SEI Investments Company
US ˙ NasdaqGS ˙ US7841171033

SecuritySEIC / SEI Investments Company
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
D. E. Shaw & Co., Inc. closes position in SEIC / SEI Investments Company

On November 14, 2025 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 0 shares of SEI Investments Company (US:SEIC) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 145,566 shares of SEI Investments Company. The current value of the position is $0 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)
2025-11-14 2025-09-30 13F SEI INVTS COM 784117103 0 -100.00 0
2025-08-14 2025-06-30 13F SEI INVTS COM 784117103 145,566 145,566 13,081 0.0093
2025-02-14 2024-12-31 13F SEI INVTS COM 784117103 0 -76,987 -100.00 0 -100.00
2024-11-14 2024-09-30 13F SEI INVTS COM 784117103 76,987 21,790 39.48 5,327 49.19 0.0046
2024-08-14 2024-06-30 13F SEI INVTS COM 784117103 55,197 55,197 3,571 0.0033
2024-11-14 2023-12-31 13F/A-1 SEI INVTS COM 784117103 0 -45,425 -100.00 0 -100.00
2024-02-14 2023-12-31 13F SEI INVTS COM 784117103 0 -45,425 0
2023-11-14 2023-09-30 13F SEI INVTS COM 784117103 45,425 45,425 2,736 0.0029
2022-08-15 2022-06-30 13F SEI INVTS COM 784117103 0 -8,505 -100.00 0 -100.00
2022-05-16 2022-03-31 13F SEI INVTS COM 784117103 8,505 -70,634 -89.25 512 -89.38 0.0005
2022-02-14 2021-12-31 13F SEI INVTS COM 784117103 79,139 -38,297 -32.61 4,823 -30.74 0.0040
2021-11-15 2021-09-30 13F SEI INVTS COM 784117103 117,436 102,845 704.85 6,964 670.35 0.0063
2021-08-16 2021-06-30 13F SEI INVTS COM 784117103 14,591 -178,850 -92.46 904 -92.33 0.0008
2021-05-17 2021-03-31 13F SEI INVTS COM 784117103 193,441 31,855 19.71 11,787 26.92 0.0114
2021-02-16 2020-12-31 13F SEI INVTS COM 784117103 161,586 -91,528 -36.16 9,287 -27.66 0.0083
2020-11-16 2020-09-30 13F SEI INVTS COM 784117103 253,114 218,249 625.98 12,838 569.69 0.0131
2020-08-14 2020-06-30 13F SEI INVTS COM 784117103 34,865 -1,151 -3.20 1,917 14.86 0.0023
2020-05-15 2020-03-31 13F SEI INVESTMENTS COM 784117103 36,016 -59,679 -62.36 1,669 -73.36 0.0026
2020-02-14 2019-12-31 13F SEI INVESTMENTS COM 784117103 95,695 -126,910 -57.01 6,266 -52.50 0.0072
2019-11-14 2019-09-30 13F SEI INVESTMENTS COM 784117103 222,605 7,076 3.28 13,191 9.10 0.0162
2019-08-14 2019-06-30 13F SEI INVESTMENTS COM 784117103 215,529 -22,695 -9.53 12,091 -2.86 0.0151
2019-05-15 2019-03-31 13F SEI INVESTMENTS COM 784117103 238,224 60,184 33.80 12,447 51.33 0.0161
2019-02-14 2018-12-31 13F SEI INVESTMENTS COM 784117103 178,040 96,125 117.35 8,225 64.34 0.0113
2018-11-14 2018-09-30 13F SEI INVESTMENTS COM 784117103 81,915 -27,081 -24.85 5,005 -26.55 0.0060
2018-08-14 2018-06-30 13F SEI INVESTMENTS COM 784117103 108,996 85,227 358.56 6,814 282.59 0.0089
2018-05-15 2018-03-31 13F SEI INVESTMENTS COM 784117103 23,769 14,836 166.08 1,781 177.41 0.0024
2018-02-14 2017-12-31 13F SEI INVESTMENTS COM 784117103 8,933 8,933 642 0.0009
2017-11-14 2017-09-30 13F SEI INVESTMENTS COM 784117103 0 -32,091 -100.00 0 -100.00
2017-08-14 2017-06-30 13F SEI INVESTMENTS COM 784117103 32,091 3,567 12.51 1,726 20.03 0.0029
2017-05-15 2017-03-31 13F SEI INVESTMENTS COM 784117103 28,524 22,492 372.88 1,438 382.55 0.0025
2017-02-14 2016-12-31 13F SEI INVESTMENTS COM 784117103 6,032 -41,902 -87.42 298 -86.37 0.0005
2016-11-14 2016-09-30 13F SEI INVESTMENTS COM 784117103 47,934 34,944 269.01 2,186 249.76 0.0039
2016-08-15 2016-06-30 13F SEI INVESTMENTS COM 784117103 12,990 6,798 109.79 625 134.08 0.0012
2016-05-16 2016-03-31 13F SEI INVESTMENTS COM 784117103 6,192 -20,761 -77.03 267 -81.09 0.0005
2016-02-16 2015-12-31 13F SEI INVESTMENTS COM 784117103 26,953 -66,757 -71.24 1,412 -68.75 0.0021
2015-11-16 2015-09-30 13F SEI INVESTMENTS COM 784117103 93,710 93,710 0.00 4,519 0.0067
2015-02-17 2014-12-31 13F SEI INVESTMENTS COM 784117103 0 -44,533 -100.00 0 -100.00
2014-11-14 2014-09-30 13F SEI INVESTMENTS COM 784117103 44,533 -43,756 -49.56 1,610 -45.74 0.0021
2014-05-15 2014-03-31 13F SEI INVESTMENTS COM 784117103 88,289 88,289 773.89 2,967 850.96 0.0042
2014-02-14 2013-12-31 13F SEI INVESTMENTS COM 784117103 0 -10,103 -100.00 0 -100.00
2013-11-20 2013-09-30 13F/A-1 SEI INVESTMENTS COM 784117103 10,103 -90,318 -89.94 312 -89.07 0.0005
2013-11-14 2013-09-30 13F SEI INVESTMENTS COM 784117103 10,103 312
2013-08-14 2013-06-30 13F SEI INVESTMENTS COM 784117103 100,421 100,421 2,855 0.0054
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.