Asset Management One Co., Ltd. reports 95.69% decrease in ownership of SI3 / SEI Investments Company

SEI投資公司

DE ˙ DB ˙ US7841171033

€74.00 0.00 (0.00%)

2026-06-01
分享價格

Security	DE:SI3 / SEI Investments Company
Institution	Asset Management One Co., Ltd.
Latest Disclosed Ownership	602 shares
Latest Disclosed Value	$ 47,239

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 602 shares of SEI Investments Company (DE:SI3) valued at $39,732 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 13,975 shares of SEI Investments Company. This represents a change in shares of -95.69% during the quarter. The current value of the position is $44,548 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-08	2026-03-31	13F	SEI INVTS	COM	784117103	602	-13,373	-95.69	47	-96.00	0.0001
2026-01-27	2025-12-31	13F	SEI INVTS	COM	784117103	13,975	2,471	21.48	1,175	20.39	0.0033
2025-10-22	2025-09-30	13F	SEI INVTS	COM	784117103	11,504	-703	-5.76	976	-10.95	0.0028
2025-07-31	2025-06-30	13F	SEI INVTS	COM	784117103	12,207	-38,870	-76.10	1,097	-72.36	0.0034
2025-04-23	2025-03-31	13F	SEI INVTS	COM	784117103	51,077	6,612	14.87	3,965	6.99	0.0137
2025-01-30	2024-12-31	13F	SEI INVTS	COM	784117103	44,465	-27,377	-38.11	3,707	-25.43	0.0127
2024-10-30	2024-09-30	13F	SEI INVTS	COM	784117103	71,842	14,757	25.85	4,971	34.62	0.0177
2024-07-18	2024-06-30	13F	SEI INVTS	COM	784117103	57,085	-503	-0.87	3,693	-10.82	0.0141
2024-05-02	2024-03-31	13F	SEI INVTS	COM	784117103	57,588	-11,601	-16.77	4,141	-6.38	0.0160
2024-01-24	2023-12-31	13F	SEI INVTS	COM	784117103	69,189	6,475	10.32	4,423	17.08	0.0178
2023-10-19	2023-09-30	13F	SEI INVTS	COM	784117103	62,714	19,629	45.56	3,777	47.08	0.0168
2023-07-31	2023-06-30	13F	SEI INVTS	COM	784117103	43,085	-4,117	-8.72	2,569	-5.45	0.0109
2023-04-25	2023-03-31	13F	SEI INVTS	COM	784117103	47,202	-905	-1.88	2,716	-3.89	0.0123
2023-02-06	2022-12-31	13F	SEI INVTS	COM	784117103	48,107	-1,527	-3.08	2,826	16.11	0.0138
2022-11-04	2022-09-30	13F	SEI INVTS	COM	784117103	49,634	-242	-0.49	2,434	-9.65	0.0124
2022-07-29	2022-06-30	13F	SEI INVTS	COM	784117103	49,876	-1,159	-2.27	2,694	-12.30	0.0127
2022-05-13	2022-03-31	13F	SEI INVTS	COM	784117103	51,035	-1,559	-2.96	3,072	-5.24	0.0120
2022-02-09	2021-12-31	13F	SEI INVTS	COM	784117103	52,594	-5,810	-9.95	3,242	-6.38	0.0113
2021-11-02	2021-09-30	13F	SEI INVTS	COM	784117103	58,404	2,114	3.76	3,463	-0.72	0.0133
2021-08-03	2021-06-30	13F	SEI INVTS	COM	784117103	56,290	1,461	2.66	3,488	4.43	0.0130
2021-05-14	2021-03-31	13F	SEI INVTS	COM	784117103	54,829	-5,194	-8.65	3,340	-1.30	0.0133
2021-02-12	2020-12-31	13F	SEI INVTS	COM	784117103	60,023	-15,567	-20.59	3,384	-11.74	0.0139
2020-11-13	2020-09-30	13F	SEI INVTS	COM	784117103	75,590	-7,358	-8.87	3,834	-15.90	0.0176
2020-08-14	2020-06-30	13F	SEI INVTS	COM	784117103	82,948	18,343	28.39	4,559	52.32	0.0224
2020-05-14	2020-03-31	13F	SEI INVESTMENTS	COM	784117103	64,605	-3,190	-4.71	2,993	-32.57	0.0175
2020-02-14	2019-12-31	13F	SEI INVESTMENTS	COM	784117103	67,795	226	0.33	4,439	10.95	0.0200
2019-11-14	2019-09-30	13F	SEI INVESTMENTS	COM	784117103	67,569	-11,115	-14.13	4,001	-9.36	0.0193
2019-08-14	2019-06-30	13F	SEI INVESTMENTS	COM	784117103	78,684	10,258	14.99	4,414	23.50	0.0217
2019-05-15	2019-03-31	13F	SEI INVESTMENTS	COM	784117103	68,426	-202,464	-74.74	3,574	-71.32	0.0193
2019-02-13	2018-12-31	13F	SEI INVESTMENTS	COM	784117103	270,890	-2,703	-0.99	12,463	-25.55	0.0297
2018-11-14	2018-09-30	13F	SEI INVESTMENTS	COM	784117103	273,593	339	0.12	16,739	-2.13	0.0344
2018-08-14	2018-06-30	13F	SEI INVESTMENTS	COM	784117103	273,254	376	0.14	17,104	-16.33	0.0374
2018-05-14	2018-03-31	13F	SEI INVESTMENTS	COM	784117103	272,878	22,856	9.14	20,442	13.71	0.0460
2018-02-14	2017-12-31	13F	SEI INVESTMENTS	COM	784117103	250,022	37,629	17.72	17,978	38.56	0.0397
2017-11-14	2017-09-30	13F	SEI INVESTMENTS	COM	784117103	212,393	-13,133	-5.82	12,975	6.98	0.0305
2017-08-14	2017-06-30	13F	SEI INVESTMENTS	COM	784117103	225,526	-3,976	-1.73	12,129	4.79	0.0310
2017-05-11	2017-03-31	13F	SEI INVESTMENTS	COM	784117103	229,502	8,527	3.86	11,575	6.11	0.0304
2017-05-02	2016-12-31	13F/A-1	SEI INVESTMENTS	COM	784117103	220,975	206,146	1,390.15	10,909	1,530.64	0.0279
2017-02-13	2016-12-31	13F	SEI INVESTMENTS	COM	784117103	220,975			10,909
2016-11-07	2016-09-30	13F	SEI INVESTMENTS	Com	784117103	14,829	-35,142	-70.32	669	-71.96	0.0099
2016-08-03	2016-06-30	13F	SEI INVESTMENTS	Com	784117103	49,971	-4,931	-8.98	2,386	1.14	0.0358
2016-05-05	2016-03-31	13F	SEI INVESTMENTS	Com	784117103	54,902	5,456	11.03	2,359	-9.09	0.0344
2016-01-28	2015-12-31	13F	SEI INVESTMENTS	Com	784117103	49,446	35,580	256.60	2,595	297.40	0.0387
2015-11-12	2015-09-30	13F	SEI INVESTMENTS	Com	784117103	13,866	-65,320	-82.49	653	-83.16	0.0099
2015-08-06	2015-06-30	13F	SEI INVESTMENTS	Com	784117103	79,186	-1,049	-1.31	3,878	9.58	0.0537
2015-05-11	2015-03-31	13F	SEI INVESTMENTS	Com	784117103	80,235	2,369	3.04	3,539	13.36	0.0437
2015-02-09	2014-12-31	13F	SEI INVESTMENTS	Com	784117103	77,866	68,241	709.00	3,122	794.56	0.0405
2014-11-05	2014-09-30	13F	SEI INVESTMENTS	Com	784117103	9,625	0	0.00	349	11.50	0.0048
2014-08-12	2014-06-30	13F	SEI INVESTMENTS	Com	784117103	9,625	-11,121	-53.61	313	-55.09	0.0047
2014-05-05	2014-03-31	13F	SEI INVESTMENTS	Com	784117103	20,746	0	0.00	697	-3.19	0.0110
2014-02-05	2013-12-31	13F/A-1	SEI INVESTMENTS	COM	784117103	20,746	-120	-0.58	720	11.80	0.0112
2014-01-29	2013-12-31	13F	SEI INVESTMENTS	COM	784117103	20,746			720
2014-02-05	2013-09-30	13F/A-1	SEI INVESTMENTS	COM	784117103	20,866	2,764	15.27	644	25.05	0.0097
2013-11-06	2013-09-30	13F	SEI INVESTMENTS	Com	784117103	20,866			644
2014-02-12	2013-06-30	13F/A-1	SEI INVESTMENTS	COM	784117103	18,102	18,102		515		0.0084
2013-08-05	2013-06-30	13F	SEI INVESTMENTS	Com	784117103	18,102			515

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.