Keystone Acquisition Corp. - Class A KEYY

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Keystone Acquisition Corp. - Class A Ordinary Shares · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 9.8600 · FX 1 USD = 1.288650 SGD · about SGD 12.7061 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 9.92 → 9.86 · -0.6%
9.9209.8909.860 6 Jun 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.

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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
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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
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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
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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
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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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6 · 8-K After market open · 12:18 ET CURRENT REPORT ↗
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5 · 8-K After market open · 15:08 ET CURRENT REPORT ↗
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4 · 8-K After market open · 15:37 ET CURRENT REPORT ↗
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3 · 424B4 After-hours · 16:27 ET PROSPECTUS ↗
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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.

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