SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionHaverford Trust Co
Latest Disclosed Ownership6,250 shares
Latest Disclosed Value $ 490,438
Haverford Trust Co reports 4.58% decrease in ownership of SEIC / SEI Investments Company

On May 11, 2026 - Haverford Trust Co filed a 13F-HR form disclosing ownership of 6,250 shares of SEI Investments Company (MX:SEIC) valued at $490,438 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,550 shares of SEI Investments Company. This represents a change in shares of -4.58% 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)
2026-05-11 2026-03-31 13F SEI INVTS COM 784117103 6,250 -300 -4.58 490 -8.75 0.0045
2026-02-13 2025-12-31 13F SEI INVTS COM 784117103 6,550 0 0.00 537 -3.24 0.0048
2025-11-14 2025-09-30 13F SEI INVTS COM 784117103 6,550 -63 -0.95 556 -6.57 0.0050
2025-08-13 2025-06-30 13F SEI INVTS COM 784117103 6,613 0 0.00 594 15.79 0.0056
2025-05-14 2025-03-31 13F SEI INVTS COM 784117103 6,613 0 0.00 513 -5.87 0.0052
2025-02-11 2024-12-31 13F SEI INVTS COM 784117103 6,613 0 0.00 545 19.26 0.0054
2024-11-05 2024-09-30 13F SEI INVESTMENTS COM 784117103 6,613 0 0.00 458 7.03 0.0045
2024-08-13 2024-06-30 13F SEI INVESTMENTS COM 784117103 6,613 0 0.00 428 -10.11 0.0045
2024-05-02 2024-03-31 13F SEI INVESTMENTS COM 784117103 6,613 0 0.00 475 13.10 0.0050
2024-02-08 2023-12-31 13F SEI INVESTMENTS COM 784117103 6,613 0 0.00 420 5.53 0.0047
2023-11-09 2023-09-30 13F SEI INVESTMENTS COM 784117103 6,613 0 0.00 398 1.02 0.0049
2023-08-08 2023-06-30 13F SEI INVESTMENTS COM 784117103 6,613 -80 -1.20 394 2.34 0.0044
2023-05-12 2023-03-31 13F SEI INVESTMENTS COM 784117103 6,693 23 0.34 385 -0.77 0.0046
2023-02-13 2022-12-31 13F SEI INVESTMENTS COM 784117103 6,670 0 0.00 389 18.65 0.0048
2022-11-14 2022-09-30 13F SEI INVESTMENTS COM 784117103 6,670 0 0.00 327 -9.17 0.0045
2022-08-12 2022-06-30 13F SEI INVESTMENTS COM 784117103 6,670 0 0.00 360 -10.45 0.0047
2022-05-05 2022-03-31 13F SEI INVESTMENTS COM 784117103 6,670 -1,200 -15.25 402 -16.25 0.0046
2022-02-14 2021-12-31 13F SEI INVESTMENTS COM 784117103 7,870 0 0.00 480 2.78 0.0052
2021-11-12 2021-09-30 13F SEI INVESTMENTS COM 784117103 7,870 0 0.00 467 -4.30 0.0056
2021-08-16 2021-06-30 13F/A-1 SEI INVESTMENTS COM 784117103 7,870 0 0.00 488 1.67 0.0057
2021-08-16 2021-06-30 13F SEI INVESTMENTS COM 784117103 488 -7,382 488 0.0057
2021-05-12 2021-03-31 13F SEI INVESTMENTS COM 784117103 7,870 -800 -9.23 480 -3.61 0.0061
2021-02-05 2020-12-31 13F SEI INVESTMENTS COM 784117103 8,670 1,170 15.60 498 31.05 0.0070
2020-11-10 2020-09-30 13F SEI INVESTMENTS COM 784117103 7,500 0 0.00 380 -7.77 0.0061
2020-08-13 2020-06-30 13F SEI INVESTMENTS COM 784117103 7,500 0 0.00 412 18.39 0.0071
2020-05-11 2020-03-31 13F SEI INVESTMENTS COM 784117103 7,500 0 0.00 348 -29.12 0.0071
2020-02-10 2019-12-31 13F SEI INVESTMENTS COM 784117103 7,500 -500 -6.25 491 3.59 0.0080
2019-11-04 2019-09-30 13F SEI INVESTMENTS COM 784117103 8,000 0 0.00 474 5.57 0.0083
2019-08-13 2019-06-30 13F SEI INVESTMENTS COM 784117103 8,000 500 6.67 449 14.54 0.0081
2019-05-09 2019-03-31 13F SEI INVESTMENTS COM 784117103 7,500 0 0.00 392 12.97 0.0073
2019-02-12 2018-12-31 13F SEI INVESTMENTS COM 784117103 7,500 1,200 19.05 347 -9.87 0.0074
2018-11-08 2018-09-30 13F SEI INVESTMENTS COM 784117103 6,300 0 0.00 385 -2.28 0.0071
2018-08-10 2018-06-30 13F SEI INVESTMENTS COM 784117103 6,300 0 0.00 394 -16.53 0.0078
2018-05-09 2018-03-31 13F SEI INVESTMENTS COM 784117103 6,300 6,300 472 0.0094
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.