SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionEnsign Peak Advisors, Inc
Latest Disclosed Ownership23,605 shares
Latest Disclosed Value $ 1,852,284
Ensign Peak Advisors, Inc reports 44.42% decrease in ownership of SEIC / SEI Investments Company

On May 13, 2026 - Ensign Peak Advisors, Inc filed a 13F-HR form disclosing ownership of 23,605 shares of SEI Investments Company (MX:SEIC) valued at $1,852,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 42,474 shares of SEI Investments Company. This represents a change in shares of -44.42% 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 23,605 -18,869 -44.42 1,852 -46.83 0.0035
2026-02-12 2025-12-31 13F SEI INVTS COM 784117103 42,474 -9,999 -19.06 3,484 -21.77 0.0062
2025-11-13 2025-09-30 13F SEI INVTS COM 784117103 52,473 1,830 3.61 4,452 -2.15 0.0073
2025-08-12 2025-06-30 13F SEI INVTS COM 784117103 50,643 -12,794 -20.17 4,551 -7.60 0.0078
2025-05-14 2025-03-31 13F SEI INVTS COM 784117103 63,437 -6,190 -8.89 4,925 -14.25 0.0094
2025-02-14 2024-12-31 13F SEI INVTS COM 784117103 69,627 -4,516 -6.09 5,743 11.95 0.0102
2024-11-14 2024-09-30 13F SEI INVTS COM 784117103 74,143 -7,315 -8.98 5,130 -2.66 0.0090
2024-08-13 2024-06-30 13F SEI INVTS COM 784117103 81,458 -1,615 -1.94 5,270 -11.77 0.0096
2024-05-14 2024-03-31 13F SEI INVTS COM 784117103 83,073 -6,526 -7.28 5,973 4.88 0.0109
2024-02-14 2023-12-31 13F SEI INVTS COM 784117103 89,599 9,688 12.12 5,694 18.30 0.0113
2023-11-13 2023-09-30 13F SEI INVTS COM 784117103 79,911 -5,708 -6.67 4,813 -5.70 0.0103
2023-08-14 2023-06-30 13F SEI INVTS COM 784117103 85,619 18,730 28.00 5,105 32.61 0.0103
2023-05-15 2023-03-31 13F SEI INVTS COM 784117103 66,889 -11,833 -15.03 3,849 -16.13 0.0083
2023-02-13 2022-12-31 13F SEI Investments COM 784117103 78,722 -31,432 -28.53 4,589 -15.05 0.0103
2022-11-14 2022-09-30 13F SEI Investments COM 784117103 110,154 41,905 61.40 5,402 46.51 0.0134
2022-08-12 2022-06-30 13F SEI Investments COM 784117103 68,249 6,355 10.27 3,687 -1.07 0.0088
2022-05-16 2022-03-31 13F SEI Investments COM 784117103 61,894 -27,265 -30.58 3,727 -31.41 0.0076
2022-02-11 2021-12-31 13F SEI Investments COM 784117103 89,159 -13,385 -13.05 5,434 -10.64 0.0104
2021-11-12 2021-09-30 13F SEI Investments COM 784117103 102,544 0 0.00 6,081 -4.31 0.0127
2021-08-13 2021-06-30 13F SEI Investments COM 784117103 102,544 -2,145 -2.05 6,355 -0.38 0.0128
2021-05-12 2021-03-31 13F SEI Investments COM 784117103 104,689 -31,579 -23.17 6,379 -18.55 0.0137
2021-02-12 2020-12-31 13F SEI Investments COM 784117103 136,268 -3,598 -2.57 7,832 10.40 0.0178
2020-11-12 2020-09-30 13F SEI Investments COM 784117103 139,866 -51,816 -27.03 7,094 -32.69 0.0179
2020-08-12 2020-06-30 13F SEI Investments COM 784117103 191,682 -39,462 -17.07 10,539 -1.61 0.0286
2020-05-11 2020-03-31 13F SEI Investments COM 784117103 231,144 58,557 33.93 10,711 -5.22 0.0359
2020-02-14 2019-12-31 13F SEI Investments COM 784117103 172,587 172,587 11,301 0.0299
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.