | $150K | 23K |
| 2025-07-11 | Clarke Teresa Hillary | Director | Buy | 24 | $223.23 | $5K | 5K |
| 2025-06-01 | Meyer Robert Joseph JR | SVP & Chief Accounting Officer | Tax withholding | 162 | $214.65 | $35K | 29K |
| 2025-04-28 | Clarke Teresa Hillary | Director | Buy | 25 | $209.33 | $5K | 5K |
| 2025-03-17 | Goel Sanjay | EVP & President, Asia-Pacific | Sell | 4K | $215.92 | $864K | 25K |
| 2025-03-11 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Tax withholding | 905 | $209.78 | $190K | 21K |
| 2025-03-11 | Font Juan | SVP, Pres. & CEO, CoreSite | Tax withholding | 981 | $209.78 | $206K | 24K |
| 2025-03-11 | Meyer Robert Joseph JR | SVP & Chief Accounting Officer | Tax withholding | 717 | $209.78 | $150K | 29K |
| 2025-03-11 | Noel Eugene M | EVP & Chief Operating Officer | Tax withholding | 755 | $209.78 | $158K | 29K |
| 2025-03-11 | Puech Olivier | EVP & President, International | Tax withholding | 1K | $209.78 | $254K | 38K |
| 2025-03-11 | Vondran Steven O | President and CEO | Tax withholding | 2K | $209.78 | $475K | 81K |
| 2025-03-11 | Rossi Richard C | EVP & President, U.S. Tower | Tax withholding | 717 | $209.78 | $150K | 13K |
| 2025-03-11 | Smith Rodney M | EVP, CFO & Treasurer | Tax withholding | 1K | $209.78 | $285K | 74K |
| 2025-03-10 | Frank Kenneth R | Director | Grant | 1K | $0.00 | $0 | 5K |
| 2025-03-10 | Tanner Bruce L | Director | Grant | 1K | $0.00 | $0 | 6K |
| 2025-03-10 | Lieblein Grace | Director | Grant | 1K | $0.00 | $0 | 8K |
| 2025-03-10 | HORMATS ROBERT D | Director | Grant | 1K | $0.00 | $0 | 8K |
| 2025-03-10 | Chambliss Kelly C | Director | Grant | 1K | $0.00 | $0 | 3K |
| 2025-03-10 | Clarke Teresa Hillary | Director | Grant | 1K | $0.00 | $0 | 4K |
| 2025-03-10 | Ray Neville R | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2025-03-10 | MACNAB CRAIG | Director | Grant | 1K | $0.00 | $0 | 14K |
| 2025-03-10 | Kalathur Rajesh | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2025-03-10 | REED JOANN A | Director | Grant | 1K | $0.00 | $0 | 63K |
| 2025-03-10 | REEVE PAMELA D A | Director | Grant | 1K | $0.00 | $0 | 21K |
| 2025-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Tax withholding | 1K | $213.07 | $301K | 22K |
| 2025-03-10 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | Grant | 6K | $0.00 | $0 | 24K |
| 2025-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Tax withholding | 874 | $213.07 | $186K | 25K |
| 2025-03-10 | Font Juan | SVP, Pres. & CEO, CoreSite | Grant | 7K | $0.00 | $0 | 26K |
| 2025-03-10 | Meyer Robert Joseph JR | SVP & Chief Accounting Officer | Grant | 5K | $0.00 | $0 | 31K |
| 2025-03-10 | Meyer Robert Joseph JR | SVP & Chief Accounting Officer | Tax withholding | 1K | $213.07 | $262K | 30K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON9 Form 144 notices on file for AMT worth $26.8M at the prices reported; 1 in the last 90 days worth $290K. Latest: RUTH T DOWLING filed on 2026-10-28 to sell 1,578 shares ($290K) from 2026-10-28.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-28 | RUTH T DOWLINGOfficer | 2K | $290K | 0.000% | 2026-10-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-29 | ROBERT MEYEROfficer | 5K | $894K | 0.001% | 2026-07-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-28 | RUTH T DOWLINGOfficer | 2K | $299K | 0.000% | 2026-07-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-04 | STEVEN O VONDRANOfficer, Director | 33K | $6.3M | 0.007% | 2026-03-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-02 | EUGENE NOELOfficer | 41K | $7.9M | 0.009% | 2026-03-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-27 | RUTH T DOWLINGOfficer | 2K | $427K | 0.000% | 2026-02-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-27 | ROBERT MEYEROfficer | 4K | $832K | 0.001% | 2026-02-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-25 | Olivier Puech TrustEVP Latin America | 18K | $3.2M | 0.004% | 2026-02-25 | UBS Financial Services Inc |
| 2026-02-17 | RODNEY SMITHOfficer | 34K | $6.6M | 0.007% | 2026-02-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON2 holders report 5% or more of AMT in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 7.6% of the class (35,245,879 shares), filed 2026-04-29 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 35.2M | 7.6% | 2026-03-31 |
| 2026-04-28 | 13G | Vanguard Portfolio Managementinvestment adviser | 27.7M | 5.9% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 11 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding AMT at their latest 13F. JSON8 of the 30 tracked managers held AMT at their latest 13F, $1.50B in total at quarter-end prices. AQR Capital Management is the largest at $402.4M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 5 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 2.5M | $402.4M | 0.14% | +1.9M |
| Millennium Management | 2026-06-30 | 2.2M | $358.3M | 0.13% | +1.2M |
| Citadel Advisors | 2026-06-30 | 1.4M | $224.3M | 0.03% | +495K |
| D. E. Shaw & Co. | 2026-06-30 | 1.0M | $168.2M | 0.08% | -103K |
| Point72 Asset Management | 2026-06-30 | 854K | $139.6M | 0.15% | -352K |
| Fisher Asset Management | 2026-06-30 | 829K | $135.5M | 0.04% | -908K |
| Two Sigma Investments | 2026-06-30 | 432K | $70.6M | 0.05% | -795K |
| Bridgewater Associates | 2026-06-30 | 36K | $5.9M | 0.02% | -21K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) American Tower reported revenue of $211.1M, down 13.4% from the same quarter a year earlier (1.86 diluted EPS). In FY 2025 it generated $5.46B of operating cash flow and spent $364.6M on buybacks and $3.18B on dividends.
- Cash
- $1.76B
- Equity
- $3.72B
- Total assets
- $63.30B
- Shares outstanding
- 465,960,048
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $211.1M | n/a | n/a | 1.86 |
| Q1 FY 2026 | 2026-03-31 | $216.1M | n/a | n/a | 1.84 |
| Q4 FY 2025derived | 2025-12-31 | $219.8M | n/a | n/a | n/a |
| Q3 FY 2025 | 2025-09-30 | $246.4M | n/a | n/a | 1.82 |
| Q2 FY 2025 | 2025-06-30 | $243.7M | n/a | n/a | 0.78 |
| Q1 FY 2025 | 2025-03-31 | $226.0M | n/a | n/a | 1.04 |
| Q4 FY 2024 | 2024-12-31 | $2.55B | n/a | n/a | 2.62 |
| Q3 FY 2024 | 2024-09-30 | $190.4M | n/a | n/a | -1.69 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $935.9M | n/a | $5.46B | $1.68B | $364.6M | $3.18B |
| FY 2024 | 2024-12-31 | $774.6M | n/a | $5.29B | $1.59B | $0 | $3.03B |
| FY 2023 | 2023-12-31 | $747.3M | n/a | $4.72B | $1.80B | $0 | $3.01B |
| FY 2022 | 2022-12-31 | $840.7M | n/a | $3.70B | $1.87B | $18.8M | $2.72B |
| FY 2021 | 2021-12-31 | $717.2M | n/a | $4.82B | $1.38B | $0 | $2.27B |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-21 from the cover page.
What this page is
American Tower in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows American Tower (AMT), SEC CIK 1053507, listed on NYSE, classified by the SEC as real estate investment trusts. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-29.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-10-28.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-04-29.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-27.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-20.JSON and CSV
- Company record
- EDGAR filing index for CIK 1053507Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as real estate investment trusts
Other company pages
Datasets
Frequently Asked Questions
How much of AMT is sold short?
6,778,966 shares were held short at the 2026-10-15 settlement, 2.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is AMT's daily short volume?
On 2026-10-28, 692,978 of the 1,678,920 AMT shares reported to FINRA were sold short, 41.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does AMT have fails to deliver?
The SEC's latest file shows 104 AMT shares failed to deliver at settlement 2026-09-29. Fails are reported per settlement date and published twice a month with a lag.
Are AMT insiders buying or selling?
Insiders at AMT reported 2 open-market buys worth $509K in the last 90 days and no open-market sells. Latest filing: Clarke Teresa Hillary (Director) on 2026-10-20.
Have AMT insiders filed to sell?
9 Form 144 notices on file for AMT worth $26.8M at the prices reported; 1 in the last 90 days worth $290K. Latest: RUTH T DOWLING filed on 2026-10-28 to sell 1,578 shares ($290K) from 2026-10-28.
Who owns 5% or more of AMT?
2 holders report 5% or more of AMT in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Capital Management at 7.6% of the class (35,245,879 shares), filed 2026-04-29 for an event on 2026-03-31.
What did AMT report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) American Tower reported revenue of $211.1M, down 13.4% from the same quarter a year earlier (1.86 diluted EPS). In FY 2025 it generated $5.46B of operating cash flow and spent $364.6M on buybacks and $3.18B on dividends.
Which tracked 13F managers own AMT?
8 of the 30 tracked 13F managers held AMT shares at their latest filing, $1.50B in all. The largest: Cliff Asness's AQR Capital Management (2.5M shares, $402.4M), Izzy Englander's Millennium Management (2.2M shares, $358.3M), Ken Griffin's Citadel Advisors (1.4M shares, $224.3M), D. E. Shaw & Co. (1.0M shares, $168.2M), Steve Cohen's Point72 Asset Management (854K shares, $139.6M), Ken Fisher's Fisher Asset Management (829K shares, $135.5M). The table above lists all 8.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.