SEI 투자 회사
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionWhittier Trust Co
Latest Disclosed Ownership389 shares
Latest Disclosed Value $ 29,552
Whittier Trust Co reports 37.26% decrease in ownership of SEIC / SEI Investments Company

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 389 shares of SEI Investments Company (MX:SEIC) valued at $29,552 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 620 shares of SEI Investments Company. This represents a change in shares of -37.26% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-28 2026-03-31 13F SEI INVESTMENTS common 784117103 389 -231 -37.26 30 -46.30 0.0002
2026-01-26 2025-12-31 13F SEI INVESTMENTS common 784117103 620 -3 -0.48 55 1.89 0.0006
2025-10-31 2025-09-30 13F SEI INVTS common 784117103 623 3 0.48 53 -3.64 0.0006
2025-07-30 2025-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 56 14.58 0.0007
2025-05-02 2025-03-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 48 -5.88 0.0007
2025-02-11 2024-12-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 51 21.43 0.0007
2024-10-21 2024-09-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 43 5.00 0.0006
2024-07-29 2024-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 40 -9.09 0.0006
2024-05-02 2024-03-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 45 12.82 0.0006
2024-01-11 2023-12-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 39 5.41 0.0006
2023-10-27 2023-09-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 37 2.78 0.0007
2023-07-24 2023-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 37 2.86 0.0006
2023-04-21 2023-03-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 36 -2.78 0.0006
2023-01-25 2022-12-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 36 20.00 0.0007
2022-10-21 2022-09-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 30 -9.09 0.0006
2022-07-28 2022-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 0 0.00 33 -10.81 0.0007
2022-04-29 2022-03-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 620 -404 -39.45 37 -40.32 0.0006
2022-01-19 2021-12-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 1,024 131 14.67 62 16.98 0.0010
2021-11-01 2021-09-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 893 0 0.00 53 -3.64 0.0010
2021-07-29 2021-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 893 0 0.00 55 1.85 0.0010
2021-04-26 2021-03-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 893 231 34.89 54 42.11 0.0010
2021-01-29 2020-12-31 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 662 0 0.00 38 11.76 0.0008
2020-10-30 2020-09-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 662 0 0.00 34 -5.56 0.0008
2020-07-10 2020-06-30 13F SEI INVTS CO COM US MID-CAP EQUITIES 784117103 662 0 0.00 36 16.13 0.0010
2020-04-27 2020-03-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 662 0 0.00 31 -29.55 0.0010
2020-01-31 2019-12-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 662 0 0.00 44 10.00 0.0012
2019-10-18 2019-09-30 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 662 128 23.97 40 33.33 0.0011
2019-07-23 2019-06-30 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 30 7.14 0.0009
2019-04-29 2019-03-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 28 12.00 0.0009
2019-02-07 2018-12-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 25 -24.24 0.0009
2018-10-23 2018-09-30 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 33 0.00 0.0010
2018-07-27 2018-06-30 13F/A-1 SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 33 -17.50 0.0011
2018-07-20 2018-06-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 -274 9
2018-05-01 2018-03-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 40 5.26 0.0013
2018-02-07 2017-12-31 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 0 0.00 38 15.15 0.0013
2017-10-23 2017-09-30 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 534 404 310.77 33 371.43 0.0012
2017-07-20 2017-06-30 13F SEI INVESTMENTS CO COM US MID-CAP EQUITIES 784117103 130 0 0.00 7 0.00 0.0003
2017-04-26 2017-03-31 13F SEI INVESTMENTS US SMALL AND MID-CAP EQUITIES 784117103 130 0 0.00 7 16.67 0.0003
2017-01-18 2016-12-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 130 0 0.00 6 0.00 0.0003
2016-11-10 2016-09-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 130 0 0.00 6 0.00 0.0003
2016-07-28 2016-06-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 130 -130 -50.00 6 -45.45 0.0003
2016-04-28 2016-03-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 11 -21.43 0.0005
2016-02-10 2015-12-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 14 7.69 0.0006
2015-11-12 2015-09-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 13 0.00 0.0006
2015-08-13 2015-06-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 13 18.18 0.0006
2015-05-05 2015-03-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 260 0.00 11 0.0005
2015-02-04 2014-12-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 0 -260 -100.00 0 -100.00
2014-11-07 2014-09-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 9 0.00 0.0004
2014-08-04 2014-06-30 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 9 0.00 0.0004
2014-05-01 2014-03-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 9 0.00 0.0005
2014-02-05 2013-12-31 13F SEI INVESTMENTS CO COM US SMALL AND MID-CAP EQUITIES 784117103 260 0 0.00 9 12.50 0.0005
2013-11-18 2013-09-30 13F SEI INVESTMENTS COM 784117103 260 0 0.00 8 14.29 0.0004
2013-08-14 2013-06-30 13F SEI INVESTMENTS COM 784117103 260 260 7 0.0004
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.