SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionFirst Citizens Bank & Trust Co
Latest Disclosed Ownership23,124 shares
Latest Disclosed Value $ 1,814,540
First Citizens Bank & Trust Co reports 3.99% decrease in ownership of SEIC / SEI Investments Company

On May 13, 2026 - First Citizens Bank & Trust Co filed a 13F-HR form disclosing ownership of 23,124 shares of SEI Investments Company (MX:SEIC) valued at $1,814,540 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 24,085 shares of SEI Investments Company. This represents a change in shares of -3.99% during the quarter.

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)
2026-05-13 2026-03-31 13F SEI INVTS COM 784117103 23,124 -961 -3.99 1,815 -8.15 0.0206
2026-02-18 2025-12-31 13F SEI INVTS COM 784117103 24,085 1,668 7.44 1,975 3.84 0.0412
2025-10-31 2025-09-30 13F SEI INVTS COM 784117103 22,417 1,093 5.13 1,902 -0.73 0.0410
2025-07-30 2025-06-30 13F SEI INVTS COM 784117103 21,324 11,373 114.29 1,916 148.19 0.0347
2025-04-14 2025-03-31 13F SEI INVTS COM 784117103 9,951 96 0.97 772 -4.93 0.0196
2025-01-21 2024-12-31 13F SEI INVTS COM 784117103 9,855 1,047 11.89 813 33.33 0.0149
2024-10-17 2024-09-30 13F SEI INVTS COM 784117103 8,808 55 0.63 609 7.60 0.0134
2024-07-19 2024-06-30 13F SEI INVTS COM 784117103 8,753 1,711 24.30 566 11.86 0.0107
2024-04-15 2024-03-31 13F SEI INVTS COM 784117103 7,042 230 3.38 506 17.13 0.0097
2024-01-22 2023-12-31 13F SEI INVTS COM 784117103 6,812 816 13.61 433 19.67 0.0079
2023-10-30 2023-09-30 13F SEI INVTS COM 784117103 5,996 23 0.39 361 1.40 0.0070
2023-08-15 2023-06-30 13F SEI INVTS COM 784117103 5,973 5,973 356 0.0065
2022-10-20 2022-09-30 13F SEI INVTS COM 784117103 0 -3,761 -100.00 0 -100.00
2022-07-26 2022-06-30 13F SEI INVTS COM 784117103 3,761 -232 -5.81 203 -15.42 0.0072
2022-04-26 2022-03-31 13F SEI INVTS COM 784117103 3,993 75 1.91 240 0.42 0.0093
2022-03-11 2021-12-31 13F SEI INVTS COM 784117103 3,918 126 3.32 239 6.22 0.0093
2021-10-15 2021-09-30 13F SEI INVTS COM 784117103 3,792 -52 -1.35 225 -5.46 0.0107
2021-07-14 2021-06-30 13F SEI INVTS COM 784117103 3,844 -501 -11.53 238 -10.19 0.0113
2021-04-14 2021-03-31 13F SEI INVTS COM 784117103 4,345 -43 -0.98 265 5.16 0.0125
2021-01-13 2020-12-31 13F SEI INVTS COM 784117103 4,388 -387 -8.10 252 4.13 0.0129
2020-10-15 2020-09-30 13F SEI INVTS COM 784117103 4,775 10 0.21 242 -7.63 0.0170
2020-07-15 2020-06-30 13F SEI INVTS COM 784117103 4,765 4,765 262 0.0219
2020-04-17 2020-03-31 13F SEI INVESTMENTS COM 784117103 0 -3,903 -100.00 0 -100.00
2020-01-15 2019-12-31 13F/A-1 SEI INVESTMENTS COM 784117103 3,903 3,903 256 0.0246
2018-07-11 2018-06-30 13F SEI INVESTMENTS COM 784117103 0 -15,618 -100.00 0 -100.00
2018-04-11 2018-03-31 13F SEI INVESTMENTS COM 784117103 15,618 6,260 66.89 1,170 74.11 0.1591
2018-01-10 2017-12-31 13F SEI INVESTMENTS COM 784117103 9,358 -4,221 -31.08 672 60.00 0.0903
2013-10-25 2013-09-30 13F SEI INVESTMENTS COM 784117103 13,579 916 7.23 420 16.67 0.0161
2013-08-06 2013-06-30 13F SEI INVESTMENTS COM 784117103 12,663 12,663 360 0.0148
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.