SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionGoldman Sachs Group Inc
Latest Disclosed Ownership324,129 shares
Latest Disclosed Value $ 25,434,436
Goldman Sachs Group Inc ownership in SEIC / SEI Investments Company

On May 15, 2026 - Goldman Sachs Group Inc filed a 13F-HR form disclosing ownership of 324,129 shares of SEI Investments Company (MX:SEIC) valued at $25,434,436 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 319,208 shares of SEI Investments Company. This represents a change in shares of 1.54% during the quarter.

Goldman Sachs Group Inc has a history of taking positions in derivatives of the underlying security (SEIC) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:SEIC / SEI Investments Company Historical Put/Call Ratio
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 CMN 784117103 324,129 4,921 1.54 25,434 -2.85 0.0007
2026-02-10 2025-12-31 13F SEI INVTS CMN 784117103 319,208 78,858 32.81 26,181 28.38 0.0032
2025-11-14 2025-09-30 13F SEI INVTS CMN 784117103 240,350 -183,544 -43.30 20,394 -46.46 0.0025
2025-08-14 2025-06-30 13F SEI INVTS CMN 784117103 423,894 204,195 92.94 38,091 123.34 0.0052
2025-06-27 2025-03-31 13F/A-2 SEI INVTS CMN 784117103 219,699 -2,785 -1.25 17,055 -7.06 0.0028
2025-05-16 2025-03-31 13F/A-1 SEI INVTS CMN 784117103 219,699 -2,785 17,055 0.0028
2025-05-09 2025-03-31 13F SEI INVTS CMN 784117103 219,699 -2,785 17,055 0.0005
2025-02-11 2024-12-31 13F SEI INVTS CMN 784117103 222,484 -121,842 -35.39 18,350 -22.97 0.0029
2024-11-14 2024-09-30 13F SEI INVTS CMN 784117103 344,326 82,563 31.54 23,824 40.69 0.0038
2024-08-13 2024-06-30 13F SEI INVTS CMN 784117103 261,763 40,662 18.39 16,933 6.52 0.0029
2024-05-15 2024-03-31 13F SEI INVTS CMN 784117103 221,101 -21,020 -8.68 15,897 3.32 0.0028
2024-05-14 2023-12-31 13F/A-2 SEI INVTS CMN 784117103 242,121 -126,424 -34.30 15,387 -30.68 0.0028
2024-03-01 2023-12-31 13F/A-1 SEI INVTS CMN 784117103 242,121 15,387
2024-02-13 2023-12-31 13F SEI INVTS CMN 784117103 242,121 -126,424 15,387 0.0007
2024-05-15 2023-09-30 13F/A-1 SEI INVTS CMN 784117103 368,545 31,702 9.41 22,197 10.53 0.0047
2023-11-14 2023-09-30 13F SEI INVTS CMN 784117103 368,545 31,702 22,197 0.0045
2024-05-14 2023-06-30 13F/A-1 SEI INVTS CMN 784117103 336,843 67,909 25.25 20,083 29.75 0.0043
2023-08-15 2023-06-30 13F SEI INVTS CMN 784117103 336,843 67,909 20,083 0.0040
2024-05-14 2023-03-31 13F/A-1 SEI INVTS CMN 784117103 268,934 -244,437 -47.61 15,477 -48.29 0.0036
2023-05-11 2023-03-31 13F SEI INVTS CMN 784117103 268,934 -244,437 15,477 0.0033
2024-05-14 2022-12-31 13F/A-1 SEI INVTS CMN 784117103 513,371 10,627 2.11 29,930 124,604.17 0.0073
2023-02-13 2022-12-31 13F SEI INVTS CMN 784117103 513,371 10,627 29,930 0.0067
2024-05-14 2022-09-30 13F/A-1 SEI INVTS CMN 784117103 502,744 -91,631 -15.42 25 -25.00 0.0062
2022-11-14 2022-09-30 13F SEI INVTS CMN 784117103 502,744 -91,631 24,660 0.0057
2024-05-14 2022-06-30 13F/A-2 SEI INVTS CMN 784117103 594,375 -80,937 -11.99 32 -99.92 0.0080
2022-08-18 2022-06-30 13F/A-1 SEI INVTS CMN 784117103 594,375 -80,937 32,108 0.0073
2022-08-15 2022-06-30 13F SEI INVTS CMN 784117103 594,375 -80,937 32,108 0.0022
2022-05-16 2022-03-31 13F SEI INVTS CMN 784117103 675,312 -79,221 -10.50 40,661 -11.57 0.0085
2022-02-17 2021-12-31 13F/A-1 SEI INVTS CMN 784117103 754,533 126,519 20.15 45,981 23.47 0.0091
2022-02-14 2021-12-31 13F SEI INVTS CMN 784117103 754,533 126,519 45,981 0.0026
2022-01-20 2021-09-30 13F/A-1 SEI INVTS CMN 784117103 628,014 136,343 27.73 37,241 22.23 0.0079
2021-11-10 2021-09-30 13F SEI INVTS CMN 784117103 628,014 136,343 37,241 0.0023
2021-08-13 2021-06-30 13F SEI INVTS CMN 784117103 491,671 64,382 15.07 30,469 17.03 0.0068
2021-05-17 2021-03-31 13F SEI INVTS CMN 784117103 427,289 11,373 2.73 26,035 8.92 0.0066
2021-02-12 2020-12-31 13F SEI INVTS CMN 784117103 415,916 -80,321 -16.19 23,902 -5.03 0.0062
2020-11-13 2020-09-30 13F SEI INVTS CMN 784117103 496,237 -51,535 -9.41 25,169 -16.43 0.0071
2020-08-12 2020-06-30 13F SEI INVTS CMN 784117103 547,772 -89,294 -14.02 30,116 2.01 0.0091
2020-05-15 2020-03-31 13F SEI INVESTMENTS CMN 784117103 637,066 -149,944 -19.05 29,522 -42.71 0.0104
2020-02-14 2019-12-31 13F SEI INVESTMENTS CMN 784117103 787,010 31,889 4.22 51,534 15.18 0.0131
2019-11-14 2019-09-30 13F SEI INVESTMENTS CMN 784117103 755,121 59,987 8.63 44,744 14.74 0.0129
2019-08-14 2019-06-30 13F SEI INVESTMENTS CMN 784117103 695,134 8,025 1.17 38,997 8.62 0.0112
2019-05-15 2019-03-31 13F SEI INVESTMENTS CMN 784117103 687,109 11,112 1.64 35,901 14.95 0.0108
2019-02-14 2018-12-31 13F SEI INVESTMENTS CMN 784117103 675,997 -555,002 -45.09 31,231 -58.48 0.0100
2018-11-14 2018-09-30 13F SEI INVESTMENTS CMN 784117103 1,230,999 -126,860 -9.34 75,214 -11.40 0.0194
2018-08-14 2018-06-30 13F SEI INVESTMENTS CMN 784117103 1,357,859 -238,254 -14.93 84,894 -29.00 0.0230
2018-05-15 2018-03-31 13F SEI INVESTMENTS CMN 784117103 1,596,113 771,151 93.48 119,566 101.69 0.0306
2018-02-14 2017-12-31 13F SEI INVESTMENTS CMN 784117103 824,962 -105,939 -11.38 59,282 4.30 0.0142
2017-11-14 2017-09-30 13F SEI INVESTMENTS CMN 784117103 930,901 89,886 10.69 56,840 25.67 0.0139
2017-08-14 2017-06-30 13F SEI INVESTMENTS CMN 784117103 841,015 -46,722 -5.26 45,230 1.01 0.0117
2017-05-18 2017-03-31 13F/A-1 SEI INVESTMENTS CMN 784117103 887,737 -92,725 -9.46 44,777 -7.48 0.0121
2017-05-15 2017-03-31 13F SEI INVESTMENTS CMN 784117103 887,737 44,777
2017-02-14 2016-12-31 13F SEI INVESTMENTS CMN 784117103 980,462 -240,951 -19.73 48,395 -13.13 0.0137
2016-11-14 2016-09-30 13F SEI INVESTMENTS CMN 784117103 1,221,413 -569,376 -31.79 55,708 -35.34 0.0169
2016-08-15 2016-06-30 13F SEI INVESTMENTS CMN 784117103 1,790,789 -78,354 -4.19 86,154 7.07 0.0281
2016-05-13 2016-03-31 13F SEI INVESTMENTS CMN 784117103 1,869,143 586,588 45.74 80,467 19.73 0.0265
2016-02-16 2015-12-31 13F SEI INVESTMENTS CMN 784117103 1,282,555 257,013 25.06 67,206 35.87 0.0211
2015-11-13 2015-09-30 13F SEI INVESTMENTS CMN 784117103 1,025,542 377,427 58.23 49,462 55.65 0.0167
2015-08-14 2015-06-30 13F SEI INVESTMENTS CMN 784117103 648,115 132,517 25.70 31,777 39.79 0.0099
2015-05-15 2015-03-31 13F SEI INVESTMENTS CMN 784117103 515,598 15,100 3.02 22,732 13.43 0.0073
2015-02-13 2014-12-31 13F SEI INVESTMENTS CMN 784117103 500,498 143,748 40.29 20,040 55.35 0.0063
2014-11-14 2014-09-30 13F SEI INVESTMENTS CMN 784117103 356,750 -123,370 -25.70 12,900 -18.01 0.0041
2014-08-14 2014-06-30 13F SEI INVESTMENTS CMN 784117103 480,120 -385,401 -44.53 15,734 -45.91 0.0049
2014-05-15 2014-03-31 13F SEI INVESTMENTS CMN 784117103 865,521 -332,099 -27.73 29,089 -30.06 0.0095
2014-02-14 2013-12-31 13F SEI INVESTMENTS CMN 784117103 1,197,620 56,591 4.96 41,594 17.93 0.0137
2013-11-14 2013-09-30 13F SEI INVESTMENTS CMN 784117103 1,141,029 165,164 16.92 35,269 27.12 0.0130
2013-08-14 2013-06-30 13F SEI INVESTMENTS CMN 784117103 975,865 88,189 9.93 27,744 33.91 0.0107
2013-06-14 2012-12-31 13F/A-1 SEI INVESTMENTS CMN 784117103 887,676 -147,885 -14.28 20,719 -6.68 0.0086
2013-06-14 2012-09-30 13F/A-2 SEI INVESTMENTS CMN 784117103 1,035,561 -348,039 -25.15 22,202 -19.32 0.0089
2013-06-14 2012-06-30 13F/A-2 SEI INVESTMENTS CMN 784117103 1,383,600 61,944 4.69 27,519 0.64 0.0123
2013-06-14 2012-03-31 13F/A-1 SEI INVESTMENTS CMN 784117103 1,321,656 1,321,656 27,345 0.0128
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2016-08-15 2016-06-30 13F SEI INVESTMENTS CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-13 2016-03-31 13F SEI INVESTMENTS CMN Call 2,000 0.00 86 -18.10 n/a n/a n/a
2016-02-16 2015-12-31 13F SEI INVESTMENTS CMN Call 2,000 -23.08 105 -16.00 n/a n/a n/a
2015-11-13 2015-09-30 13F SEI INVESTMENTS CMN Call 2,600 125 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2016-05-13 2016-03-31 13F SEI INVESTMENTS CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F SEI INVESTMENTS CMN Put 1,800 0.00 94 8.05 n/a n/a n/a
2015-11-13 2015-09-30 13F SEI INVESTMENTS CMN Put 1,800 -14.29 87 -15.53 n/a n/a n/a
2015-08-14 2015-06-30 13F SEI INVESTMENTS CMN Put 2,100 103 n/a n/a n/a
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.