SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionGlobeflex Capital L P
Latest Disclosed Ownership6,502 shares
Latest Disclosed Value $ 510,212
Globeflex Capital L P ownership in SEIC / SEI Investments Company

On May 13, 2026 - Globeflex Capital L P filed a 13F-HR form disclosing ownership of 6,502 shares of SEI Investments Company (MX:SEIC) valued at $510,212 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2025 disclosing 0 shares of SEI Investments Company.

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)
2026-05-13 2026-03-31 13F SEI INVESTMENTS COM 784117103 6,502 6,502 510 0.0772
2025-08-14 2025-06-30 13F SEI INVESTMENTS COM 784117103 0 -1,800 -100.00 0 -100.00
2025-05-12 2025-03-31 13F SEI INVESTMENTS COM 784117103 1,800 0 0.00 140 -6.08 0.0129
2025-02-10 2024-12-31 13F SEI INVESTMENTS COM 784117103 1,800 1,800 148 0.0126
2023-02-10 2022-12-31 13F SEI INVESTMENTS COM 784117103 0 -24,144 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SEI INVESTMENTS COM 784117103 24,144 3,604 17.55 1,184 6.67 0.2035
2022-08-15 2022-06-30 13F SEI INVESTMENTS COM 784117103 20,540 0 0.00 1,110 -10.27 0.2708
2022-05-13 2022-03-31 13F SEI INVESTMENTS COM 784117103 20,540 0 0.00 1,237 -1.20 0.2508
2022-02-10 2021-12-31 13F/A-1 SEI INVESTMENTS COM 784117103 20,540 -31 -0.15 1,252 2.62 0.2564
2022-02-10 2021-12-31 13F SEI INVESTMENTS COM 784117103 20,540 -31 1,252 0.2564
2021-11-12 2021-09-30 13F SEI INVESTMENTS COM 784117103 20,571 0 0.00 1,220 -4.31 0.2663
2021-08-12 2021-06-30 13F SEI INVESTMENTS COM 784117103 20,571 0 0.00 1,275 1.76 0.2290
2021-05-14 2021-03-31 13F SEI INVESTMENTS COM 784117103 20,571 20,540 66,258.06 1,253 62,550.00 0.2283
2021-02-11 2020-12-31 13F SEI INVESTMENTS COM 784117103 31 0 0.00 2 0.00 0.0004
2020-11-13 2020-09-30 13F SEI INVESTMENTS COM 784117103 31 0 0.00 2 0.00 0.0005
2020-08-12 2020-06-30 13F SEI INVESTMENTS COM 784117103 31 0 0.00 2 100.00 0.0005
2020-05-13 2020-03-31 13F SEI INVESTMENTS COM 784117103 31 0 0.00 1 -50.00 0.0003
2020-02-07 2019-12-31 13F SEI INVESTMENTS COM 784117103 31 0 0.00 2 0.00 0.0004
2019-11-13 2019-09-30 13F SEI INVESTMENTS COM 784117103 31 0 0.00 2 0.00 0.0004
2019-08-12 2019-06-30 13F SEI INVESTMENTS COM 784117103 31 31 -99.98 2 -99.97 0.0004
2015-08-05 2015-06-30 13F SEI INVESTMENTS COM 784117103 0 -35,018 -100.00 0 -100.00
2015-05-07 2015-03-31 13F SEI INVESTMENTS COM 784117103 35,018 -27,238 -43.75 1,544 -38.07 0.2942
2015-02-10 2014-12-31 13F SEI INVESTMENTS COM 784117103 62,256 -116,504 -65.17 2,493 -61.43 0.4818
2014-10-15 2014-09-30 13F SEI INVESTMENTS COM 784117103 178,760 173,284 3,164.43 6,464 3,511.17 0.7306
2014-07-18 2014-06-30 13F SEI INVESTMENTS COM 784117103 5,476 -19 -0.35 179 -2.72 0.0195
2014-04-23 2014-03-31 13F SEI INVESTMENTS COM 784117103 5,495 5,400 5,684.21 184 6,033.33 0.0210
2014-02-12 2013-12-31 13F SEI INVESTMENTS COM 784117103 95 0 0.00 3 50.00 0.0004
2013-11-14 2013-09-30 13F SEI INVESTMENTS COM 784117103 95 -10,322 -99.09 2 -99.32 0.0003
2013-08-08 2013-06-30 13F SEI INVESTMENTS COM 784117103 10,417 10,417 296 0.0406
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.