ACI Worldwide, Inc.
US ˙ NasdaqGS ˙ US0044981019

SecurityACIW / ACI Worldwide, Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership3,480 shares
Latest Disclosed Value $ 142,715
Assetmark, Inc reports 7.62% decrease in ownership of ACIW / ACI Worldwide, Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 3,480 shares of ACI Worldwide, Inc. (US:ACIW) valued at $142,715 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 3,767 shares of ACI Worldwide, Inc.. This represents a change in shares of -7.62% during the quarter. The current value of the position is $144,629 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-06 2026-03-31 13F ACI WORLDWIDE COM 004498101 3,480 -287 -7.62 143 -21.11 0.0003
2026-01-23 2025-12-31 13F ACI WORLDWIDE COM 004498101 3,767 -68 -1.77 180 -10.89 0.0004
2025-11-06 2025-09-30 13F ACI WORLDWIDE COM 004498101 3,835 -200 -4.96 202 9.19 0.0004
2025-08-04 2025-06-30 13F ACI WORLDWIDE COM 004498101 4,035 -24,503 -85.86 185 -88.15 0.0004
2025-05-06 2025-03-31 13F ACI WORLDWIDE COM 004498101 28,538 -6,833 -19.32 1,561 -14.98 0.0043
2025-02-06 2024-12-31 13F ACI WORLDWIDE COM 004498101 35,371 1,735 5.16 1,836 7.24 0.0050
2024-11-01 2024-09-30 13F ACI WORLDWIDE COM 004498101 33,636 2,096 6.65 1,712 37.18 0.0049
2024-08-13 2024-06-30 13F ACI WORLDWIDE COM 004498101 31,540 10,278 48.34 1,249 76.77 0.0039
2024-05-07 2024-03-31 13F ACI WORLDWIDE COM 004498101 21,262 4,273 25.15 706 36.03 0.0023
2024-02-09 2023-12-31 13F ACI WORLDWIDE COM 004498101 16,989 4,751 38.82 520 88.04 0.0019
2023-10-27 2023-09-30 13F ACI WORLDWIDE COM 004498101 12,238 1,885 18.21 276 15.48 0.0011
2023-08-11 2023-06-30 13F ACI WORLDWIDE INC COM COM 004498101 10,353 3,150 43.73 240 23.20 0.0009
2023-05-05 2023-03-31 13F ACI WORLDWIDE INC COM COM 004498101 7,203 427 6.30 194 25.16 0.0008
2023-02-10 2022-12-31 13F ACI WORLDWIDE COM 004498101 6,776 2,154 46.60 156 59.79 0.0007
2022-11-01 2022-09-30 13F ACI WORLDWIDE COM 004498101 4,622 1,771 62.12 97 31.08 0.0005
2022-08-03 2022-06-30 13F ACI WORLDWIDE INC COM COM 004498101 2,851 2,243 368.91 74 289.47 0.0003
2022-05-13 2022-03-31 13F ACI WORLDWIDE INC COM COM 004498101 608 608 19 0.0001
2021-08-16 2021-06-30 13F ACI WORLDWIDE COM 004498101 0 -101 -100.00 0 -100.00
2021-05-14 2021-03-31 13F ACI WORLDWIDE COM 004498101 101 4 4.12 4 0.00 0.0000
2021-02-10 2020-12-31 13F ACI WORLDWIDE INC COM COM 004498101 97 0 0.00 4 33.33 0.0000
2020-11-13 2020-09-30 13F ACI WORLDWIDE INC COM COM 004498101 97 13 15.48 3 50.00 0.0000
2020-08-11 2020-06-30 13F ACI WORLDWIDE INC COM COM 004498101 84 30 55.56 2 100.00 0.0000
2020-05-12 2020-03-31 13F ACI WORLDWIDE INC COM COM 004498101 54 54 -35.71 1 -50.00 0.0000
2018-05-16 2018-03-31 13F ACI WORLDWIDE INC COM COM 004498101 0 -3,834 -100.00 0 -100.00
2018-02-13 2017-12-31 13F ACI WORLDWIDE INC COM COM 004498101 3,834 2,856 292.02 87 295.45 0.0009
2017-11-08 2017-09-30 13F ACI WORLDWIDE INC COM COM 004498101 978 218 28.68 22 29.41 0.0003
2017-08-14 2017-06-30 13F ACI WORLDWIDE INC COM COM 004498101 760 0 0.00 17 6.25 0.0002
2017-09-15 2017-03-31 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 760 -41 -5.12 16 6.67 0.0002
2017-05-08 2017-03-31 13F ACI WORLDWIDE INC COM COM 004498101 760 -41 16
2017-09-15 2016-12-31 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 801 0 0.00 15 -6.25 0.0002
2017-02-14 2016-12-31 13F ACI WORLDWIDE INC COM COM 004498101 801 0 15
2017-09-14 2016-09-30 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 801 0 0.00 16 0.00 0.0002
2016-11-04 2016-09-30 13F ACI WORLDWIDE INC COM COM 004498101 801 0 16
2017-09-14 2016-06-30 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 801 512 177.16 16 166.67 0.0003
2016-08-08 2016-06-30 13F ACI WORLDWIDE INC COM COM 004498101 801 512 16
2017-09-14 2016-03-31 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 289 250 641.03 6 500.00 0.0001
2016-05-13 2016-03-31 13F ACI WORLDWIDE INC COM COM 004498101 289 250 6
2017-09-14 2015-12-31 13F/A-1 ACI WORLDWIDE INC COM COM 004498101 39 39 -86.51 1 -83.33 0.0000
2016-02-12 2015-12-31 13F ACI WORLDWIDE INC COM COM 004498101 39 39 1
2015-11-10 2015-09-30 13F ACI WORLDWIDE INC COM COM 004498101 0 0 0 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.