Amplitude, Inc. - Class A AMPL

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Amplitude, Inc. - Class A Common Stock · Company · Nasdaq · Technology / Software - Application

Paper trade (simulated — no real money)

Fill: USD 17.4200 · FX 1 USD = 1.277900 SGD · about SGD 22.2610 per unit

Sign in to practise with simulated trades before investing real money. 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 10.14 → 17.42 · 71.8%
17.42011.5155.610 1 2 3 4 5 6,7 8 9 10 11 12 13 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 24 Oct 2025 — 25 Oct 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.

Weekend
Weekend
17.2400 17.7200 16.7600 17.4200 2,042,094
16.5300 17.1050 16.3500 17.0700 1,896,900
15.7000 16.6000 15.6550 16.5200 2,314,900
15.3300 15.9150 15.1500 15.7000 1,508,900
14.7500 15.2800 14.7500 15.1800 1,172,100
Weekend
Weekend
15.9300 16.0900 14.6300 14.7500 1,699,100
13 · 8-K After-hours · 20:31 ET 8-K ↗
15.2500 15.9300 15.2090 15.8300 1,289,300
15.4200 15.7100 15.1850 15.2900 1,492,200
15.4600 15.9150 15.4600 15.6100 907,700
15.7500 16.1750 15.4900 15.5300 1,664,400
Weekend
Weekend
15.3800 15.8700 15.3800 15.6700 2,182,500
14.7500 15.3000 14.5710 15.2900 2,473,300
14.6000 15.2150 14.6000 14.7600 2,966,900
14.9500 15.1300 14.5500 14.7900 2,463,800
14.4600 14.9200 14.4600 14.8800 1,912,500
Weekend
Weekend
14.4400 14.6800 14.2200 14.5200 1,727,200
14.1300 14.4800 13.9000 14.3000 1,427,100
13.9700 14.4700 13.7700 13.8500 3,162,000
13.1800 13.6850 13.1000 13.6400 1,486,800
13.0400 13.4400 12.6600 13.3000 972,200
Weekend
Weekend
13.7300 13.7900 13.2400 13.3000 1,138,900
13.9000 14.3780 13.6300 13.6900 1,682,900
13.1400 13.7750 12.8420 13.7550 1,512,400
13.7100 13.7980 12.7950 13.1400 1,739,500
13.2800 13.6200 13.1000 13.4300 1,539,300
Weekend
Weekend
13.9600 13.9700 13.0900 13.2000 1,912,700
13.7490 13.8900 13.3300 13.8100 1,245,500
13.2200 13.4800 13.0100 13.4700 1,169,200
13.3300 13.8400 13.2100 13.3700 1,297,000
12.8000 13.7050 12.8000 13.6500 1,629,200
Weekend
Weekend
12.4900 12.6900 12.4150 12.5900 1,494,900
12.2200 12.5200 12.0000 12.4600 2,414,600
12.5300 12.5300 11.9500 12.3900 1,557,800
12.9100 12.9100 12.3500 12.5200 1,331,100
No trading
Weekend
Weekend
13.4400 13.5050 12.6150 13.0200 1,762,500
13.5400 13.9700 13.4500 13.5500 1,398,200
13.8200 13.9200 13.1850 13.2900 1,974,200
13.8000 14.1050 13.7000 13.8300 1,649,600
14.1700 14.3010 13.8600 14.1000 1,993,400
Weekend
Weekend
14.3000 14.7600 14.1500 14.3000 2,235,800
13.1600 14.3250 13.1600 14.2800 2,080,500
12.7900 13.0650 12.5500 12.9600 1,004,400
13.0400 13.2700 12.9150 13.1100 1,188,600
13.1900 13.5500 13.1050 13.1500 1,428,900
Weekend
Weekend
12.9200 13.3500 12.6450 13.2900 1,938,400
12.7800 13.0150 12.5100 12.9300 1,511,000
12.5700 12.8950 12.4100 12.8300 1,458,100
12.5400 12.9200 12.5200 12.5900 2,665,200
12.9200 12.9550 12.4600 12.6100 1,502,100
Weekend
Weekend
13.3200 13.5800 12.9400 13.0300 2,739,100
12.4000 13.3250 12.3100 13.3000 3,122,300
12.4200 12.6800 12.2400 12.3800 2,384,900
12.1600 12.8700 12.1600 12.6900 2,437,200
11.1200 12.2500 11.0500 12.1900 2,864,400
Weekend
Weekend
10.9900 11.3750 10.8000 11.2600 2,767,500
10.1600 10.8250 9.9000 10.7700 4,631,800
12 · 10-Q Next filing day · accepted 05 Aug, 18:12 ET 10-Q ↗ 11 · 8-K After-hours · 16:38 ET 8-K ↗
9.9800 10.0800 9.7050 10.0100 2,329,100
9.4700 9.9450 9.4500 9.8800 1,861,800
9.1600 9.6200 9.1000 9.5200 3,284,900
Weekend
Weekend
8.5000 8.9100 8.4200 8.8800 1,299,000
8.7500 8.8300 8.3550 8.6100 1,569,200
8.6800 9.2150 8.5800 8.8900 2,331,400
8.6200 8.9550 8.5100 8.7400 1,700,100
8.3300 8.8800 8.2800 8.6700 1,428,900
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
10 · 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
9 · 10-Q Next filing day · accepted 06 May, 18:46 ET 10-Q ↗ 8 · 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
7 · DEFA14A After-hours · 16:31 ET DEFA14A ↗ 6 · 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
5 · 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
4 · 10-K Next filing day · accepted 18 Feb, 21:12 ET 10-K ↗ 3 · 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
2 · 10-Q Next filing day · accepted 05 Nov, 19:17 ET 10-Q ↗ 1 · 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

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.

13 8-K 8-K (opens SEC filing in a new tab) After-hours · 20:31 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 05 Aug, 18:12 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:38 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:14 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 06 May, 18:46 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
7 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
6 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:23 ET Summarise
4 10-K 10-K (opens SEC filing in a new tab) Next filing day · accepted 18 Feb, 21:12 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:11 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 05 Nov, 19:17 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:10 ET Summarise