American Tower Corporation (REIT) AMT

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American Tower Corporation (REIT) Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 232.35 → 166.06 · -28.5%
232.350197.230162.110 1,2 3 4 5,6 7 8 9 10 11,12 13 14,15 16 17 18 19 20 21,22 23 24 25 26,27 28,29,30 31 32,33 34 35 36 37 38 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
163.7400 166.8200 163.4800 166.0600 2,702,101
165.3100 166.6100 163.0700 163.3900 2,758,700
168.2300 169.7700 166.3600 167.0600 2,570,600
Weekend
Weekend
171.9400 172.6800 168.9000 170.0600 2,849,600
169.7800 170.1000 167.5600 168.9200 2,375,400
168.2000 171.3000 167.7800 168.6300 2,072,300
169.0000 169.3900 166.7000 168.8300 2,200,500
170.0000 170.9000 168.9700 169.5000 2,135,300
Weekend
Weekend
166.5000 168.9300 166.1800 168.5900 2,458,200
164.0800 166.0700 163.6600 165.0000 3,132,600
165.6000 166.7300 163.8400 165.0400 3,625,700
164.2300 166.4200 163.9300 165.2500 2,737,000
165.0000 165.7900 160.0600 162.1100 3,989,400
Weekend
Weekend
No trading
167.1600 169.7000 165.4400 166.0300 3,857,600
163.5300 168.1500 162.2700 166.0800 4,626,500
167.6900 168.6000 162.4000 163.5700 5,368,900
174.9400 175.8200 167.6400 168.6700 3,600,300
Weekend
Weekend
172.3700 176.6100 171.1400 175.5900 7,260,600
175.2300 175.2900 167.2400 168.7200 3,382,100
179.9000 180.4700 173.3400 174.4600 4,636,500
178.4900 179.7500 175.9900 179.3800 3,507,900
175.7300 178.4300 173.9900 176.4300 3,031,800
Weekend
Weekend
No trading
181.6400 181.9000 175.0000 176.0500 4,453,100
182.6400 183.8500 180.7900 181.0900 2,007,900
186.4900 187.3600 183.4700 184.4700 2,682,000
186.1200 188.0200 183.6900 185.7600 3,906,300
Weekend
Weekend
187.7300 190.1400 186.7900 187.1800 2,985,700
192.1000 192.9400 188.0500 189.3100 3,337,500
192.2900 192.9400 188.5900 192.5000 2,179,000
189.1600 193.9300 188.7300 190.8300 2,665,700
193.0000 193.4800 188.8800 189.1000 2,800,200
Weekend
Weekend
193.9800 196.0800 193.0200 194.1200 3,060,800
38 · 8-K After-hours · 16:39 ET 8-K ↗
187.2000 194.9700 185.0500 193.9100 4,071,300
184.2200 188.5900 181.4700 182.2400 5,585,700
37 · 8-K After-hours · 16:18 ET 8-K ↗
187.3200 187.3700 183.0700 185.5300 2,610,600
184.8200 187.9000 184.0100 187.5300 2,479,200
Weekend
Weekend
186.9300 187.6000 185.0000 186.9600 4,326,800
185.5600 188.3000 184.0100 186.6800 2,411,200
185.2800 188.5900 184.7100 184.9800 2,741,200
36 · 8-K Pre-market · 08:00 ET 8-K ↗
183.7900 186.9900 182.9700 184.9500 2,795,400
No trading
Weekend
Weekend
185.0200 185.0600 181.6200 183.8500 2,069,900
35 · 8-K After-hours · 16:17 ET 8-K ↗
183.2000 184.8400 181.9900 183.7800 2,929,200
34 · 424B2 After-hours · 16:11 ET 424B2 ↗
181.9600 184.0200 180.6600 184.0200 2,812,700
32 · 8-K After-hours · 16:14 ET 8-K ↗
178.8100 184.1200 177.7000 183.0000 4,659,700
33 · 424B5 Pre-market · 06:02 ET 424B5 ↗
170.8900 177.7800 170.6300 177.2800 3,242,300
Weekend
Weekend
170.1800 172.3500 167.3700 170.6300 4,632,900
174.6300 175.3000 170.1900 170.5000 2,922,200
176.7700 176.8100 171.0100 173.8700 3,271,000
174.5900 180.5100 174.5300 178.8200 3,384,000
177.0500 178.9900 176.1500 177.4700 2,456,400
Weekend
Weekend
179.8300 179.8300 176.1100 176.5300 3,510,200
31 · 8-K After-hours · 16:38 ET 8-K ↗
179.5000 180.9700 178.4300 179.7700 2,589,500
179.1500 181.2500 178.4100 180.1600 2,116,000
180.0000 180.6800 176.7100 178.1200 2,244,200
180.6700 182.6300 179.2300 180.8800 1,625,500
Weekend
Weekend
183.7700 184.1100 180.8700 181.6100 1,943,200
177.9900 182.9800 177.0700 182.7100 3,006,400
177.5400 179.2200 176.5900 178.1900 2,775,000
30 · DEFA14A After-hours · 16:13 ET DEFA14A ↗ 29 · 10-Q After-hours · 16:11 ET 10-Q ↗
176.5000 180.1800 174.2900 178.4000 4,484,600
28 · 8-K Pre-market · 07:04 ET 8-K ↗
178.6400 178.9000 174.7000 175.3000 3,046,500
Weekend
Weekend
178.8900 179.6200 176.2600 178.2100 3,065,000
177.5500 179.2100 176.3800 179.0100 2,433,900
176.9300 178.1900 174.8200 176.3100 2,269,500
181.7400 181.8800 174.3100 174.7600 3,564,000
181.3700 183.4300 180.5000 181.6600 2,778,700
Weekend
Weekend
178.2900 183.0700 177.4100 182.3600 4,708,600
177.1700 178.6400 176.5800 178.6000 1,915,900
177.7700 178.7000 176.2200 176.9900 2,129,100
178.4400 178.8400 173.0000 176.4100 2,887,200
179.4800 181.2100 178.4800 180.9400 2,597,700
Weekend
Weekend
180.5500 181.5800 178.3100 179.2900 3,179,700
175.2400 182.3600 175.2400 179.9300 3,273,800
175.0000 177.2000 173.7300 176.1800 3,465,200
27 · DEFA14A Pre-market · 08:35 ET DEFA14A ↗ 26 · DEF 14A Pre-market · 08:32 ET DEF 14A ↗
175.8200 176.3800 172.8900 174.0800 3,617,100
172.7400 177.2300 171.7200 176.1400 2,898,900
Weekend
Weekend
No trading
171.4900 176.4700 170.3400 173.7300 4,241,600
172.6700 173.9100 169.7900 171.0200 2,311,000
172.6300 173.1100 170.4800 172.5800 4,425,800
171.5400 173.0300 169.7800 170.3600 3,106,500
Weekend
Weekend
168.7900 171.6600 167.9700 169.5200 2,468,500
167.2900 169.0700 165.7500 168.9200 2,890,300
169.4800 171.9900 165.0800 167.2700 4,107,600
175.4900 176.3800 170.1000 170.3600 4,558,300
179.2000 179.6300 173.1500 176.5000 4,363,100
Weekend
Weekend
184.0200 185.7200 175.6000 176.7900 6,368,000
180.2900 183.0700 178.3500 182.7600 3,615,200
183.1400 184.2000 180.2000 180.6900 3,654,800
185.6000 187.8400 184.1400 185.0700 2,728,900
185.7300 186.2100 184.1500 184.7100 2,267,300
Weekend
Weekend
182.1000 184.5400 181.0100 184.4100 3,194,200
181.0600 184.1800 179.6000 179.8600 3,070,400
185.6100 185.6100 182.4900 182.8500 1,587,900
25 · 8-K After-hours · 16:24 ET 8-K ↗
186.5000 187.9900 184.5300 186.1200 3,288,700
188.2300 189.5300 185.3000 186.6400 2,800,900
Weekend
Weekend
187.8900 190.1500 185.8600 188.5900 2,747,300
24 · 8-K After-hours · 16:22 ET 8-K ↗
189.0000 189.0300 185.0300 187.6400 3,430,400
188.5100 190.9900 187.2200 190.8000 2,457,200
187.5300 191.1800 186.2500 190.2500 2,361,100
190.0200 192.2400 188.5400 190.2000 3,390,200
Weekend
Weekend
23 · 8-K After-hours · 16:16 ET 8-K ↗
186.1600 191.9700 184.6800 191.8600 4,964,400
183.1700 187.3900 181.1800 185.0100 2,918,200
191.6000 191.6500 182.2900 182.4800 3,406,300
22 · 10-K After-hours · 16:08 ET 10-K ↗
188.1500 195.4500 187.0300 190.1900 3,535,100
21 · 8-K Pre-market · 07:05 ET 8-K ↗
187.5000 191.4900 186.6800 190.0500 2,966,400
Weekend
Weekend
186.0000 187.4200 183.4100 187.3100 2,484,100
186.5800 188.3800 184.4000 184.7900 2,257,500
192.0700 192.1800 185.6300 186.6200 2,636,100
192.5000 193.6200 189.9300 193.0900 3,166,000
No trading
Weekend
Weekend
188.6700 192.2100 188.1000 192.1000 3,413,100
182.4700 190.3400 181.8500 188.1900 4,537,000
177.5100 180.5400 175.6000 180.4800 2,089,100
174.3500 179.6700 173.5900 178.5100 2,680,700
171.0500 174.2600 169.3200 173.7100 2,507,800
Weekend
Weekend
172.7700 173.6000 168.6800 171.2700 3,481,800
172.5800 173.7200 169.3000 171.4900 4,730,000
174.1300 177.9200 172.3800 176.5500 4,518,900
173.0400 174.2300 171.4400 173.1300 3,147,200
178.9800 179.8200 173.5900 173.7000 2,968,500
Weekend
Weekend
181.2100 181.2100 175.3000 179.2800 3,504,300
20 · 8-K After-hours · 16:19 ET 8-K ↗
177.5100 181.8900 176.8100 181.3400 3,496,100
19 · 8-K After-hours · 16:22 ET 8-K ↗
180.0700 180.8800 176.2300 177.5100 3,437,700
178.5900 181.3600 177.0800 180.0700 2,867,000
179.8200 182.6400 178.9900 179.4600 4,304,100
Weekend
Weekend
176.3800 179.7000 175.1500 178.7500 2,869,700
177.2900 181.0800 176.5200 176.9500 3,741,500
178.9900 179.6800 176.6900 178.1700 2,755,700
182.9000 183.9600 177.6300 177.7500 5,038,500
No trading
Weekend
Weekend
179.6800 184.1700 178.6500 183.5700 4,130,800
177.4500 181.8100 176.3700 181.5500 3,868,300
174.4800 180.6100 174.2600 177.4800 3,604,700
171.4000 174.1200 169.7100 173.9600 2,870,300
169.4000 172.8800 169.4000 171.5300 2,732,700
Weekend
Weekend
169.4400 170.0700 166.8800 168.5100 2,359,900
168.5700 171.3200 168.3400 170.3300 2,714,700
176.9900 177.0000 169.4000 169.4400 2,756,800
175.3800 177.8000 174.7700 175.8200 2,362,300
174.2600 176.2700 171.0400 176.2500 3,433,400
Weekend
Weekend
175.2600 175.8100 173.1700 174.8000 1,786,500
No trading
175.9200 176.7600 175.4000 175.5700 1,680,100
175.6700 176.8500 175.0000 176.7200 1,718,900
175.0700 176.5100 174.8800 175.8300 2,177,300
Weekend
Weekend
174.5000 176.7000 174.5000 176.4100 1,463,200
No trading
174.7200 175.1800 174.2900 174.8000 1,040,000
172.9500 174.5800 172.1300 174.5100 3,358,100
171.6300 173.3700 170.7700 172.5300 4,154,500
Weekend
Weekend
174.2100 174.8400 171.9500 172.4100 6,033,000
178.6000 179.3600 174.1900 174.2900 3,950,800
178.5400 180.7700 177.8000 178.4900 4,084,700
180.2700 180.9800 178.7000 179.1300 3,198,300
181.7400 181.9400 177.9100 180.2600 5,020,800
Weekend
Weekend
182.1700 183.1600 180.3200 180.7000 5,329,400
181.6600 183.2100 180.7400 181.7100 4,370,000
179.8100 182.6300 179.5500 180.2600 2,500,900
183.2000 184.6100 179.3500 179.5500 3,161,100
178.5400 183.3100 176.9000 183.2000 5,804,200
Weekend
Weekend
18 · 8-K After-hours · 16:19 ET 8-K ↗
178.8200 180.3700 178.1000 178.8600 2,998,000
17 · 8-K After-hours · 16:24 ET 8-K ↗
175.5700 179.1100 175.4000 178.8300 2,804,200
16 · 424B2 After-hours · 16:17 ET 424B2 ↗
176.0300 176.7700 174.3500 176.1800 2,693,000
14 · 8-K After-hours · 16:59 ET 8-K ↗
177.0600 177.7300 175.2000 175.8100 2,467,200
15 · 424B5 Pre-market · 09:12 ET 424B5 ↗
178.5000 179.1000 174.9100 176.2700 3,329,600
Weekend
Weekend
180.4100 182.0500 180.0200 181.2700 1,088,800
No trading
180.0200 182.3000 178.5000 181.2400 1,941,700
180.2300 182.0000 179.4700 179.7600 2,005,100
179.5800 180.3600 176.5800 179.5700 6,032,500
Weekend
Weekend
180.3700 181.9900 179.0100 179.5600 2,609,900
180.5000 180.6600 178.0100 179.1200 3,094,500
181.5400 182.3600 178.9200 180.5000 2,673,200
180.0000 182.3600 178.9400 181.5500 3,436,500
183.6900 184.7000 179.9600 180.4700 3,253,600
Weekend
Weekend
182.8500 184.4000 179.6100 183.5900 3,807,200
183.0200 184.2400 180.8500 181.1300 3,072,000
184.0000 185.3800 181.9300 183.3500 2,947,600
181.4800 184.9600 180.8100 184.7900 2,429,500
176.2400 180.9700 176.0000 179.7200 2,911,100
Weekend
Weekend
177.7500 178.4800 175.3800 177.9500 4,255,800
13 · 8-K Pre-market · 08:33 ET 8-K ↗
178.8800 182.1100 177.8500 178.0900 1,960,500
180.6000 182.0300 178.7200 179.4300 2,330,500
178.6500 180.7700 177.4400 180.3500 2,663,800
177.7500 178.0200 175.0000 176.6400 3,481,700
Weekend
Weekend
177.1300 180.0600 176.8900 178.9800 2,604,700
180.2500 182.5800 178.4700 179.4500 2,954,900
182.6700 183.9200 178.7500 179.0800 4,501,500
12 · 10-Q After-hours · 16:10 ET 10-Q ↗
185.9400 186.3400 177.4900 182.7200 6,047,500
11 · 8-K Pre-market · 07:04 ET 8-K ↗
190.0000 191.0900 188.7400 189.7300 2,979,100
Weekend
Weekend
191.3100 192.7300 189.9700 191.5200 1,721,800
191.2700 192.2200 187.4700 190.3000 2,279,900
192.0300 193.4300 190.8700 191.1900 1,535,700
192.1500 194.4000 190.8500 192.3700 1,749,500
191.9500 193.1200 190.6200 193.0800 1,782,100
Weekend
Weekend
192.0800 192.5100 188.1600 191.2900 1,981,400
190.5700 194.0800 190.2400 191.4700 3,394,700
185.9200 190.1900 185.7600 190.0300 3,353,900
183.8100 186.5200 183.1300 186.5100 4,174,900
184.3600 186.0700 182.5000 183.2000 3,242,800
Weekend
Weekend
186.7700 187.9900 184.0100 186.6800 3,154,400
186.3000 186.5100 183.9900 185.3200 2,211,000
186.7100 188.8900 183.7700 185.5900 3,329,700
186.2600 186.9900 183.9500 186.9700 2,741,700
189.4500 189.4500 185.3300 185.5700 2,968,100
Weekend
Weekend
191.0000 192.4100 189.4600 190.2100 2,863,100
190.9500 193.2100 188.8800 191.1700 2,822,300
192.2800 194.5000 192.1100 193.3200 2,960,500
192.8900 193.8000 191.1300 192.3200 3,426,900
194.5600 195.5000 192.3100 194.5500 3,314,300
Weekend
Weekend
194.3300 195.4500 193.3800 194.2700 2,608,300
194.4300 197.4100 193.1400 193.7100 3,022,700
10 · 8-K After-hours · 16:17 ET 8-K ↗
193.7400 195.5600 192.5500 192.9300 2,963,500
193.4200 194.7500 192.7200 194.2800 2,774,700
194.2900 196.5400 191.9500 193.2100 3,471,300
Weekend
Weekend
193.5500 194.6400 192.0900 193.3100 5,329,500
9 · 8-K After-hours · 16:15 ET 8-K ↗
195.2300 196.4600 192.2300 193.0300 2,368,700
194.9600 199.1300 194.4300 197.2200 3,041,900
8 · 8-K After-hours · 16:15 ET 8-K ↗
192.0000 195.1500 191.4800 194.7300 3,253,800
196.0600 196.7300 188.5500 192.5000 3,883,400
Weekend
Weekend
7 · 424B2 After-hours · 16:16 ET 424B2 ↗
195.7500 196.5500 194.5900 195.0800 3,096,400
5 · 8-K After-hours · 17:07 ET 8-K ↗
194.3200 197.0900 193.0700 196.5500 2,277,400
6 · 424B5 Pre-market · 09:03 ET 424B5 ↗
194.0100 195.7500 193.3200 193.7600 2,539,100
193.9300 194.7800 192.0000 194.6000 3,383,900
194.3800 195.4700 189.0100 193.6400 5,376,600
Weekend
Weekend
4 · 8-K After-hours · 16:10 ET 8-K ↗
197.0700 199.4000 196.2800 198.3200 4,126,100
197.9200 198.1900 193.0500 195.0900 3,523,700
201.4900 202.8000 195.2000 196.2600 3,630,500
202.6000 205.2200 198.7500 200.4900 2,601,200
No trading
Weekend
Weekend
203.0000 203.8600 201.6800 203.8500 2,618,100
203.2600 204.4400 201.7100 202.5600 2,978,200
207.7500 208.0300 203.2100 203.2700 3,083,500
209.1000 209.1000 204.5500 207.4500 3,538,700
211.0000 211.9200 209.9100 211.1200 1,238,900
3 · 8-K Pre-market · 08:05 ET 8-K ↗
Weekend
Weekend
210.9000 214.7900 210.2500 211.8800 2,343,000
208.3700 211.0000 208.3700 209.7300 1,483,300
208.4900 211.1400 207.6800 209.5000 2,217,500
203.5400 206.8300 203.2300 206.6500 1,669,400
206.6000 207.0200 202.6600 203.1300 3,227,700
Weekend
Weekend
204.1900 208.2100 203.1900 206.1200 2,640,400
203.2000 204.1900 200.7900 203.4600 2,636,900
204.8800 205.3100 202.9500 204.1500 2,717,800
206.1500 206.7800 203.2200 204.6200 1,757,100
205.9300 207.8800 204.8500 206.0800 2,339,200
Weekend
Weekend
210.3300 210.8900 205.8100 206.5100 1,727,500
208.9200 211.0700 208.0000 210.0100 2,025,800
210.5000 211.5800 208.5000 208.9000 1,634,100
212.2600 212.7900 207.7800 210.0500 1,854,800
211.3600 214.3400 211.0000 212.9800 2,804,500
Weekend
Weekend
211.4100 217.3900 211.1300 212.1000 3,232,200
207.2200 209.6000 205.7100 208.3900 2,774,000
211.5600 215.0800 207.6600 208.7400 3,693,300
2 · 10-Q After-hours · 16:10 ET 10-Q ↗
219.0000 219.0000 211.8000 214.7100 3,704,000
1 · 8-K Pre-market · 07:03 ET 8-K ↗
227.7200 229.0700 223.3500 224.2100 2,176,300
Weekend
Weekend
230.6200 231.5500 228.2500 229.8700 1,031,300
230.7200 234.3300 228.4800 231.2400 2,034,700
230.9400 232.4700 229.5900 230.1800 1,839,700
229.5900 232.5500 227.9600 232.3500 2,274,400

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.