SEI Investments Company
DE ˙ DB ˙ US7841171033
73,00 € 0,00 (0,00%)
2026-06-04
AKTIENPREIS
SecurityDE:SI3 / SEI Investments Company
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership42,056 shares
Latest Disclosed Value $ 3,300,134
Holocene Advisors, LP reports 1.12% decrease in ownership of SI3 / SEI Investments Company

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 42,056 shares of SEI Investments Company (DE:SI3) valued at $2,775,696 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,533 shares of SEI Investments Company. This represents a change in shares of -1.12% during the quarter. The current value of the position is $3,070,088 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)
2026-05-15 2026-03-31 13F SEI INVTS COM 784117103 42,056 -477 -1.12 3,300 -5.39 0.0080
2026-02-17 2025-12-31 13F SEI INVTS COM 784117103 42,533 -6,630 -13.49 3,489 -16.37 0.0073
2025-11-14 2025-09-30 13F SEI INVTS COM 784117103 49,163 49,163 4,171 0.0095
2025-08-14 2025-06-30 13F SEI INVTS COM 784117103 0 -106,626 -100.00 0 -100.00
2025-05-15 2025-03-31 13F SEI INVTS COM 784117103 106,626 31,499 41.93 8,277 33.59 0.0241
2025-02-14 2024-12-31 13F SEI INVTS COM 784117103 75,127 4,991 7.12 6,196 27.70 0.0198
2024-11-14 2024-09-30 13F SEI INVTS COM 784117103 70,136 10,394 17.40 4,853 25.57 0.0196
2024-08-14 2024-06-30 13F SEI INVTS COM 784117103 59,742 -12,232 -17.00 3,865 -25.32 0.0161
2024-05-15 2024-03-31 13F SEI INVTS COM 784117103 71,974 16,928 30.75 5,175 47.91 0.0190
2024-02-14 2023-12-31 13F SEI INVTS COM 784117103 55,046 38,292 228.55 3,498 246.68 0.0136
2023-11-14 2023-09-30 13F SEI INVTS COM 784117103 16,754 16,754 1,009 0.0044
2023-02-14 2022-12-31 13F SEI INVTS COM 784117103 0 -41,813 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SEI INVTS COM 784117103 41,813 25,048 149.41 2,051 126.38 0.0131
2022-08-15 2022-06-30 13F SEI INVTS COM 784117103 16,765 -76,717 -82.07 906 -83.90 0.0055
2022-05-16 2022-03-31 13F SEI INVTS COM 784117103 93,482 22,562 31.81 5,629 30.24 0.0293
2022-02-14 2021-12-31 13F SEI INVTS COM 784117103 70,920 -5,046 -6.64 4,322 -4.06 0.0225
2021-11-15 2021-09-30 13F SEI INVTS COM 784117103 75,966 -14,897 -16.40 4,505 -20.00 0.0245
2021-08-16 2021-06-30 13F SEI INVTS COM 784117103 90,863 -1,459 -1.58 5,631 0.11 0.0318
2021-05-17 2021-03-31 13F SEI INVTS COM 784117103 92,322 29,967 48.06 5,625 56.95 0.0353
2021-02-16 2020-12-31 13F SEI INVTS COM 784117103 62,355 33,105 113.18 3,584 141.51 0.0226
2020-11-16 2020-09-30 13F SEI INVTS COM 784117103 29,250 29,250 1,484 0.0113
2020-08-14 2020-06-30 13F SEI INVESTMENTS COM 784117103 0 -8,325 -100.00 0 -100.00
2020-05-15 2020-03-31 13F SEI INVESTMENTS COM 784117103 8,325 -5,967 -41.75 386 -58.76 0.0041
2020-02-14 2019-12-31 13F SEI INVESTMENTS COM 784117103 14,292 3,206 28.92 936 42.47 0.0084
2019-11-14 2019-09-30 13F SEI INVESTMENTS COM 784117103 11,086 -28,647 -72.10 657 -70.52 0.0068
2019-08-14 2019-06-30 13F SEI INVESTMENTS COM 784117103 39,733 7,218 22.20 2,229 31.19 0.0284
2019-05-15 2019-03-31 13F SEI INVESTMENTS COM 784117103 32,515 32,515 1,699 0.0260
2019-02-14 2018-12-31 13F SEI INVESTMENTS COM 784117103 0 -16,843 -100.00 0 -100.00
2018-11-14 2018-09-30 13F SEI INVESTMENTS COM 784117103 16,843 9,270 122.41 1,029 117.55 0.0166
2018-08-14 2018-06-30 13F SEI INVESTMENTS COM 784117103 7,573 7,573 473 0.0101
2018-05-15 2018-03-31 13F SEI INVESTMENTS COM 784117103 0 -10,838 -100.00 0 -100.00
2018-02-14 2017-12-31 13F SEI INVESTMENTS COM 784117103 10,838 10,838 779 0.0197
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.