ACI Worldwide Inc. (ACIW)
Showing Closing Date Range from Sep 30 to Oct 28, 2026 compared to Sep 1 to Sep 29, 2026.
Compare Last 28 Days with Previous Period
Investor Relations:aciworldwide.com/investor
Current Period Close
$55.20
Sep 30, 2026 - Oct 28, 2026
Previous Period Close
$48.59
Sep 01, 2026 - Sep 29, 2026
Net Comparison Delta
+$6.61 (+13.60%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(21 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 28, 2026 | $55.20 | - | - | - |
| Oct 27, 2026 | $54.66 | - | - | - |
| Oct 26, 2026 | $55.68 | Sep 29, 2026 | $48.59 | +14.59% |
| Oct 23, 2026 | $55.88 | Sep 28, 2026 | $49.00 | +14.04% |
| Oct 22, 2026 | $56.19 | Sep 25, 2026 | $49.51 | +13.49% |
| Oct 21, 2026 | $53.86 | Sep 23, 2026 | $49.22 | +9.43% |
| Oct 20, 2026 | $54.54 | Sep 22, 2026 | $49.19 | +10.88% |
| Oct 19, 2026 | $52.22 | Sep 21, 2026 | $49.59 | +5.30% |
| Oct 16, 2026 | $52.80 | Sep 18, 2026 | $50.27 | +5.03% |
| Oct 15, 2026 | $52.55 | Sep 17, 2026 | $51.18 | +2.68% |
| Oct 14, 2026 | $51.07 | Sep 16, 2026 | $51.58 | -0.99% |
| Oct 13, 2026 | $51.20 | Sep 15, 2026 | $51.29 | -0.18% |
| Oct 12, 2026 | $51.06 | Sep 14, 2026 | $52.65 | -3.02% |
| Oct 09, 2026 | $50.87 | Sep 11, 2026 | $52.09 | -2.34% |
| Oct 08, 2026 | $51.07 | Sep 10, 2026 | $51.97 | -1.73% |
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