Keystone Acquisition Corp. - Class A KEYY

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Keystone Acquisition Corp. - Class A Ordinary Shares · Company · Nasdaq · Financial Services / Shell Companies

Paper trade (simulated — no real money)

Fill: USD 9.9100 · FX 1 USD = 1.278120 SGD · about SGD 12.6662 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 9.92 → 9.91 · -0.1%
9.9509.9009.850 6 7 Jun 26Jul 26Oct 26

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

Price & SEC Filing History 25 Oct 2025 — 26 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.

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Weekend
Weekend
9.9300 9.9300 9.9100 9.9100 1,371,700
9.9500 9.9500 9.9500 9.9500 0
9.9500 9.9500 9.9500 9.9500 0
9.9500 9.9500 9.9500 9.9500 300
9.9500 9.9500 9.9500 9.9500 0
Weekend
Weekend
9.9500 9.9500 9.9500 9.9500 300
9.9300 9.9300 9.9300 9.9300 3,300
9.9300 9.9300 9.9200 9.9300 114,500
9.9300 9.9300 9.9300 9.9300 0
9.9300 9.9300 9.9300 9.9300 79,000
Weekend
Weekend
9.9300 9.9300 9.9300 9.9300 0
9.9500 9.9500 9.9300 9.9300 95,100
9.9300 9.9300 9.9300 9.9300 0
9.9300 9.9300 9.9300 9.9300 0
9.9300 9.9300 9.9300 9.9300 8,200
Weekend
Weekend
9.9500 9.9500 9.9500 9.9500 200
9.9200 9.9200 9.9200 9.9200 81,000
9.9200 9.9500 9.9200 9.9500 10,700
9.9200 9.9200 9.9200 9.9200 0
9.9200 9.9200 9.9100 9.9200 1,900
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9.9100 9.9100 9.9100 9.9100 0
9.9100 9.9100 9.9100 9.9100 50,300
9.9100 9.9100 9.9100 9.9100 57,000
9.9000 9.9100 9.9000 9.9100 3,700
9.9000 9.9100 9.9000 9.9100 1,200
Weekend
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9.9200 9.9200 9.9000 9.9100 800
9.9100 9.9100 9.9100 9.9100 653,600
9.9200 9.9200 9.9200 9.9200 200
9.9100 9.9100 9.9000 9.9100 227,700
9.9200 9.9200 9.9100 9.9100 50,300
Weekend
Weekend
9.9000 9.9000 9.9000 9.9000 0
9.9100 9.9100 9.9000 9.9000 52,400
9.9100 9.9100 9.9100 9.9100 0
9.9000 9.9200 9.9000 9.9100 491,600
No trading
Weekend
Weekend
9.9200 9.9200 9.9200 9.9200 0
9.9200 9.9200 9.9200 9.9200 0
9.9000 9.9200 9.9000 9.9200 291,200
9.9000 9.9000 9.9000 9.9000 500,000
9.9200 9.9200 9.8900 9.9000 251,900
Weekend
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9.9000 9.9000 9.9000 9.9000 22,900
9.8600 9.9000 9.8600 9.9000 10,100
9.8900 9.8900 9.8900 9.8900 139,000
9.8600 9.8900 9.8600 9.8800 56,700
9.9000 9.9000 9.9000 9.9000 500
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9.8800 9.8800 9.8800 9.8800 4,600
9.8800 9.8800 9.8800 9.8800 0
9.8800 9.8800 9.8800 9.8800 0
9.8800 9.8800 9.8800 9.8800 1,800
9.8800 9.8800 9.8800 9.8800 211,500
Weekend
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9.9000 9.9000 9.8900 9.8900 600
7 · 10-Q After-hours · 16:28 ET QUARTERLY REPORT ↗
9.8800 9.8900 9.8800 9.8800 72,500
9.8800 9.8800 9.8600 9.8700 521,900
9.8500 9.8500 9.8500 9.8500 0
9.8500 9.8500 9.8500 9.8500 0
Weekend
Weekend
9.8500 9.8500 9.8500 9.8500 0
9.8800 9.8800 9.8400 9.8500 28,900
9.8700 9.8700 9.8700 9.8700 0
9.8700 9.8700 9.8700 9.8700 5,000
9.8600 9.8600 9.8600 9.8600 0
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Weekend
9.8400 9.8800 9.8400 9.8600 1,200
9.8800 9.8800 9.8800 9.8800 100
9.8700 9.8700 9.8500 9.8500 2,500
9.8600 9.8600 9.8500 9.8500 2,500
9.8600 9.8600 9.8600 9.8600 700
Weekend
Weekend
9.8500 9.8800 9.8500 9.8600 2,200
9.8700 9.8700 9.8700 9.8700 0
9.8700 9.8700 9.8700 9.8700 0
9.8700 9.8700 9.8700 9.8700 0
9.8600 9.8800 9.8500 9.8700 6,100
Weekend
Weekend
9.8600 9.8600 9.8600 9.8600 0
9.8600 9.8600 9.8600 9.8600 1,800
9.8600 9.8600 9.8600 9.8600 100
9.8600 9.8800 9.8600 9.8700 1,400
9.8700 9.8700 9.8700 9.8700 700
Weekend
Weekend
9.8700 9.8700 9.8500 9.8700 87,200
9.8400 9.9000 9.8400 9.9000 63,400
9.8600 9.8700 9.8600 9.8700 1,137,500
9.8600 9.8900 9.8600 9.8700 1,500
9.9000 9.9000 9.8700 9.8800 1,200
Weekend
Weekend
No trading
9.8600 9.8800 9.8600 9.8800 1,000
9.8600 9.8800 9.8600 9.8800 179,700
9.8600 9.8700 9.8600 9.8600 839,500
9.8800 9.8800 9.8600 9.8600 109,000
Weekend
Weekend
9.8700 9.8700 9.8600 9.8600 2,600
9.8800 9.8800 9.8600 9.8700 110,000
9.8900 9.8900 9.8700 9.8700 382,100
9.8800 9.8900 9.8800 9.8800 9,300
10.0000 10.0000 9.8800 9.9200 24,100
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No trading
6 · 8-K After market open · 12:18 ET CURRENT REPORT ↗
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No trading
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5 · 8-K After market open · 15:08 ET CURRENT REPORT ↗
No trading
No trading
4 · 8-K After market open · 15:37 ET CURRENT REPORT ↗
No trading
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3 · 424B4 After-hours · 16:27 ET PROSPECTUS ↗
No trading
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2 · S-1/A After-hours · 17:14 ET REGISTRATION STATEMENT ↗
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1 · S-1 After-hours · 17:15 ET REGISTRATION STATEMENT ↗
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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.

7 10-Q QUARTERLY REPORT (opens SEC filing in a new tab) After-hours · 16:28 ET Summarise
6 8-K CURRENT REPORT (opens SEC filing in a new tab) After market open · 12:18 ET Summarise
5 8-K CURRENT REPORT (opens SEC filing in a new tab) After market open · 15:08 ET Summarise
4 8-K CURRENT REPORT (opens SEC filing in a new tab) After market open · 15:37 ET Summarise
3 424B4 PROSPECTUS (opens SEC filing in a new tab) After-hours · 16:27 ET Summarise
2 S-1/A REGISTRATION STATEMENT (opens SEC filing in a new tab) After-hours · 17:14 ET Summarise
1 S-1 REGISTRATION STATEMENT (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise