SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership2,830,332 shares
Latest Disclosed Value $ 222,125,134
Geode Capital Management, Llc reports 2.21% decrease in ownership of SEIC / SEI Investments Company

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 2,830,332 shares of SEI Investments Company (MX:SEIC) valued at $222,125,134 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,894,317 shares of SEI Investments Company. This represents a change in shares of -2.21% 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 COM 784117103 2,830,332 -63,985 -2.21 222,125 -6.44 0.0074
2026-02-09 2025-12-31 13F SEI INVESTMENTS COM 784117103 2,894,317 109,974 3.95 237,421 0.48 0.0147
2025-11-12 2025-09-30 13F SEI INVESTMENTS COM 784117103 2,784,343 208,306 8.09 236,276 2.06 0.0151
2025-08-08 2025-06-30 13F SEI INVESTMENTS COM 784117103 2,576,037 -111,546 -4.15 231,505 11.14 0.0162
2025-05-13 2025-03-31 13F SEI INVESTMENTS COM 784117103 2,687,583 106,846 4.14 208,308 -2.01 0.0164
2025-02-12 2024-12-31 13F SEI INVESTMENTS COM 784117103 2,580,737 60,307 2.39 212,589 22.11 0.0165
2024-11-12 2024-09-30 13F SEI INVESTMENTS COM 784117103 2,520,430 300,704 13.55 174,092 21.42 0.0141
2024-08-09 2024-06-30 13F SEI INVESTMENTS COM 784117103 2,219,726 118,850 5.66 143,384 -4.94 0.0126
2024-05-13 2024-03-31 13F SEI INVESTMENTS COM 784117103 2,100,876 137,194 6.99 150,839 21.07 0.0139
2024-02-13 2023-12-31 13F SEI INVESTMENTS COM 784117103 1,963,682 23,053 1.19 124,590 6.71 0.0130
2023-11-13 2023-09-30 13F SEI INVESTMENTS COM 784117103 1,940,629 150,723 8.42 116,757 9.59 0.0139
2023-08-11 2023-06-30 13F SEI INVESTMENTS COM 784117103 1,789,906 -142,785 -7.39 106,542 -4.10 0.0125
2023-05-15 2023-03-31 13F SEI INVESTMENTS COM 784117103 1,932,691 -71,516 -3.57 111,102 95,676.72 0.0144
2023-02-13 2022-12-31 13F SEI INVESTMENTS COM 784117103 2,004,207 18,194 0.92 117 -99.88 0.0164
2022-11-14 2022-09-30 13F SEI INVESTMENTS COM 784117103 1,986,013 21,933 1.12 97,348 -8.16 0.0148
2022-08-12 2022-06-30 13F SEI INVESTMENTS COM 784117103 1,964,080 167,856 9.34 106,002 -1.85 0.0155
2022-05-13 2022-03-31 13F SEI INVESTMENTS COM 784117103 1,796,224 -147,585 -7.59 108,000 -8.80 0.0135
2022-02-11 2021-12-31 13F SEI INVESTMENTS COM 784117103 1,943,809 141,772 7.87 118,418 10.86 0.0143
2021-11-12 2021-09-30 13F SEI INVESTMENTS COM 784117103 1,802,037 -141,039 -7.26 106,819 -11.27 0.0144
2021-08-13 2021-06-30 13F SEI INVESTMENTS COM 784117103 1,943,076 41,235 2.17 120,381 3.92 0.0166
2021-05-12 2021-03-31 13F SEI INVESTMENTS COM 784117103 1,901,841 30,557 1.63 115,845 7.54 0.0177
2021-02-12 2020-12-31 13F SEI INVESTMENTS COM 784117103 1,871,284 -80,725 -4.14 107,720 8.50 0.0181
2020-11-13 2020-09-30 13F SEI INVESTMENTS COM 784117103 1,952,009 -99,864 -4.87 99,279 -12.00 0.0195
2020-08-13 2020-06-30 13F SEI INVESTMENTS COM 784117103 2,051,873 -140,055 -6.39 112,814 11.05 0.0241
2020-05-14 2020-03-31 13F SEI INVESTMENTS COM 784117103 2,191,928 27,235 1.26 101,589 -28.34 0.0265
2020-02-20 2019-12-31 13F/A-1 SEI INVESTMENTS COM 784117103 2,164,693 40,057 1.89 141,774 12.55 0.0296
2020-02-13 2019-12-31 13F SEI INVESTMENTS COM 784117103 2,164,693 40,057 141,774 18,067.8532
2019-11-12 2019-09-30 13F SEI INVESTMENTS COM 784117103 2,124,636 33,085 1.58 125,963 7.31 0.0294
2019-08-14 2019-06-30 13F SEI INVESTMENTS COM 784117103 2,091,551 62,054 3.06 117,384 10.67 0.0284
2019-05-14 2019-03-31 13F SEI INVESTMENTS COM 784117103 2,029,497 259,369 14.65 106,069 29.76 0.0275
2019-03-06 2018-12-31 13F/A-1 SEI INVESTMENTS COM 784117103 1,770,128 283,678 19.08 81,741 -9.95 0.0253
2019-02-13 2018-12-31 13F SEI INVESTMENTS COM 784117103 1,770,128 283,678 81,741
2018-11-13 2018-09-30 13F SEI INVESTMENTS COM 784117103 1,486,450 29,588 2.03 90,770 -0.28 0.0256
2018-08-14 2018-06-30 13F SEI INVESTMENTS COM 784117103 1,456,862 38,578 2.72 91,026 -14.26 0.0280
2018-05-15 2018-03-31 13F SEI INVESTMENTS COM 784117103 1,418,284 66,110 4.89 106,170 9.32 0.0346
2018-02-13 2017-12-31 13F SEI INVESTMENTS COM 784117103 1,352,174 35,184 2.67 97,117 20.81 0.0330
2017-11-14 2017-09-30 13F SEI INVESTMENTS COM 784117103 1,316,990 42,094 3.30 80,386 17.29 0.0297
2017-08-14 2017-06-30 13F SEI INVESTMENTS COM 784117103 1,274,896 52,687 4.31 68,539 11.21 0.0270
2017-06-21 2017-03-31 13F/A-1 SEI INVESTMENTS CO COM COM 784117103 1,222,209 101,349 9.04 61,628 11.42 0.0253
2017-05-12 2017-03-31 13F SEI INVESTMENTS CO COM COM 784117103 1,222,209 61,628
2017-02-14 2016-12-31 13F SEI INVESTMENTS CO COM COM 784117103 1,120,860 55,923 5.25 55,310 13.91 0.0257
2016-11-10 2016-09-30 13F SEI INVESTMENTS CO COM COM 784117103 1,064,937 44,009 4.31 48,554 -1.10 0.0245
2016-08-12 2016-06-30 13F SEI INVESTMENTS CO COM COM 784117103 1,020,928 41,518 4.24 49,096 16.50 0.0267
2016-05-13 2016-03-31 13F SEI INVESTMENTS CO COM COM 784117103 979,410 31,798 3.36 42,141 -15.08 0.0224
2016-02-12 2015-12-31 13F SEI INVESTMENTS CO COM COM 784117103 947,612 86,999 10.11 49,625 19.64 0.0283
2015-11-13 2015-09-30 13F SEI INVESTMENTS CO COM COM 784117103 860,613 -74,409 -7.96 41,479 -9.47 0.0252
2015-08-14 2015-06-30 13F SEI INVESTMENTS CO COM COM 784117103 935,022 23,122 2.54 45,818 14.02 0.0262
2015-05-14 2015-03-31 13F SEI INVESTMENTS CO COM COM 784117103 911,900 3,382 0.37 40,184 10.52 0.0230
2015-02-12 2014-12-31 13F SEI INVESTMENTS CO COM COM 784117103 908,518 -55,842 -5.79 36,359 4.29 0.0216
2014-11-14 2014-09-30 13F SEI INVESTMENTS CO COM COM 784117103 964,360 36,255 3.91 34,863 14.65 0.0226
2014-08-13 2014-06-30 13F SEI INVESTMENTS CO COM COM 784117103 928,105 18,516 2.04 30,407 -0.52 0.0197
2014-05-14 2014-03-31 13F SEI INVESTMENTS CO COM COM 784117103 909,589 70,525 8.41 30,566 4.90 0.0205
2014-02-14 2013-12-31 13F SEI INVESTMENTS CO COM COM 784117103 839,064 160,744 23.70 29,137 38.98 0.0202
2013-11-14 2013-09-30 13F SEI INVESTMENTS CO COM COM 784117103 678,320 24,499 3.75 20,965 12.80 0.0168
2013-08-14 2013-06-30 13F SEI INVESTMENTS CO COM COM 784117103 653,821 653,821 18,586 0.0163
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.