SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionBeutel, Goodman & Co Ltd.
Latest Disclosed Ownership1,773,154 shares
Latest Disclosed Value $ 139,139
Beutel, Goodman & Co Ltd. reports 5.80% decrease in ownership of SEIC / SEI Investments Company

On May 15, 2026 - Beutel, Goodman & Co Ltd. filed a 13F-HR form disclosing ownership of 1,773,154 shares of SEI Investments Company (MX:SEIC) valued at $139,139 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,882,427 shares of SEI Investments Company. This represents a change in shares of -5.80% 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)
2026-05-15 2026-03-31 13F SEI Investments Common 784117103 1,773,154 -109,273 -5.80 139 -9.74 0.9432
2026-02-13 2025-12-31 13F SEI Investments Common 784117103 1,882,427 -140,523 -6.95 154 -9.94 0.9485
2025-11-14 2025-09-30 13F SEI Investments Common 784117103 2,022,950 -577,666 -22.21 172 -26.61 1.0338
2025-08-13 2025-06-30 13F SEI Investments Common 784117103 2,600,616 -74,994 -2.80 234 12.56 1.3315
2025-05-14 2025-03-31 13F/A-1 SEI Investments Common 784117103 2,675,610 11,741 0.44 208 -5.48 1.1970
2025-05-12 2025-03-31 13F SEI Investments Common 784117103 2,675,610 11,741 208 1.1909
2025-02-12 2024-12-31 13F SEI Investments Common 784117103 2,663,869 -1,351,040 -33.65 220 -20.94 1.1953
2024-11-13 2024-09-30 13F SEI Investments Common 784117103 4,014,909 -41,950 -1.03 278 5.73 1.3690
2024-08-13 2024-06-30 13F SEI Investments Common 784117103 4,056,859 38,512 0.96 262 -9.03 1.3948
2024-05-14 2024-03-31 13F/A-1 SEI Investments Common 784117103 4,018,347 -1,632 -0.04 289 12.94 1.4884
2024-05-13 2024-03-31 13F SEI Investments Common 784117103 4,019,979 0 255 1.3618
2024-02-09 2023-12-31 13F SEI Investments Common 784117103 4,019,979 -16,395 -0.41 255 4.94 1.3550
2023-11-13 2023-09-30 13F SEI Investments Common 784117103 4,036,374 -915 -0.02 243 1.25 1.4364
2023-08-14 2023-06-30 13F SEI Investments Common 784117103 4,037,289 88,851 2.25 241 5.73 1.3492
2023-05-12 2023-03-31 13F SEI Investments Common 784117103 3,948,438 92,137 2.39 227 1.34 1.3357
2023-02-14 2022-12-31 13F SEI Investments Common 784117103 3,856,301 -9,230 -0.24 225 -99.88 1.3612
2022-11-14 2022-09-30 13F SEI Investments Common 784117103 3,865,531 -35,030 -0.90 189,604 -10.02 1.2821
2022-08-15 2022-06-30 13F SEI Investments Common 784117103 3,900,561 107,680 2.84 210,708 -7.73 1.3091
2022-05-12 2022-03-31 13F SEI Investments Common 784117103 3,792,881 968,459 34.29 228,369 32.68 1.2921
2022-02-14 2021-12-31 13F SEI Investments Common 784117103 2,824,422 13,335 0.47 172,120 3.25 0.9824
2021-11-12 2021-09-30 13F SEI Investments Common 784117103 2,811,087 123,505 4.60 166,697 0.09 1.0204
2021-08-13 2021-06-30 13F SEI Investments Common 784117103 2,687,582 631,191 30.69 166,549 32.93 0.9904
2021-05-14 2021-03-31 13F SEI Investments Common 784117103 2,056,391 384,526 23.00 125,295 30.40 0.7866
2021-02-05 2020-12-31 13F SEI Investments Common 784117103 1,671,865 619,280 58.83 96,082 79.97 0.6506
2020-11-13 2020-09-30 13F SEI Investments Common 784117103 1,052,585 765,538 266.69 53,387 238.30 0.4294
2020-08-14 2020-06-30 13F SEI Investments Common 784117103 287,047 287,047 15,781 0.1297
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.