United Microelectronics Corporation
United Microelectronics Corporation (UMC) Stock Splits
Forward and reverse split history, cumulative multiple, latest ratio, and share calculator on this tab.
FMP · UMC · as of Jun 8, 2026
Key split metrics
Latest Split Event
Forward SplitStock Split History
| Date↓ | Ratio | Type | Multiple↕ | Cumulative↕ |
|---|---|---|---|---|
| Aug 8, 2008 | 209-for-200 | Forward | ×1.04 | ×1.19 |
| Oct 9, 2007 | 17429-for-25000 | Reverse | ×0.697 | ×1.14 |
| Aug 2, 2005 | 551-for-500 | Forward | ×1.10 | ×1.64 |
| Jul 13, 2004 | 27-for-25 | Forward | ×1.08 | ×1.49 |
| Jul 15, 2003 | 10401-for-10000 | Forward | ×1.04 | ×1.38 |
| Aug 5, 2002 | 23-for-20 | Forward | ×1.15 | ×1.32 |
| Jul 13, 2001 | 23-for-20 | Forward | ×1.15 | ×1.15 |
Stock Split Calculator
If you bought 100 shares purchased of UMC on Jan 1, 2020 — — how many shares would you hold today after all splits?
This calculator shows how stock splits affected share count only. It does not reflect current market value, dividend payments, or transaction costs. Past splits do not guarantee future performance.
About stock split history & investor guide
United Microelectronics Corporation (UMC) has split its stock 7 times since its IPO, with a cumulative multiplier of ×1.19. The most recent split was a 209-for-200 forward split on Aug 8, 2008.
Frequently asked questions
United Microelectronics Corporation (UMC) has split its stock 7 times. All splits were forward splits. The cumulative multiplier is ×1.19, meaning 1 share at IPO would equal 1.19 shares today.