SEI Investments Company
US ˙ NasdaqGS ˙ US7841171033

SecuritySEIC / SEI Investments Company
InstitutionBokf, Na
Latest Disclosed Ownership40,387 shares
Latest Disclosed Value $ 3,169,167
Bokf, Na reports 1.76% decrease in ownership of SEIC / SEI Investments Company

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 40,387 shares of SEI Investments Company (US:SEIC) valued at $3,169,168 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 41,109 shares of SEI Investments Company. This represents a change in shares of -1.76% during the quarter. The current value of the position is $3,577,480 USD.

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)
2026-05-08 2026-03-31 13F SEI INVESTMENTS common 784117103 40,387 -722 -1.76 3,169 -5.99 0.0373
2026-02-03 2025-12-31 13F SEI INVESTMENTS common 784117103 41,109 -2,124 -4.91 3,372 -8.10 0.0516
2025-11-13 2025-09-30 13F SEI INVESTMENTS common 784117103 43,233 -47 -0.11 3,668 -5.68 0.0552
2025-08-12 2025-06-30 13F SEI INVESTMENTS common 784117103 43,280 555 1.30 3,889 17.28 0.0630
2025-05-13 2025-03-31 13F SEI INVESTMENTS common 784117103 42,725 32,986 338.70 3,317 331.21 0.0586
2025-02-14 2024-12-31 13F SEI INVESTMENTS common 784117103 9,739 0 0.00 769 13.93 0.0130
2024-11-14 2024-09-30 13F SEI INVESTMENTS common 784117103 9,739 -2,344 -19.40 675 -13.57 0.0120
2024-08-08 2024-06-30 13F SEI INVTS COM 784117103 12,083 10,244 557.04 782 500.77 0.0140
2024-05-15 2024-03-31 13F SEI INVTS COM 784117103 1,839 -100 -5.16 130 5.69 0.0024
2024-02-14 2023-12-31 13F SEI INVTS COM 784117103 1,939 0 0.00 123 18.27 0.0024
2023-11-14 2023-09-30 13F SEI INVTS COM 784117103 1,939 -152 -7.27 104 -16.13 0.0023
2023-08-21 2023-06-30 13F SEI INVTS COM 784117103 2,091 -652 -23.77 125 -21.02 0.0025
2023-05-11 2023-03-31 13F SEI INVTS COM 784117103 2,743 2,743 158 0.0033
2022-08-11 2022-06-30 13F SEI INVTS COM 784117103 0 -3,560 -100.00 0 -100.00
2022-05-13 2022-03-31 13F SEI INVTS COM 784117103 3,560 -12 -0.34 214 -1.83 0.0035
2022-03-11 2021-12-31 13F SEI INVTS COM 784117103 3,572 -191 -5.08 218 -2.24 0.0034
2021-11-10 2021-09-30 13F SEI INVTS COM 784117103 3,763 -356 -8.64 223 -11.16 0.0038
2021-04-21 2021-03-31 13F SEI INVTS COM 784117103 4,119 -23 -0.56 251 5.46 0.0046
2021-02-12 2020-12-31 13F SEI INVTS COM 784117103 4,142 -5,547 -57.25 238 -51.63 0.0045
2020-10-30 2020-09-30 13F SEI INVTS COM 784117103 9,689 -9,579 -49.71 492 -53.58 0.0108
2020-08-12 2020-06-30 13F SEI INVTS COM 784117103 19,268 457 2.43 1,060 21.70 0.0249
2020-05-13 2020-03-31 13F SEI INVTS COM 784117103 18,811 -2,913 -13.41 871 -38.79 0.0251
2020-02-12 2019-12-31 13F SEI INVESTMENTS COM 784117103 21,724 13,357 159.64 1,423 187.47 0.0322
2019-11-13 2019-09-30 13F SEI INVESTMENTS COM 784117103 8,367 -13,432 -61.62 495 -59.53 0.0119
2019-08-14 2019-06-30 13F SEI INVESTMENTS COM 784117103 21,799 -2,714 -11.07 1,223 -4.53 0.0294
2019-05-15 2019-03-31 13F SEI INVESTMENTS COM 784117103 24,513 365 1.51 1,281 14.78 0.0307
2019-02-13 2018-12-31 13F SEI INVESTMENTS COM 784117103 24,148 251 1.05 1,116 -23.56 0.0319
2018-11-13 2018-09-30 13F SEI INVESTMENTS COM 784117103 23,897 365 1.55 1,460 -0.82 0.0366
2018-08-13 2018-06-30 13F SEI INVESTMENTS COM 784117103 23,532 -837 -3.43 1,472 -19.34 0.0396
2018-05-14 2018-03-31 13F SEI INVESTMENTS COM 784117103 24,369 186 0.77 1,825 5.01 0.0518
2018-02-14 2017-12-31 13F SEI INVESTMENTS COM 784117103 24,183 293 1.23 1,738 19.20 0.0479
2017-11-14 2017-09-30 13F SEI INVESTMENTS COM 784117103 23,890 2,047 9.37 1,458 24.19 0.0423
2017-08-14 2017-06-30 13F SEI INVESTMENTS COM 784117103 21,843 260 1.20 1,174 7.81 0.0369
2017-05-15 2017-03-31 13F SEI INVESTMENTS COM 784117103 21,583 531 2.52 1,089 4.81 0.0340
2017-02-14 2016-12-31 13F SEI INVESTMENTS COM 784117103 21,052 -406 -1.89 1,039 6.24 0.0342
2016-11-10 2016-09-30 13F SEI INVESTMENTS COM 784117103 21,458 -1,239 -5.46 978 -10.44 0.0324
2016-08-12 2016-06-30 13F SEI INVESTMENTS COM 784117103 22,697 1,484 7.00 1,092 19.61 0.0385
2016-05-13 2016-03-31 13F SEI INVESTMENTS COM 784117103 21,213 5,971 39.17 913 14.41 0.0330
2016-02-09 2015-12-31 13F SEI INVESTMENTS COM 784117103 15,242 -6,003 -28.26 798 -22.07 0.0289
2015-11-13 2015-09-30 13F SEI INVESTMENTS COM 784117103 21,245 -18,337 -46.33 1,024 -47.24 0.0385
2015-08-13 2015-06-30 13F SEI INVESTMENTS COM 784117103 39,582 -17,514 -30.67 1,941 -22.92 0.0659
2015-05-14 2015-03-31 13F SEI INVESTMENTS COM 784117103 57,096 25,255 79.32 2,518 97.49 0.0848
2015-02-12 2014-12-31 13F SEI INVESTMENTS COM 784117103 31,841 6,328 24.80 1,275 38.29 0.0440
2014-11-13 2014-09-30 13F SEI INVESTMENTS COM 784117103 25,513 -84 -0.33 922 9.89 0.0308
2014-08-14 2014-06-30 13F SEI INVESTMENTS COM 784117103 25,597 -884 -3.34 839 -5.73 0.0269
2014-05-14 2014-03-31 13F SEI INVESTMENTS COM 784117103 26,481 1,768 7.15 890 3.61 0.0295
2014-02-14 2013-12-31 13F SEI INVESTMENTS COM 784117103 24,713 -3,891 -13.60 859 -2.83 0.0288
2013-11-12 2013-09-30 13F SEI INVESTMENTS COM 784117103 28,604 4,810 20.22 884 30.58 0.0321
2013-08-14 2013-06-30 13F SEI INVESTMENTS COM 784117103 23,794 23,794 677 0.0256
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.