Aci Worldwide, Inc.
ACIW- Exchange
- Nasdaq
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0000935036
No open-market purchases or sales by Aci Worldwide, Inc. insiders were filed in the last 90 days; 377 institutions reported holding it in 13F filings for Q2 2026, worth $5.22B in total; Weitz Investment Management is the only superinvestor holding it.
Superinvestors holding ACIW, Q2 2026
1 superinvestor reports holding Aci Worldwide, Inc. on Form 13F, worth $18.5M in total. Weight is Aci Worldwide, Inc.'s share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Weitz Investment ManagementWally Weitz | 1.3% | 367,700 | $18.5M | Unchanged |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of ACIW each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q4 2025
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+0.2%)
Q3 2025
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+19.9%)
Q2 2025
1 superinvestor holding at quarter end
- Reduced
- Weitz Investment Management (−14.2%)
Q3 2024
1 superinvestor holding at quarter end
- Reduced
- Weitz Investment Management (−4.1%)
Q4 2023
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+30.5%)
Q3 2023
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+22.4%)
Q2 2023
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+28.4%)
Q1 2023
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+2.8%)
Q4 2022
1 superinvestor holding at quarter end
- Reduced
- Weitz Investment Management (−47.5%)
- Sold out
- Starboard Value
Q3 2022
2 superinvestors holding at quarter end
- Reduced
- Starboard Value (−76.7%)
Q2 2022
2 superinvestors holding at quarter end
- Reduced
- Starboard Value (−16.7%)
- Sold out
- Maverick Capital
Q1 2022
3 superinvestors holding at quarter end
- Reduced
- Starboard Value (−30.5%), Maverick Capital (−17.7%)
Q4 2021
3 superinvestors holding at quarter end
- Added
- Weitz Investment Management (+13.5%)
- Reduced
- Maverick Capital (−86.5%)
Q3 2021
3 superinvestors holding at quarter end
- Reduced
- Maverick Capital (−8.0%)
Q2 2021
3 superinvestors holding at quarter end
- Added
- Maverick Capital (+142.6%)
- Reduced
- Weitz Investment Management (−43.3%)