SEI 투자 회사
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership23,222 shares
Latest Disclosed Value $ 1,822,231
Quadrant Capital Group Llc reports 32.19% increase in ownership of SEIC / SEI Investments Company

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 23,222 shares of SEI Investments Company (MX:SEIC) valued at $1,822,231 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 17,567 shares of SEI Investments Company. This represents a change in shares of 32.19% 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/A-1 SEI INVTS COM 784117103 23,222 5,655 32.19 1,822 26.53 0.0545
2026-05-11 2026-03-31 13F SEI INVTS COM 784117103 23,222 5,655 49 0.0369
2026-02-12 2025-12-31 13F SEI INVTS COM 784117103 17,567 9,352 113.84 1,441 106.60 0.0435
2025-11-13 2025-09-30 13F SEI INVTS COM 784117103 8,215 220 2.75 697 -2.92 0.0227
2025-08-13 2025-06-30 13F SEI INVTS COM 784117103 7,995 3,966 98.44 718 130.13 0.0259
2025-05-13 2025-03-31 13F SEI INVTS COM 784117103 4,029 2,563 174.83 313 160.00 0.0116
2025-02-13 2024-12-31 13F SEI INVTS COM 784117103 1,466 0 0.00 121 18.81 0.0083
2024-11-12 2024-09-30 13F SEI INVTS COM 784117103 1,466 -232 -13.66 101 -7.34 0.0070
2024-08-12 2024-06-30 13F SEI INVTS COM 784117103 1,698 -258 -13.19 110 -22.14 0.0082
2024-05-15 2024-03-31 13F SEI INVTS COM 784117103 1,956 0 0.00 141 12.90 0.0111
2024-02-08 2023-12-31 13F SEI INVTS COM 784117103 1,956 316 19.27 124 26.53 0.0107
2023-11-14 2023-09-30 13F SEI INVTS COM 784117103 1,640 170 11.56 99 12.64 0.0099
2023-08-10 2023-06-30 13F SEI INVTS COM 784117103 1,470 160 12.21 88 16.00 0.0087
2023-05-11 2023-03-31 13F SEI INVTS COM 784117103 1,310 130 11.02 75 10.29 0.0078
2023-02-13 2022-12-31 13F SEI INVTS COM 784117103 1,180 576 95.36 69 126.67 0.0078
2022-11-10 2022-09-30 13F SEI INVTS COM 784117103 604 20 3.42 30 -6.25 0.0040
2022-08-09 2022-06-30 13F SEI INVTS COM 784117103 584 -259 -30.72 32 -37.25 0.0043
2022-05-06 2022-03-31 13F SEI INVTS COM 784117103 843 431 104.61 51 104.00 0.0062
2022-02-01 2021-12-31 13F SEI INVTS COM 784117103 412 -11 -2.60 25 0.00 0.0030
2021-11-12 2021-09-30 13F SEI INVTS COM 784117103 423 90 27.03 25 19.05 0.0035
2021-08-09 2021-06-30 13F SEI INVTS COM 784117103 333 36 12.12 21 16.67 0.0030
2021-05-12 2021-03-31 13F SEI INVTS COM 784117103 297 0 0.00 18 5.88 0.0029
2021-02-16 2020-12-31 13F SEI INVTS COM 784117103 297 -48 -13.91 17 0.00 0.0032
2020-11-13 2020-09-30 13F SEI INVTS COM 784117103 345 -152 -30.58 17 -37.04 0.0037
2020-08-13 2020-06-30 13F SEI INVTS COM 784117103 497 188 60.84 27 68.75 0.0060
2020-05-15 2020-03-31 13F SEI Investments Com 784117103 309 233 306.58 16 300.00 0.0027
2020-03-19 2019-12-31 13F/A-1 SEI Investments Com 784117103 76 21 38.18 4 33.33 0.0005
2020-02-03 2019-12-31 13F SEI Investments Com 784117103 76 21 4 13.5165
2019-10-24 2019-09-30 13F SEI Investments COM 784117103 55 0 0.00 3 0.00 0.0005
2019-07-24 2019-06-30 13F SEI Investments COM 784117103 55 0 0.00 3 200.00 0.0005
2019-04-29 2019-03-31 13F SEI Investments COM 784117103 55 -108 -66.26 1 -80.00 0.0002
2019-01-17 2018-12-31 13F SEI Investments COM 784117103 163 0 0.00 5 -44.44 0.0013
2018-10-29 2018-09-30 13F SEI Investments COM 784117103 163 0 0.00 9 0.00 0.0026
2018-08-08 2018-06-30 13F SEI Investments COM 784117103 163 0 0.00 9 -10.00 0.0032
2018-05-10 2018-03-31 13F SEI Investments COM 784117103 163 0 0.00 10 11.11 0.0036
2018-01-31 2017-12-31 13F SEI Investments COM 784117103 163 0 0.00 9 0.00 0.0036
2017-10-13 2017-09-30 13F SEI Investments COM 784117103 163 39 31.45 9 125.00 0.0037
2017-08-14 2017-06-30 13F SEI Investments COM 784117103 124 0 0.00 4 0.00 0.0018
2017-04-10 2017-03-31 13F SEI Investments COM 784117103 124 69 125.45 4 300.00 0.0018
2017-01-11 2016-12-31 13F SEI Investments COM 784117103 55 0 0.00 1 0.00 0.0005
2016-10-25 2016-09-30 13F SEI Investments COM 784117103 55 -11 -16.67 1 -50.00 0.0007
2016-07-28 2016-06-30 13F SEI Investments COM 784117103 66 55 500.00 2 0.0014
2016-04-27 2016-03-31 13F SEI Investments COM 784117103 11 11 0 0.0000
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.