SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionTd Asset Management Inc
Latest Disclosed Ownership107,556 shares
Latest Disclosed Value $ 8,439,919
Td Asset Management Inc reports 2.40% decrease in ownership of SEIC / SEI Investments Company

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 107,556 shares of SEI Investments Company (MX:SEIC) valued at $8,439,919 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 110,200 shares of SEI Investments Company. This represents a change in shares of -2.40% 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)
2026-05-11 2026-03-31 13F SEI INVTS COM 784117103 107,556 -2,644 -2.40 8,440 -6.63 0.0037
2026-02-10 2025-12-31 13F SEI INVTS COM 784117103 110,200 -1,038 -0.93 9,039 -4.24 0.0073
2025-11-10 2025-09-30 13F SEI INVTS COM 784117103 111,238 -14,438 -11.49 9,439 -16.43 0.0077
2025-07-28 2025-06-30 13F SEI INVTS COM 784117103 125,676 -19,288 -13.31 11,293 0.36 0.0096
2025-05-07 2025-03-31 13F SEI INVTS COM 784117103 144,964 5,590 4.01 11,254 -2.11 0.0104
2025-02-11 2024-12-31 13F SEI INVTS COM 784117103 139,374 -39,656 -22.15 11,496 -7.32 0.0102
2024-11-01 2024-09-30 13F SEI INVTS COM 784117103 179,030 -10,839 -5.71 12,403 0.99 0.0109
2024-08-02 2024-06-30 13F SEI INVTS COM 784117103 189,869 5,723 3.11 12,283 -7.24 0.0115
2024-05-08 2024-03-31 13F SEI INVTS COM 784117103 184,146 -2,696 -1.44 13,240 11.51 0.0123
2024-02-12 2023-12-31 13F SEI INVTS COM 784117103 186,842 226 0.12 11,874 5.64 0.0117
2023-10-27 2023-09-30 13F SEI INVTS COM 784117103 186,616 23 0.01 11,240 1.03 0.0136
2023-08-09 2023-06-30 13F SEI INVTS COM 784117103 186,593 -19,728 -9.56 11,125 -6.31 0.0127
2023-05-10 2023-03-31 13F SEI INVTS COM 784117103 206,321 -10,778 -4.96 11,874 -6.19 0.0143
2023-02-07 2022-12-31 13F SEI INVTS COM 784117103 217,099 -4,743 -2.14 12,657 12.84 0.0156
2022-11-07 2022-09-30 13F SEI INVTS COM 784117103 221,842 66,747 43.04 11,216 33.87 0.0140
2022-08-04 2022-06-30 13F SEI INVTS COM 784117103 155,095 -6,051 -3.75 8,378 -13.66 0.0097
2022-05-10 2022-03-31 13F SEI INVTS COM 784117103 161,146 28,429 21.42 9,703 19.97 0.0057
2022-05-10 2022-03-31 13F SEI INVTS COM 784117103 148,242 8,926
2022-02-10 2021-12-31 13F SEI INVTS COM 784117103 132,717 -2,887 -2.13 8,088 0.57 0.0068
2021-11-09 2021-09-30 13F SEI INVTS COM 784117103 135,604 -764 -0.56 8,042 -3.00 0.0083
2021-08-11 2021-06-30 13F SEI INVTS COM 784117103 136,368 19,508 16.69 8,291 16.43 0.0084
2021-05-14 2021-03-31 13F SEI INVTS COM 784117103 116,860 8,772 8.12 7,121 14.63 0.0080
2021-02-16 2020-12-31 13F SEI INVTS COM 784117103 108,088 -563 -0.52 6,212 12.74 0.0075
2020-11-10 2020-09-30 13F SEI INVTS COM 784117103 108,651 57,306 111.61 5,510 95.18 0.0076
2020-08-13 2020-06-30 13F SEI INVTS COM 784117103 51,345 45,960 853.48 2,823 1,029.20 0.0040
2020-05-15 2020-03-31 13F SEI INVESTMENTS COM 784117103 5,385 -1,900 -26.08 250 -47.59 0.0004
2020-02-11 2019-12-31 13F SEI INVESTMENTS COM 784117103 7,285 -300 -3.96 477 6.24 0.0007
2019-11-07 2019-09-30 13F SEI INVESTMENTS COM 784117103 7,585 0 0.00 449 5.40 0.0007
2019-08-01 2019-06-30 13F SEI INVESTMENTS COM 784117103 7,585 -93 -1.21 426 6.23 0.0006
2019-05-08 2019-03-31 13F SEI INVESTMENTS COM 784117103 7,678 1,871 32.22 401 49.63 0.0006
2019-02-01 2018-12-31 13F SEI INVESTMENTS COM 784117103 5,807 552 10.50 268 -16.51 0.0005
2018-11-01 2018-09-30 13F SEI INVESTMENTS COM 784117103 5,255 -2,253 -30.01 321 -31.70 0.0005
2018-07-31 2018-06-30 13F SEI INVESTMENTS COM 784117103 7,508 3,400 82.77 470 52.60 0.0007
2018-05-11 2018-03-31 13F SEI INVESTMENTS COM 784117103 4,108 524 14.62 308 19.38 0.0005
2018-02-02 2017-12-31 13F SEI INVESTMENTS COM 784117103 3,584 3,584 258 0.0004
2017-11-09 2017-09-30 13F SEI INVESTMENTS COM 784117103 0 -4,507 -100.00 0 -100.00
2017-08-01 2017-06-30 13F SEI INVESTMENTS COM 784117103 4,507 -5,307 -54.08 242 -51.11 0.0004
2017-05-05 2017-03-31 13F SEI INVESTMENTS COM 784117103 9,814 680 7.44 495 9.76 0.0008
2017-02-08 2016-12-31 13F SEI INVESTMENTS COM 784117103 9,134 388 4.44 451 13.03 0.0008
2016-11-02 2016-09-30 13F SEI INVESTMENTS COM 784117103 8,746 -2,000 -18.61 399 -22.82 0.0007
2016-08-04 2016-06-30 13F SEI INVESTMENTS COM 784117103 10,746 1,370 14.61 517 27.97 0.0009
2016-05-05 2016-03-31 13F SEI INVESTMENTS COM 784117103 9,376 0 0.00 404 -17.72 0.0008
2016-02-04 2015-12-31 13F SEI INVESTMENTS COM 784117103 9,376 2,400 34.40 491 46.13 0.0010
2015-11-12 2015-09-30 13F SEI INVESTMENTS COM 784117103 6,976 -4,400 -38.68 336 -39.78 0.0007
2015-08-11 2015-06-30 13F SEI INVESTMENTS COM 784117103 11,376 -4,500 -28.34 558 -20.29 0.0010
2015-04-28 2015-03-31 13F SEI INVESTMENTS COM 784117103 15,876 15,876 0.00 700 0.0013
2015-01-30 2014-12-31 13F SEI INVESTMENTS COM 784117103 0 -6,222 -100.00 0 -100.00
2014-11-06 2014-09-30 13F SEI INVESTMENTS COM 784117103 6,222 -400 -6.04 225 3.69 0.0004
2014-08-12 2014-06-30 13F SEI INVESTMENTS COM 784117103 6,622 0 0.00 217 -2.69 0.0004
2014-05-09 2014-03-31 13F SEI INVESTMENTS COM 784117103 6,622 -1,100 -14.25 223 -16.79 0.0004
2014-02-07 2013-12-31 13F SEI INVESTMENTS COM 784117103 7,722 0 0.00 268 12.13 0.0005
2013-11-08 2013-09-30 13F SEI INVESTMENTS COM 784117103 7,722 7,722 239 0.0005
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.