Amplitude, Inc. - Class A AMPL

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Amplitude, Inc. - Class A Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 8.1000 · FX 1 USD = 1.289800 SGD · about SGD 10.4474 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

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

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

USD 13.04 → 8.10 · -37.9%
13.0409.3255.610 1 2 3 4 5 6 7 8,9 10 11 12 Jul 25Oct 25Jan 26Apr 26Jul 26

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

Price & SEC Filing History 26 Jul 2025 — 27 Jul 2026 (Last year)

Daily Nasdaq 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
Weekend
Weekend
8.2200 8.2800 8.0200 8.1000 1,571,400
8.8200 8.9600 7.5150 8.0500 3,923,900
9.6800 9.6800 8.5800 8.7400 2,177,300
9.9000 10.1000 9.4350 9.5900 1,462,100
9.5700 9.9400 9.4550 9.8300 1,254,600
Weekend
Weekend
9.3700 9.6700 9.3000 9.6000 1,178,600
9.7050 9.8300 9.4600 9.6500 1,155,100
9.7800 9.9750 9.5000 9.6400 1,297,800
9.0100 9.8060 8.8620 9.6900 2,203,300
9.3200 9.6200 9.1850 9.3600 1,688,100
Weekend
Weekend
9.4400 9.6200 9.0600 9.1800 1,696,300
8.7800 9.4100 8.5000 9.3800 2,795,300
8.8500 9.0190 8.6750 8.8100 2,370,600
9.0900 9.3550 8.8100 9.1600 2,695,200
8.7050 9.2600 8.6000 8.9100 1,834,700
Weekend
Weekend
No trading
8.5000 9.0450 8.4800 8.8400 3,133,500
8.2400 9.1800 8.0900 8.5500 8,560,700
7.5050 7.6500 7.3200 7.6500 2,170,000
7.5800 7.7400 7.4600 7.5600 2,182,600
Weekend
Weekend
6.7800 7.5000 6.7800 7.4100 3,457,300
6.6700 7.0050 6.5400 6.7600 1,667,200
6.5800 7.0350 6.4990 6.8300 1,848,200
6.5500 6.7250 6.4850 6.6600 2,070,100
6.6000 6.8500 6.3000 6.4600 1,606,100
Weekend
Weekend
No trading
6.5600 6.6250 6.3300 6.5300 1,771,000
6.6400 6.8500 6.4500 6.5300 3,615,200
6.8400 6.8400 6.5050 6.6500 1,921,300
7.1100 7.1100 6.7600 6.8400 1,583,200
Weekend
Weekend
6.7700 6.9550 6.5700 6.8900 2,425,100
6.7400 6.9450 6.5500 6.8800 2,061,800
12 · 8-K After-hours · 16:14 ET 8-K ↗
6.8600 7.1500 6.8100 6.9000 1,881,100
7.1650 7.3590 6.7100 6.9600 2,528,500
7.5700 7.6010 7.0000 7.1700 3,888,600
Weekend
Weekend
7.7500 8.0500 7.6600 7.6600 2,847,800
8.2500 8.3250 7.7200 7.7500 2,661,000
8.1600 8.1700 7.9100 8.1100 2,634,700
8.3900 8.7050 8.1550 8.3400 3,659,700
8.0000 8.8700 7.9300 8.7800 4,583,000
Weekend
Weekend
7.0250 7.8700 6.9800 7.8200 5,760,800
6.9200 6.9650 6.6650 6.8800 2,238,500
6.7900 7.1750 6.7900 6.8800 2,501,500
6.6300 6.9750 6.6150 6.8400 2,743,800
No trading
Weekend
Weekend
6.5400 6.8000 6.5400 6.7000 2,026,800
6.3600 6.5400 6.3400 6.5200 2,382,200
6.3100 6.6000 6.2250 6.4900 2,502,300
6.4600 6.6550 6.2500 6.3600 2,640,200
6.0300 6.4900 6.0000 6.3500 3,115,000
Weekend
Weekend
6.1400 6.3350 6.0500 6.0600 2,922,900
6.0000 6.2750 5.9800 6.1300 2,677,500
6.1000 6.1500 5.9100 5.9800 2,518,500
6.3700 6.4950 6.1400 6.1800 3,330,900
6.3000 6.6000 6.1850 6.3600 3,408,700
Weekend
Weekend
5.7300 6.4500 5.6400 6.3900 4,387,000
6.0600 6.2600 5.6350 5.9100 8,075,100
11 · 10-Q Next filing day · accepted 06 May, 18:46 ET 10-Q ↗ 10 · 8-K After-hours · 16:52 ET 8-K ↗
7.7600 7.7700 7.4450 7.5200 3,075,000
8.0000 8.0200 7.6900 7.9500 1,634,300
7.7700 8.2800 7.7600 8.0400 1,678,200
Weekend
Weekend
7.4100 7.8200 7.3400 7.7900 1,447,300
7.0700 7.1400 6.9100 7.1100 1,102,600
6.9600 7.2200 6.8900 7.1800 1,006,600
7.0500 7.2400 7.0050 7.0600 912,700
7.0100 7.1900 6.9100 7.0300 1,380,100
Weekend
Weekend
9 · DEFA14A After-hours · 16:31 ET DEFA14A ↗ 8 · DEF 14A After-hours · 16:30 ET DEF 14A ↗
6.7400 7.0600 6.7050 7.0600 1,231,900
7.0800 7.0800 6.5100 6.7100 1,898,500
7.0900 7.3000 6.9600 7.2800 1,030,800
7.1000 7.4000 6.9900 7.0000 1,451,700
6.8800 7.1500 6.8200 7.0800 1,145,200
Weekend
Weekend
6.9600 7.1300 6.9300 6.9800 1,913,100
6.8900 7.0200 6.7050 6.7900 1,959,200
6.3000 6.7200 6.2100 6.6900 2,521,300
6.0700 6.2950 6.0000 6.2000 2,602,800
5.5900 5.9500 5.5100 5.9500 1,944,100
Weekend
Weekend
5.9400 5.9800 5.5500 5.6100 1,996,700
6.2100 6.2150 5.6800 6.0100 2,381,300
7.0200 7.0500 6.2200 6.2700 2,169,400
6.7600 6.8800 6.6250 6.7000 1,032,400
6.8400 6.9450 6.7200 6.8200 737,900
Weekend
Weekend
No trading
6.6900 6.9350 6.6300 6.8400 1,048,800
6.9000 6.9000 6.5500 6.7900 1,542,400
6.8100 7.0500 6.7500 6.8200 1,831,000
6.5700 6.8200 6.4250 6.8000 1,691,900
Weekend
Weekend
6.5700 6.5700 6.3550 6.4100 1,258,100
6.5200 6.8750 6.5200 6.7000 1,141,100
6.9500 7.0300 6.5550 6.5900 1,632,600
7.0900 7.2550 6.7300 6.7500 2,415,100
7.1300 7.2400 6.9050 7.2100 1,646,100
Weekend
Weekend
7.1950 7.2150 6.9200 7.0100 2,612,400
7.0200 7.3450 7.0200 7.2100 1,391,000
7.0200 7.2000 6.9700 7.0500 1,111,000
7.2600 7.5800 7.1150 7.1500 1,509,900
7.3600 7.4800 7.2500 7.2800 1,531,700
Weekend
Weekend
7.3800 7.4750 7.1150 7.3500 1,583,800
7.5600 7.8150 7.3500 7.4000 1,610,000
7.7100 7.8850 7.4300 7.6400 1,163,000
7.8100 7.8100 7.4100 7.7000 2,028,600
7.7100 7.9250 7.6000 7.8000 1,521,800
Weekend
Weekend
7.8500 8.0500 7.7000 7.8500 1,991,200
7.7500 8.0250 7.7050 7.8700 2,190,500
7.6200 7.8800 7.5750 7.7200 1,957,100
7.3500 7.6850 7.2800 7.5800 2,221,900
7.0500 7.6000 7.0000 7.5100 2,657,600
Weekend
Weekend
7.1500 7.3550 6.9900 7.3000 2,381,700
6.7900 7.5500 6.7800 7.3100 3,973,200
6.8350 6.8550 6.4500 6.6600 3,682,600
7 · 8-K After-hours · 16:23 ET 8-K ↗
6.4900 6.9600 6.4100 6.8300 2,329,700
6.9200 6.9450 6.4600 6.5000 4,276,000
Weekend
Weekend
7.0500 7.7350 7.0100 7.0800 4,368,800
7.2200 7.6400 6.8700 7.1600 4,521,000
6 · 10-K Next filing day · accepted 18 Feb, 21:12 ET 10-K ↗ 5 · 8-K After-hours · 16:11 ET 8-K ↗
6.3600 7.2800 6.2800 7.1800 5,002,300
6.3000 6.4150 6.0000 6.3400 3,327,900
No trading
Weekend
Weekend
6.2600 6.5300 6.2000 6.3400 3,495,000
6.7500 6.7700 5.9950 6.2100 3,668,000
7.2900 7.3550 6.5740 6.7100 3,285,000
7.4800 7.5000 7.1750 7.3100 3,238,800
7.2400 7.4050 7.0500 7.2500 3,600,400
Weekend
Weekend
7.4300 7.6500 7.0700 7.2300 2,758,300
7.8200 8.0300 7.2550 7.3100 1,689,700
8.2100 8.2400 7.6200 7.9100 2,322,200
8.9500 8.9500 7.8950 8.2200 2,363,900
9.1800 9.3250 8.9500 9.0600 1,171,000
Weekend
Weekend
9.3200 9.4600 9.1400 9.1700 1,293,300
9.7100 9.7900 9.0900 9.3700 1,415,500
10.1600 10.2700 9.8650 9.9000 1,004,700
10.5200 10.5200 9.8900 10.0300 1,481,800
10.3100 10.6100 10.2300 10.5000 792,000
Weekend
Weekend
10.4600 10.7100 10.1650 10.2500 1,183,700
9.9000 10.5450 9.8900 10.4600 1,188,000
9.8300 9.8840 9.5400 9.8100 1,763,000
9.7000 10.0300 9.6300 9.8300 2,137,900
No trading
Weekend
Weekend
10.2600 10.2600 9.9300 9.9500 1,365,600
10.8500 11.0500 10.1800 10.2200 1,818,500
10.4400 10.5450 10.0500 10.2300 904,400
10.9200 10.9200 10.1900 10.5000 1,355,400
10.8800 10.9900 10.6600 10.8800 860,200
Weekend
Weekend
11.1100 11.1930 10.7700 10.9000 1,375,300
11.5400 11.6400 11.0150 11.1300 1,313,500
11.4400 11.9400 11.4300 11.6400 1,239,100
10.9800 11.4400 10.8600 11.3700 904,500
10.9500 11.1800 10.8800 10.9900 1,125,000
Weekend
Weekend
11.7000 11.7000 10.9100 10.9300 1,034,400
No trading
11.7200 11.7700 11.5500 11.5800 723,100
11.7800 11.9700 11.7100 11.7500 500,200
11.8100 12.0000 11.7500 11.8300 665,100
Weekend
Weekend
11.8900 12.0000 11.8450 11.9300 588,200
No trading
11.5800 12.0500 11.5800 11.9400 1,205,200
11.7400 11.9300 11.3450 11.6100 1,644,000
11.4500 11.9400 11.4500 11.8600 1,309,200
Weekend
Weekend
11.8700 11.9500 11.4000 11.4500 1,619,800
11.6700 11.9800 11.5300 11.8900 1,382,600
11.1600 11.8400 11.1200 11.4900 1,641,100
10.7100 11.0450 10.6800 11.0200 1,073,600
11.3300 11.3300 10.7100 10.7500 1,100,900
Weekend
Weekend
11.3300 11.4300 11.1800 11.2500 761,600
11.4300 11.7100 11.2300 11.2900 874,000
11.2900 11.6600 11.2900 11.4700 1,144,300
11.0300 11.4550 11.0300 11.3400 726,200
11.1600 11.3750 11.0900 11.1400 894,200
Weekend
Weekend
10.9400 11.3100 10.8700 11.1600 1,214,700
10.6700 11.0950 10.6400 10.9900 1,188,600
10.4100 10.6700 10.2980 10.6400 1,044,200
10.3800 10.5800 10.3000 10.4250 775,500
10.1600 10.3800 10.1300 10.2500 825,100
Weekend
Weekend
10.1400 10.3500 9.9880 10.2800 431,500
No trading
10.2500 10.2650 10.0200 10.1200 668,400
9.9600 10.3200 9.9550 10.2200 833,200
10.0600 10.1400 9.9400 9.9800 940,300
Weekend
Weekend
9.8800 10.1500 9.6700 10.0400 1,085,600
10.0000 10.2200 9.8500 9.9300 1,819,900
9.8700 9.9270 9.3700 9.8200 1,479,100
9.9000 9.9700 9.7500 9.8700 1,475,500
10.6900 10.6900 9.9400 9.9600 1,172,400
Weekend
Weekend
10.5600 10.9500 10.5400 10.7300 1,028,500
11.1200 11.5300 10.8100 10.8300 1,950,000
11.2300 11.4200 10.8850 11.0400 1,879,700
10.6300 11.3300 10.5500 11.1800 2,607,000
10.1100 10.8300 10.0550 10.7300 2,072,800
Weekend
Weekend
9.6600 10.0700 9.6350 10.0100 1,741,100
10.0450 10.2400 9.6900 9.9100 5,313,400
4 · 10-Q Next filing day · accepted 05 Nov, 19:17 ET 10-Q ↗ 3 · 8-K After-hours · 16:10 ET 8-K ↗
9.5700 9.7050 9.4050 9.6400 1,815,900
9.7500 9.7800 9.3100 9.4800 1,462,900
10.0800 10.0800 9.6600 9.9300 4,022,600
Weekend
Weekend
10.3100 10.4900 9.9000 10.0500 4,493,600
9.6400 9.9700 9.5330 9.7500 878,100
9.9300 10.0850 9.7200 9.7400 842,000
10.0600 10.3350 10.0100 10.0200 1,211,200
10.3900 10.4000 10.0200 10.0400 1,024,400
Weekend
Weekend
10.1900 10.2800 10.0200 10.1400 1,113,800
9.8600 10.0500 9.7900 9.9800 871,400
10.1000 10.1000 9.7400 9.8600 843,100
9.9000 10.3000 9.7300 10.1300 779,600
9.7500 10.0200 9.7300 9.9100 707,600
Weekend
Weekend
9.4900 9.7400 9.4000 9.6900 1,361,800
10.1500 10.3200 9.5500 9.6000 953,900
10.3100 10.3400 10.0000 10.1000 692,700
9.8500 10.2900 9.7800 10.1500 834,800
10.1300 10.1300 9.9000 10.0600 671,400
Weekend
Weekend
10.4300 10.4300 9.8900 9.9400 1,130,400
10.2590 10.4650 10.1000 10.3600 794,800
10.1400 10.3700 10.0600 10.3000 685,600
10.3300 10.3350 9.8400 10.0700 1,440,000
10.2500 10.5200 9.9200 10.2700 1,242,300
Weekend
Weekend
10.2200 10.4000 10.1200 10.1400 916,500
10.1500 10.2200 10.0400 10.2200 1,355,700
10.6500 10.9150 9.9800 10.0300 2,205,300
11.4500 11.5050 10.6100 10.7200 1,274,100
11.4900 11.6900 11.4350 11.4500 798,200
Weekend
Weekend
11.5900 11.7300 11.3700 11.3800 1,024,100
11.5150 11.6900 11.4100 11.5900 728,800
11.8300 11.9500 11.6450 11.7400 690,600
12.3000 12.3200 11.7200 11.7400 997,600
12.0700 12.4300 11.9000 12.3000 1,091,000
Weekend
Weekend
12.0800 12.1600 11.8500 12.0700 2,474,500
11.5200 12.0170 11.5200 11.9600 1,378,700
11.0600 11.7100 11.0400 11.4500 2,762,100
10.8300 11.0650 10.6700 11.0500 1,741,200
11.2000 11.3100 10.8350 10.8700 2,008,900
Weekend
Weekend
11.3200 11.3400 10.9400 11.0700 1,190,800
11.1900 11.4100 11.1300 11.3400 1,530,300
11.5900 11.5900 10.9700 11.1900 1,402,900
11.5050 11.5300 11.0400 11.4000 2,399,200
11.5100 11.7900 11.2800 11.3300 1,954,400
Weekend
Weekend
11.1200 11.4700 11.0300 11.4300 1,782,000
11.0800 11.0900 10.6750 10.8900 1,303,600
10.7800 11.1900 10.7500 11.1600 2,138,900
11.0500 11.2900 10.7250 10.7600 2,786,100
No trading
Weekend
Weekend
11.7000 11.8400 11.3800 11.4300 1,341,600
11.4700 11.9500 11.4600 11.7200 1,441,400
11.1000 11.5000 11.1000 11.4500 1,648,300
11.1300 11.2870 10.9600 11.0400 2,202,400
11.5200 11.5500 11.1050 11.1400 1,144,800
Weekend
Weekend
10.9700 11.5950 10.9400 11.5500 2,258,900
10.7600 10.9800 10.7300 10.9300 1,680,700
11.0500 11.1400 10.5900 10.8600 1,714,900
11.6900 11.6900 11.1050 11.1500 1,432,700
11.4700 11.7300 11.4290 11.6700 1,478,100
Weekend
Weekend
11.4500 11.6300 11.3700 11.4700 1,915,000
11.4700 11.5150 11.0000 11.3600 2,667,700
11.3800 11.6700 11.1200 11.6400 2,229,800
11.2200 11.4100 11.0430 11.2300 1,627,200
11.5900 11.5900 11.1500 11.2000 1,793,000
Weekend
Weekend
12.7100 12.8000 11.3150 11.5300 3,469,000
13.8100 14.4900 11.9200 12.6000 4,769,100
2 · 10-Q Next filing day · accepted 06 Aug, 18:52 ET 10-Q ↗ 1 · 8-K After-hours · 16:09 ET 8-K ↗
12.2900 12.6360 12.0800 12.2200 1,766,500
12.0800 12.3750 11.8100 12.2300 2,272,100
11.7400 11.9950 11.6600 11.9600 1,071,800
Weekend
Weekend
11.9300 11.9300 11.3700 11.5500 1,251,900
12.8600 12.9100 12.1900 12.2300 947,300
12.8400 12.9800 12.5500 12.7200 924,500
13.1800 13.2400 12.6100 12.7800 859,700
12.7700 13.1650 12.7300 13.0400 704,100
Weekend
Weekend

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.

12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 06 May, 18:46 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
9 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
8 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:23 ET Summarise
6 10-K 10-K (opens SEC filing in a new tab) Next filing day · accepted 18 Feb, 21:12 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
4 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 05 Nov, 19:17 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 06 Aug, 18:52 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:09 ET Summarise