SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionHahn Capital Management Llc
Latest Disclosed Ownership84,374 shares
Latest Disclosed Value $ 6,620,828
Hahn Capital Management Llc reports 17.18% decrease in ownership of SEIC / SEI Investments Company

On May 7, 2026 - Hahn Capital Management Llc filed a 13F-HR form disclosing ownership of 84,374 shares of SEI Investments Company (MX:SEIC) valued at $6,620,828 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 25, 2026 disclosing 101,877 shares of SEI Investments Company. This represents a change in shares of -17.18% 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)
2026-05-07 2026-03-31 13F SEI Investments Equities 784117103 84,374 -17,503 -17.18 6,621 -20.77 4.1599
2026-02-25 2025-12-31 13F SEI Investments Common 784117103 101,877 -6,490 -5.99 8,356 -9.13 4.5061
2025-10-20 2025-09-30 13F SEI Investments Common 784117103 108,367 -4,840 -4.28 9,195 -9.61 4.4058
2025-07-21 2025-06-30 13F SEI Investments Common 784117103 113,207 -1,756 -1.53 10,173 13.98 4.7970
2025-06-06 2025-03-31 13F SEI Investments Common 784117103 114,963 -11,947 -9.41 8,925 -14.74 4.3167
2025-02-05 2024-12-31 13F SEI Investments Common 784117103 126,910 39,991 46.01 10,468 74.07 4.5880
2024-10-23 2024-09-30 13F SEI Investments Common 784117103 86,919 -1,303 -1.48 6,014 5.36 3.8741
2024-08-06 2024-06-30 13F SEI Investments Common 784117103 88,222 21,994 33.21 5,707 19.87 2.7131
2024-04-26 2024-03-31 13F SEI Investments Common 784117103 66,228 -38,678 -36.87 4,762 -28.58 2.8474
2024-01-23 2023-12-31 13F SEI Investments Common 784117103 104,906 -6,668 -5.98 6,667 -0.80 2.6701
2023-10-31 2023-09-30 13F SEI Investments Common 784117103 111,574 -19,240 -14.71 6,720 -13.84 2.7124
2023-07-31 2023-06-30 13F SEI Investments Common 784117103 130,814 -3,053 -2.28 7,799 1.23 2.5525
2023-04-17 2023-03-31 13F SEI Investments Common 784117103 133,867 -25,283 -15.89 7,704 -16.96 2.5101
2023-01-25 2022-12-31 13F SEI Investments Common 784117103 159,150 -3,200 -1.97 9,278 16.51 2.4497
2022-12-06 2022-09-30 13F SEI Investments COM 784117103 162,350 -4,007 -2.41 7,963 -11.38 2.2276
2022-08-17 2022-06-30 13F SEI Investments COM 784117103 166,357 -9,372 -5.33 8,987 -15.07 2.3734
2022-04-18 2022-03-31 13F SEI Investments COM 784117103 175,729 -6,433 -3.53 10,581 -4.68 2.2817
2022-02-25 2021-12-31 13F SEI Investments COM 784117103 182,162 -8,519 -4.47 11,101 -1.83 2.0833
2021-10-26 2021-09-30 13F SEI Investments COM 784117103 190,681 -5,317 -2.71 11,307 -6.90 2.2105
2021-08-17 2021-06-30 13F SEI Investments COM 784117103 195,998 10,582 5.71 12,146 7.51 2.3032
2021-06-18 2021-03-31 13F SEI Investments COM 784117103 185,416 -27,634 -12.97 11,297 -7.73 2.4574
2021-01-28 2020-12-31 13F SEI Investments COM 784117103 213,050 -6,397 -2.92 12,244 10.00 2.5097
2020-10-23 2020-09-30 13F SEI Investments COM 784117103 219,447 -146,335 -40.01 11,130 -44.65 2.8471
2020-07-24 2020-06-30 13F SEI Investments COM 784117103 365,782 -16,825 -4.40 20,111 13.42 3.2427
2020-04-24 2020-03-31 13F SEI Investments COM 784117103 382,607 2,998 0.79 17,730 -28.67 3.2801
2020-01-17 2019-12-31 13F SEI Investments COM 784117103 379,609 -8,265 -2.13 24,857 8.15 3.2029
2019-11-12 2019-09-30 13F SEI Investments COM 784117103 387,874 -4,146 -1.06 22,983 4.51 3.0573
2019-08-20 2019-06-30 13F SEI Investments COM 784117103 392,020 -53,409 -11.99 21,992 -5.50 2.8905
2019-05-17 2019-03-31 13F Roper Industries COM 784117103 445,429 -6,247 -1.38 23,274 11.53 2.8896
2019-02-07 2018-12-31 13F SEI Investments COM 784117103 451,676 -11,555 -2.49 20,867 -26.27 3.0226
2018-11-14 2018-09-30 13F SEI Investments COM 784117103 463,231 -17,600 -3.66 28,303 -5.85 3.2766
2018-08-15 2018-06-30 13F SEI Investments COM 784117103 480,831 -58,670 -10.87 30,062 -25.62 3.4858
2018-05-14 2018-03-31 13F SEI Investments COM 784117103 539,501 -65,055 -10.76 40,414 -6.97 4.2583
2018-02-14 2017-12-31 13F SEI Investments COM 784117103 604,556 -9,886 -1.61 43,443 15.80 4.0901
2017-11-16 2017-09-30 13F SEI Investments COM 784117103 614,442 5,815 0.96 37,518 14.62 3.7080
2017-08-18 2017-06-30 13F SEI Investments COM 784117103 608,627 -73,248 -10.74 32,732 -4.83 3.3986
2017-05-16 2017-03-31 13F SEI Investments COM 784117103 681,875 -11,226 -1.62 34,394 0.53 3.3036
2017-02-15 2016-12-31 13F SEI Investments COM 784117103 693,101 -37,139 -5.09 34,211 5.68 3.3845
2016-11-15 2016-09-30 13F SEI Investments COM 784117103 730,240 -40,846 -5.30 32,372 -12.74 3.2241
2016-08-15 2016-06-30 13F SEI Investments COM 784117103 771,086 -18,673 -2.36 37,097 9.11 3.5567
2016-05-16 2016-03-31 13F/A-1 SEI Investments COM 784117103 789,759 64,056 8.83 33,999 -10.59 3.2196
2016-05-16 2016-03-31 13F SEI Investments COM 784117103 582,163 25,062
2016-02-12 2015-12-31 13F SEI Investments COM 784117103 725,703 -835 -0.11 38,027 8.52 3.8320
2015-11-13 2015-09-30 13F SEI Investments COM 784117103 726,538 19,101 2.70 35,041 1.02 3.4627
2015-08-14 2015-06-30 13F SEI Investments COM 784117103 707,437 -74,792 -9.56 34,686 0.57 3.3426
2015-05-15 2015-03-31 13F SEI Investments COM 784117103 782,229 149,424 23.61 34,488 36.12 3.0033
2015-02-17 2014-12-31 13F SEI Investments COM 784117103 632,805 57,271 9.95 25,338 21.75 2.8827
2014-11-14 2014-09-30 13F SEI Investments COM 784117103 575,534 140,348 32.25 20,811 45.93 2.6239
2014-08-20 2014-06-30 13F SEI Investments COM 784117103 435,186 -380 -0.09 14,261 -2.58 1.8821
2014-05-14 2014-03-31 13F SEI Investments COM 784117103 435,566 -202,928 -31.78 14,639 -33.98 2.0056
2014-02-14 2013-12-31 13F SEI Investments COM 784117103 638,494 -47,856 -6.97 22,175 4.52 3.0769
2013-11-15 2013-09-30 13F SEI Investments COM 784117103 686,350 170,819 33.13 21,215 151,435.71 2.8568
2013-08-13 2013-06-30 13F SEI Investments COM 784117103 515,531 515,531 15 2.8861
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.