Quantumsphere Acquisition Corp QUMS

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Quantumsphere Acquisition Corp. - Ordinary Shares · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 10.2700 · FX 1 USD = 1.288650 SGD · about SGD 13.2344 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 9.96 → 10.27 · 3.1%
10.27010.1009.930 7 8 9 10 11 12 13 14 15 Sep 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
10.2700 10.2700 10.2700 10.2700 31,900
10.2700 10.2700 10.2700 10.2700 0
10.2700 10.2700 10.2600 10.2700 116,700
10.2620 10.2620 10.2620 10.2620 200
10.2600 10.2600 10.2600 10.2600 0
Weekend
Weekend
10.2650 10.2650 10.2600 10.2600 12,700
10.2650 10.2650 10.2650 10.2650 0
10.2650 10.2650 10.2650 10.2650 0
10.2650 10.2650 10.2650 10.2650 0
10.2650 10.2650 10.2650 10.2650 200
Weekend
Weekend
10.2500 10.2500 10.2500 10.2500 25,000
10.2600 10.2600 10.2600 10.2600 15,800
10.2500 10.2500 10.2500 10.2500 0
10.2300 10.2500 10.2300 10.2500 9,300
10.2270 10.2300 10.2250 10.2300 5,000
Weekend
Weekend
No trading
10.2200 10.2200 10.2200 10.2200 300
15 · 10-K/A After-hours · 17:00 ET 10-K/A ↗
10.2200 10.2200 10.2200 10.2200 0
10.2200 10.2200 10.2200 10.2200 25,400
10.2200 10.2500 10.2200 10.2500 700
Weekend
Weekend
10.2400 10.2400 10.2400 10.2400 100
10.2300 10.2300 10.2300 10.2300 0
10.2300 10.2300 10.2300 10.2300 0
10.2300 10.2300 10.2300 10.2300 0
10.2300 10.2300 10.2300 10.2300 0
Weekend
Weekend
No trading
10.2300 10.2300 10.2300 10.2300 0
10.2400 10.2400 10.2300 10.2300 750,000
10.2300 10.2300 10.2300 10.2300 25,000
14 · 10-K After market open · 13:21 ET 10-K ↗
10.2300 10.2300 10.2200 10.2300 46,100
Weekend
Weekend
10.2100 10.2100 10.2100 10.2100 0
10.2300 10.2300 10.2100 10.2100 2,100
10.2300 10.2300 10.2000 10.2000 74,100
10.2200 10.2200 10.2200 10.2200 0
10.2300 10.2300 10.2200 10.2200 86,200
Weekend
Weekend
10.2250 10.2250 10.2250 10.2250 0
10.2200 10.2250 10.2200 10.2250 23,800
10.2100 10.2100 10.2100 10.2100 0
10.2100 10.2100 10.2100 10.2100 4,000
10.2100 10.2100 10.2100 10.2100 4,100
Weekend
Weekend
10.2000 10.2000 10.2000 10.2000 19,100
10.1900 10.1900 10.1900 10.1900 0
10.2000 10.2000 10.1900 10.1900 25,000
10.1900 10.1900 10.1900 10.1900 0
No trading
Weekend
Weekend
10.1900 10.1900 10.1900 10.1900 0
10.1900 10.1900 10.1900 10.1900 0
10.1900 10.1900 10.1900 10.1900 0
10.1900 10.1900 10.1900 10.1900 0
10.1900 10.1900 10.1900 10.1900 200
Weekend
Weekend
10.1800 10.1800 10.1800 10.1800 0
10.1800 10.1800 10.1800 10.1800 18,700
10.1700 10.1700 10.1700 10.1700 0
10.1700 10.1700 10.1700 10.1700 0
10.1700 10.1700 10.1700 10.1700 1,800
Weekend
Weekend
10.1700 10.1700 10.1700 10.1700 0
10.1600 10.1700 10.1600 10.1700 50,200
10.1550 10.1550 10.1550 10.1550 0
10.1550 10.1550 10.1550 10.1550 300
10.1600 10.1600 10.1600 10.1600 200
Weekend
Weekend
10.1600 10.1600 10.1600 10.1600 0
10.1600 10.1600 10.1600 10.1600 0
10.1600 10.1600 10.1600 10.1600 400
10.1400 10.1400 10.1400 10.1400 400
10.1600 10.1600 10.1600 10.1600 3,700
Weekend
Weekend
10.1600 10.1600 10.1600 10.1600 100
10.1500 10.1500 10.1500 10.1500 15,600
10.1500 10.1500 10.1500 10.1500 200
10.1500 10.1500 10.1500 10.1500 2,100
10.1450 10.1500 10.1450 10.1500 22,400
Weekend
Weekend
10.1400 10.1500 10.1400 10.1500 2,100
10.1400 10.1400 10.1400 10.1400 2,100
10.1350 10.1400 10.1350 10.1350 3,200
10.1300 10.1300 10.1300 10.1300 2,400
10.1300 10.1300 10.1300 10.1300 2,600
Weekend
Weekend
10.1300 10.1300 10.1300 10.1300 2,800
10.1400 10.1400 10.1300 10.1300 11,100
10.1300 10.1300 10.1300 10.1300 3,000
10.1300 10.1300 10.1300 10.1300 3,300
10.1300 10.1300 10.1300 10.1300 3,600
Weekend
Weekend
No trading
10.1200 10.1250 10.1200 10.1250 4,600
10.1200 10.1250 10.1200 10.1200 8,200
10.1100 10.1220 10.1100 10.1200 8,700
10.1200 10.1200 10.1100 10.1200 36,900
Weekend
Weekend
10.1100 10.1100 10.1100 10.1100 5,500
10.1100 10.1100 10.1100 10.1100 4,300
10.1000 10.1100 10.1000 10.1100 48,900
10.1000 10.1000 10.1000 10.1000 9,000
10.1000 10.1000 10.1000 10.1000 13,600
Weekend
Weekend
10.1000 10.1000 10.1000 10.1000 5,300
10.1000 10.1000 10.1000 10.1000 6,000
10.1050 10.1050 10.1000 10.1000 6,100
10.1000 10.1100 10.1000 10.1050 6,400
10.1100 10.1250 10.1100 10.1200 44,700
Weekend
Weekend
10.1100 10.1200 10.1100 10.1100 57,100
10.0900 10.1000 10.0900 10.1000 11,500
13 · 8-K After market open · 13:56 ET 8-K ↗
10.0900 10.0900 10.0900 10.0900 2,900
10.0900 10.0900 10.0900 10.0900 3,100
10.0900 10.0900 10.0800 10.0800 6,300
Weekend
Weekend
10.0800 10.0800 10.0800 10.0800 3,700
10.0700 10.1000 10.0700 10.1000 4,300
10.0750 10.0800 10.0700 10.0800 35,900
10.0600 10.0800 10.0600 10.0700 3,700
10.0600 10.0800 10.0600 10.0800 11,000
Weekend
Weekend
10.0600 10.0600 10.0600 10.0600 3,900
10.0600 10.0700 10.0600 10.0700 6,300
10.0600 10.0700 10.0600 10.0700 10,300
10.0600 10.0700 10.0600 10.0700 21,700
10.0600 10.0600 10.0600 10.0600 6,500
Weekend
Weekend
10.0700 10.0700 10.0700 10.0700 4,800
12 · 10-Q Next filing day · accepted 19 Feb, 21:58 ET 10-Q ↗
10.0600 10.0700 10.0600 10.0700 7,200
10.0600 10.0600 10.0600 10.0600 5,600
10.0700 10.0700 10.0700 10.0700 54,700
No trading
Weekend
Weekend
10.0700 10.0700 10.0700 10.0700 5,100
10.0600 10.0730 10.0500 10.0730 54,200
10.0600 10.0600 10.0600 10.0600 4,400
10.1500 10.1500 10.0600 10.0600 5,300
10.1500 10.1500 10.0600 10.0600 5,900
Weekend
Weekend
10.1500 10.1500 10.0600 10.0600 9,500
10.1500 10.1500 10.0500 10.0500 7,200
10.1300 10.1300 10.0600 10.0800 110,000
10.0750 10.1000 10.0700 10.0900 81,900
10.0700 10.0800 10.0700 10.0800 1,700
Weekend
Weekend
10.0700 10.1000 10.0700 10.0900 2,200
10.0600 10.1000 10.0500 10.0900 10,200
10.0600 10.1000 10.0500 10.1000 1,900
10.0500 10.0900 10.0500 10.0900 2,000
10.0300 10.0300 10.0300 10.0300 0
Weekend
Weekend
11 · 8-K After-hours · 16:05 ET 8-K ↗
10.0400 10.0400 10.0300 10.0300 2,300
10.0300 10.0800 10.0300 10.0800 25,100
10.0300 10.0300 10.0300 10.0300 0
10.0200 10.0300 10.0200 10.0300 2,300
No trading
Weekend
Weekend
10.0200 10.0200 10.0200 10.0200 0
10.0200 10.0200 10.0200 10.0200 0
10.0200 10.0200 10.0200 10.0200 0
10.0200 10.0200 10.0200 10.0200 10,000
10.0100 10.0100 10.0100 10.0100 3,300
Weekend
Weekend
10.0100 10.0100 10.0100 10.0100 0
10.0100 10.0100 10.0100 10.0100 15,000
10.0100 10.0100 10.0000 10.0000 3,900
10.0200 10.0200 10.0200 10.0200 0
10.0200 10.0200 10.0200 10.0200 50,000
Weekend
Weekend
10.0100 10.0100 10.0100 10.0100 0
No trading
10.0100 10.0100 10.0100 10.0100 800
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 7,300
Weekend
Weekend
10.0000 10.0000 10.0000 10.0000 0
No trading
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 0
Weekend
Weekend
10.0000 10.0000 10.0000 10.0000 4,000
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 199,900
10.0000 10.0000 10.0000 10.0000 0
Weekend
Weekend
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 50,000
9.9800 9.9800 9.9800 9.9800 0
9.9800 9.9800 9.9800 9.9800 0
9.9800 9.9800 9.9800 9.9800 100
Weekend
Weekend
10.0000 10.0000 10.0000 10.0000 0
10.0000 10.0000 10.0000 10.0000 100,000
9.9900 9.9900 9.9900 9.9900 0
9.9900 9.9900 9.9900 9.9900 200
9.9900 9.9900 9.9900 9.9900 0
Weekend
Weekend
9.9900 9.9900 9.9900 9.9900 0
No trading
9.9900 9.9900 9.9900 9.9900 0
9.9900 9.9900 9.9900 9.9900 100,000
9.9900 9.9900 9.9900 9.9900 100,000
Weekend
Weekend
9.9900 9.9900 9.9900 9.9900 0
9.9900 9.9900 9.9900 9.9900 0
9.9900 9.9900 9.9900 9.9900 0
9.9900 9.9900 9.9900 9.9900 0
9.9800 9.9900 9.9800 9.9900 49,700
Weekend
Weekend
10 · 10-Q After-hours · 16:06 ET 10-Q ↗
9.9750 9.9750 9.9750 9.9750 0
9.9750 9.9750 9.9750 9.9750 0
9.9750 9.9750 9.9750 9.9750 0
9.9750 9.9750 9.9750 9.9750 0
9.9750 9.9750 9.9750 9.9750 0
Weekend
Weekend
9.9750 9.9750 9.9750 9.9750 0
9.9800 9.9800 9.9700 9.9750 110,900
9.9700 9.9700 9.9700 9.9700 0
9.9700 9.9700 9.9700 9.9700 0
9.9700 9.9700 9.9700 9.9700 13,300
Weekend
Weekend
9.9700 9.9700 9.9700 9.9700 0
9.9800 9.9800 9.9700 9.9700 1,200
9.9700 9.9800 9.9700 9.9800 100,000
9.9700 9.9700 9.9700 9.9700 50,300
9.9800 9.9800 9.9700 9.9700 143,600
Weekend
Weekend
9.9750 9.9750 9.9700 9.9700 500
9.9800 9.9800 9.9700 9.9800 4,500
9.9800 9.9800 9.9750 9.9750 2,800
9.9900 9.9900 9.9700 9.9700 200
10.0000 10.0000 9.9600 9.9700 5,800
Weekend
Weekend
9.9800 9.9900 9.9800 9.9800 24,300
9.9700 9.9800 9.9700 9.9800 188,900
10.0000 10.0000 9.9650 9.9700 108,300
9.9800 9.9800 9.9500 9.9750 413,300
9.9500 9.9750 9.9500 9.9750 37,300
Weekend
Weekend
9 · 8-K/A After market open · 15:21 ET 8-K/A ↗
9.9600 9.9900 9.9600 9.9800 11,300
10.2300 10.2300 9.9400 9.9700 6,300
9.9500 9.9600 9.9450 9.9500 202,600
9.9500 9.9500 9.9400 9.9500 1,700
9.9400 9.9490 9.9400 9.9400 164,600
8 · 8-K Next filing day · accepted 03 Oct, 20:30 ET 8-K ↗
Weekend
Weekend
9.9500 9.9500 9.9300 9.9400 522,700
9.9390 9.9450 9.9200 9.9300 718,100
9.9500 9.9500 9.9400 9.9400 510,100
9.9950 9.9950 9.9500 9.9600 16,600
No trading
7 · 8-K Next filing day · accepted 26 Sep, 20:12 ET 8-K ↗
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
6 · 10-Q Next filing day · accepted 18 Sep, 18:14 ET 10-Q ↗
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
5 · 8-K Next filing day · accepted 13 Aug, 20:41 ET 8-K ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
4 · 8-K After-hours · 16:30 ET 8-K ↗ 3 · 424B4 After market open · 09:39 ET 424B4 ↗
No trading
2 · S-1MEF After market open · 11:29 ET S-1MEF ↗
No trading
No trading
No trading
Weekend
Weekend
No trading
No trading
No trading
1 · S-1/A Next filing day · accepted 29 Jul, 21:56 ET S-1/A ↗
No trading
No trading
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.

15 10-K/A 10-K/A (opens SEC filing in a new tab) After-hours · 17:00 ET Summarise
14 10-K 10-K (opens SEC filing in a new tab) After market open · 13:21 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After market open · 13:56 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 19 Feb, 21:58 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
10 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
9 8-K/A 8-K/A (opens SEC filing in a new tab) After market open · 15:21 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 03 Oct, 20:30 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 26 Sep, 20:12 ET Summarise
6 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 18 Sep, 18:14 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Next filing day · accepted 13 Aug, 20:41 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:30 ET Summarise
3 424B4 424B4 (opens SEC filing in a new tab) After market open · 09:39 ET Summarise
2 S-1MEF S-1MEF (opens SEC filing in a new tab) After market open · 11:29 ET Summarise
1 S-1/A S-1/A (opens SEC filing in a new tab) Next filing day · accepted 29 Jul, 21:56 ET Summarise