SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionBancorpSouth Bank
Latest Disclosed Ownership10,825 shares
Latest Disclosed Value $ 887,866
BancorpSouth Bank reports 4.00% increase in ownership of SEIC / SEI Investments Company

On January 30, 2026 - BancorpSouth Bank filed a 13F-HR form disclosing ownership of 10,825 shares of SEI Investments Company (MX:SEIC) valued at $887,866 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 10,409 shares of SEI Investments Company. This represents a change in shares of 4.00% 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)
2026-01-30 2025-12-31 13F SEI INVTS COM 784117103 10,825 416 4.00 888 0.45 0.0520
2025-11-13 2025-09-30 13F SEI INVTS COM 784117103 10,409 0 0.00 883 -5.56 0.0536
2025-08-14 2025-06-30 13F SEI INVTS COM 784117103 10,409 -142 -1.35 935 14.16 0.0616
2025-05-14 2025-03-31 13F SEI INVTS COM 784117103 10,551 121 1.16 819 -4.77 0.0585
2025-02-13 2024-12-31 13F SEI INVTS COM 784117103 10,430 -77 -0.73 860 18.46 0.0583
2024-11-13 2024-09-30 13F SEI INVTS COM 784117103 10,507 -185 -1.73 727 5.07 0.0501
2024-08-13 2024-06-30 13F SEI INVTS COM 784117103 10,692 0 0.00 692 -10.03 0.0519
2024-05-14 2024-03-31 13F SEI INVTS COM 784117103 10,692 69 0.65 769 13.78 0.0560
2024-02-13 2023-12-31 13F SEI INVTS COM 784117103 10,623 0 0.00 675 5.63 0.0548
2023-11-13 2023-09-30 13F SEI INVTS COM 784117103 10,623 0 0.00 640 0.95 0.0563
2023-08-14 2023-06-30 13F SEI INVTS COM 784117103 10,623 -146 -1.36 633 2.26 0.0552
2023-05-12 2023-03-31 13F SEI INVTS COM 784117103 10,769 -157 -1.44 620 -2.67 0.0571
2023-02-13 2022-12-31 13F SEI INVTS COM 784117103 10,926 -67 -0.61 637 18.00 0.0588
2022-11-10 2022-09-30 13F SEI INVTS COM 784117103 10,993 0 0.00 539 -9.26 0.0558
2022-08-12 2022-06-30 13F SEI INVTS COM 784117103 10,993 -346 -3.05 594 -13.03 0.0853
2022-05-13 2022-03-31 13F SEI INVTS COM 784117103 11,339 -461 -3.91 683 -5.01 0.0850
2022-02-11 2021-12-31 13F SEI INVTS COM 784117103 11,800 11 0.09 719 2.86 0.0896
2021-11-10 2021-09-30 13F SEI INVTS COM 784117103 11,789 830 7.57 699 2.95 0.0975
2021-08-13 2021-06-30 13F SEI INVTS COM 784117103 10,959 272 2.55 679 4.30 0.0986
2021-05-11 2021-03-31 13F SEI INVTS COM 784117103 10,687 281 2.70 651 8.86 0.0988
2021-02-04 2020-12-31 13F SEI INVTS COM 784117103 10,406 115 1.12 598 14.56 0.0938
2020-11-09 2020-09-30 13F SEI INVTS COM 784117103 10,291 0 0.00 522 -7.61 0.1027
2020-07-27 2020-06-30 13F SEI INVTS COM 784117103 10,291 66 0.65 565 19.20 0.1166
2020-04-30 2020-03-31 13F SEI INVESTMENTS COM 784117103 10,225 639 6.67 474 -24.40 0.1194
2020-02-04 2019-12-31 13F SEI INVESTMENTS COM 784117103 9,586 0 0.00 627 10.39 0.1159
2019-11-06 2019-09-30 13F SEI INVESTMENTS COM 784117103 9,586 -47 -0.49 568 5.19 0.0535
2019-07-30 2019-06-30 13F SEI INVESTMENTS COM 784117103 9,633 257 2.74 540 10.20 0.0522
2019-05-02 2019-03-31 13F SEI INVESTMENTS COM 784117103 9,376 9,376 490 0.0493
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.