stockNASDAQ: ACIW • 28 Days Updates
ACI Worldwide Inc. (ACIW)
Showing Closing Date Range from Sep 11 to Oct 9, 2026.
ACI Worldwide (ACIW) provides payment systems and transaction processing software for financial institutions and merchants worldwide, trading among Nasdaq Stocks. Shares last closed at $51.07, moving +1.83% over the past week and -1.96% across 28 days. Longer term, the stock is -9.50% over 3 months, +23.84% over 6 months and -2.50% over 12 months. Comparable stocks APPS (Digital Turbine) (-8.72%), MXL (MaxLinear) (+25.65%), FIGR (Figure Technology Solutions) (-20.85%), INVA (Innoviva) (+1.02%) and AVT (Avnet) (-0.07%) moved over the same 28-day stretch, for comparison.
Investor Relations:aciworldwide.com/investor
Price & Performance Trajectory
ACI Worldwide Inc.NASDAQ: ACIW
Latest Close
$51.07
28 Days Updates Trajectory
Showing Closing Date Range from Sep 11 to Oct 9, 2026.Loading trajectory chart...
Click metric scorecards below to toggle price, return %, range & volume curvesACIW session performance
✓ Latest Close USD
$51.07
Latest session close
$-1.02vs period start
Period Return % % GAIN
-1.96%
Net period trajectory
Cumulative ReturnNormalized
High / Low Range SPREAD
$53.6 / $47.81
Period range envelope
$5.79channel spread
Total Volume SHARES
13.35M
Period turnover
Avg: 702.5K/dLiquidity
Historical Session Ledger
Daily open, high, low, and close prices with volume and period returns.
Historical Quotes & Breakdown(19 dates)
| Date | Close (USD) | Return % | High | Low | Volume |
|---|---|---|---|---|---|
| Oct 08, 2026 | $51.07 | +0.83% | $51.15 | $50.18 | 493.8K |
| Oct 07, 2026 | $50.65 | -0.12% | $50.97 | $50.25 | 562.0K |
| Oct 06, 2026 | $50.71 | -1.00% | $51.60 | $50.19 | 726.0K |
| Oct 05, 2026 | $51.22 | +2.13% | $51.65 | $50.15 | 913.8K |
| Oct 02, 2026 | $50.15 | +0.93% | $50.91 | $49.59 | 576.7K |
| Oct 01, 2026 | $49.43 | +1.13% | $50.18 | $49.28 | 36.3K |
| Sep 30, 2026 | $48.88 | +0.60% | $49.37 | $47.81 | 1.12M |
| Sep 29, 2026 | $48.59 | -0.84% | $49.20 | $48.31 | 648.0K |
| Sep 28, 2026 | $49.00 | -1.03% | $49.18 | $48.28 | 465.8K |
| Sep 25, 2026 | $49.51 | -0.22% | $49.98 | $49.44 | 585.4K |
| Sep 23, 2026 | $49.22 | +0.06% | $49.83 | $48.86 | 537.3K |
| Sep 22, 2026 | $49.19 | -0.81% | $50.78 | $48.80 | 779.8K |
| Sep 21, 2026 | $49.59 | -1.35% | $50.64 | $49.57 | 657.4K |
| Sep 18, 2026 | $50.27 | -1.78% | $51.31 | $50.00 | 1.68M |
| Sep 17, 2026 | $51.18 | -0.78% | $51.76 | $50.93 | 688.6K |
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