SEI Investments Company
MX ˙ BMV ˙ US7841171033
SecurityMX:SEIC / SEI Investments Company
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership83,464 shares
Latest Disclosed Value $ 6,565,760
Hsbc Holdings Plc ownership in SEIC / SEI Investments Company

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 83,464 shares of SEI Investments Company (MX:SEIC) valued at $6,565,760 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 180,716 shares of SEI Investments Company. This represents a change in shares of -53.81% during the quarter.

Hsbc Holdings Plc 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)
2026-04-30 2026-03-31 13F SEI INVTS COM 784117103 83,464 -97,252 -53.81 6,566 -55.92 0.0005
2026-03-20 2025-12-31 13F/A-1 SEI INVTS COM 784117103 180,716 117,400 185.42 14,895 178.57 0.0008
2026-03-06 2025-12-31 13F SEI INVTS COM 784117103 180,716 117,400 185.42 14,895 178.57 0.0007
2025-11-13 2025-09-30 13F SEI INVTS COM 784117103 63,316 -3,245 -4.88 5,348 -10.44 0.0004
2025-08-13 2025-06-30 13F SEI INVTS COM 784117103 66,561 -283,953 -81.01 5,971 -78.05 0.0036
2025-05-14 2025-03-31 13F SEI INVTS COM 784117103 350,514 -13,305 -3.66 27,200 -9.42 0.0168
2025-02-14 2024-12-31 13F SEI INVTS COM 784117103 363,819 -38,830 -9.64 30,027 7.84 0.0175
2024-11-14 2024-09-30 13F SEI INVTS COM 784117103 402,649 55,586 16.02 27,845 24.00 0.0162
2024-08-12 2024-06-30 13F SEI INVTS COM 784117103 347,063 -32,545 -8.57 22,456 -17.68 0.0137
2024-05-15 2024-03-31 13F SEI INVTS COM 784117103 379,608 -171,866 -31.16 27,279 -22.17 0.0185
2024-02-12 2023-12-31 13F SEI INVTS COM 784117103 551,474 4,212 0.77 35,049 6.22 0.0306
2023-11-13 2023-09-30 13F SEI INVTS COM 784117103 547,262 -6,835 -1.23 32,997 -0.09 0.0343
2023-08-11 2023-06-30 13F SEI INVTS COM 784117103 554,097 321,780 138.51 33,027 147.21 0.0336
2023-05-15 2023-03-31 13F SEI INVTS COM 784117103 232,317 -15,561 -6.28 13,361 -7.45 0.0160
2023-02-14 2022-12-31 13F SEI INVTS COM 784117103 247,878 195,037 369.10 14,436 453.07 0.0166
2022-11-14 2022-09-30 13F SEI INVTS COM 784117103 52,841 -7,562 -12.52 2,610 -20.40 0.0043
2022-08-11 2022-06-30 13F SEI INVTS COM 784117103 60,403 -108,186 -64.17 3,279 -67.75 0.0046
2022-05-16 2022-03-31 13F SEI INVTS COM 784117103 168,589 -31,353 -15.68 10,168 -16.61 0.0124
2022-02-11 2021-12-31 13F SEI INVTS COM 784117103 199,942 1,414 0.71 12,194 3.54 0.0113
2021-11-12 2021-09-30 13F SEI INVTS COM 784117103 198,528 117,969 146.44 11,777 135.73 0.0119
2021-08-13 2021-06-30 13F SEI INVTS COM 784117103 80,559 22,041 37.67 4,996 39.75 0.0053
2021-05-14 2021-03-31 13F SEI INVTS COM 784117103 58,518 -26,719 -31.35 3,575 -26.71 0.0042
2021-02-25 2020-12-31 13F/A-1 SEI INVTS COM 784117103 85,237 -169,858 -66.59 4,878 -62.38 0.0065
2021-02-12 2020-12-31 13F SEI INVTS COM 784117103 85,237 -169,858 4,878 1,158.2165
2020-11-12 2020-09-30 13F SEI INVTS COM 784117103 255,095 -11,260 -4.23 12,968 -11.44 0.0207
2020-08-14 2020-06-30 13F SEI INVTS COM 784117103 266,355 9,265 3.60 14,644 22.58 0.0278
2020-05-15 2020-03-31 13F SEI INVESTMENTS COM 784117103 257,090 19,259 8.10 11,946 -23.16 0.0277
2020-02-14 2019-12-31 13F SEI INVESTMENTS COM 784117103 237,831 94,160 65.54 15,547 82.63 0.0270
2019-11-14 2019-09-30 13F SEI INVESTMENTS COM 784117103 143,671 29,674 26.03 8,513 33.14 0.0159
2019-08-13 2019-06-30 13F SEI INVESTMENTS COM 784117103 113,997 43,697 62.16 6,394 74.03 0.0121
2019-05-15 2019-03-31 13F SEI INVESTMENTS COM 784117103 70,300 -30,972 -30.58 3,674 -21.39 0.0067
2019-02-13 2018-12-31 13F SEI INVESTMENTS COM 784117103 101,272 30,165 42.42 4,674 7.57 0.0086
2018-11-13 2018-09-30 13F SEI INVESTMENTS COM 784117103 71,107 13,406 23.23 4,345 20.43 0.0070
2018-08-10 2018-06-30 13F SEI INVESTMENTS COM 784117103 57,701 -56,325 -49.40 3,608 -57.76 0.0064
2018-05-11 2018-03-31 13F SEI INVESTMENTS COM 784117103 114,026 10,738 10.40 8,542 15.09 0.0127
2018-02-14 2017-12-31 13F SEI INVESTMENTS COM 784117103 103,288 15,098 17.12 7,422 37.83 0.0107
2017-11-14 2017-09-30 13F SEI INVESTMENTS COM 784117103 88,190 12,971 17.24 5,385 33.09 0.0086
2017-08-14 2017-06-30 13F SEI INVESTMENTS COM 784117103 75,219 1,009 1.36 4,046 8.15 0.0074
2017-05-15 2017-03-31 13F SEI INVESTMENTS COM 784117103 74,210 13,343 21.92 3,741 24.53 0.0078
2017-02-09 2016-12-31 13F SEI INVESTMENTS COM 784117103 60,867 -2,156 -3.42 3,004 4.67 0.0070
2016-11-14 2016-09-30 13F SEI INVESTMENTS COM 784117103 63,023 -825 -1.29 2,870 -6.15 0.0071
2016-08-12 2016-06-30 13F SEI INVESTMENTS COM 784117103 63,848 1,027 1.63 3,058 13.18 0.0084
2016-05-13 2016-03-31 13F SEI INVESTMENTS COM 784117103 62,821 -36,121 -36.51 2,702 -48.06 0.0076
2016-02-12 2015-12-31 13F SEI INVESTMENTS COM 784117103 98,942 -7,101 -6.70 5,202 3.11 0.0125
2015-11-12 2015-09-30 13F SEI INVESTMENTS COM 784117103 106,043 68,776 184.55 5,045 176.14 0.0127
2015-08-13 2015-06-30 13F SEI INVESTMENTS COM 784117103 37,267 -88,526 -70.37 1,827 -67.10 0.0037
2015-05-14 2015-03-31 13F SEI INVESTMENTS COM 784117103 125,793 81,825 186.10 5,553 214.26 0.0107
2015-02-13 2014-12-31 13F SEI INVESTMENTS COM 784117103 43,968 8,341 23.41 1,767 36.87 0.0037
2014-11-18 2014-09-30 13F SEI INVESTMENTS COM 784117103 35,627 -687 -1.89 1,291 9.13 0.0027
2014-08-14 2014-06-30 13F SEI INVESTMENTS COM 784117103 36,314 6,082 20.12 1,183 16.32 0.0026
2014-05-14 2014-03-31 13F SEI INVESTMENTS COM 784117103 30,232 3,090 11.38 1,017 7.85 0.0024
2014-02-14 2013-12-31 13F SEI INVESTMENTS COM 784117103 27,142 2,324 9.36 943 23.11 0.0025
2013-11-14 2013-09-30 13F SEI INVESTMENTS COM 784117103 24,818 22,589 1,013.41 766 1,115.87 0.0021
2013-10-10 2013-06-30 13F/A-1 SEI INVESTMENTS COM 784117103 2,229 -12,975 -85.34 63 -85.65 0.0002
2013-08-14 2013-06-30 13F SEI INVESTMENTS COM 784117103 2,229 63
2013-10-10 2013-03-31 13F/A-1 SEI INVESTMENTS COM 784117103 15,204 -452 -2.89 439 30.65 0.0016
2013-05-22 2013-03-31 13F SEI INVESTMENTS COM 784117103 15,204 439
2013-06-21 2012-09-30 13F/A-1 SEI INVESTMENTS COM 784117103 15,656 336 0.0013
2013-10-11 2012-09-30 13F/A-2 SEI INVESTMENTS COM 784117103 15,656 15,656 336 0.0013
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
(%)
2015-11-12 2015-09-30 13F SEI INVESTMENTS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-08-13 2015-06-30 13F SEI INVESTMENTS COM Call 35,494 1,740 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
(%)
2013-11-14 2013-09-30 13F SEI INVESTMENTS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-10-10 2013-06-30 13F/A SEI INVESTMENTS COM Put 5,974 170 n/a n/a n/a
2013-08-14 2013-06-30 13F SEI INVESTMENTS COM Put 5,974 170 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.