StoneX Group Inc.
US ˙ NasdaqGS ˙ US8618961085

SecuritySNEX / StoneX Group Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership35,324 shares
Latest Disclosed Value $ 3,360,331
Sei Investments Co reports 188.03% increase in ownership of SNEX / StoneX Group Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 35,324 shares of StoneX Group Inc. (US:SNEX) valued at $3,360,372 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 12,264 shares of StoneX Group Inc.. This represents a change in shares of 188.03% during the quarter. The current value of the position is $3,852,789 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)
2026-02-13 2025-12-31 13F STONEX GROUP COM 861896108 35,324 23,060 188.03 3,360 171.62
2025-11-13 2025-09-30 13F STONEX GROUP COM 861896108 12,264 -4,420 -26.49 1,238 -18.62 0.0013
2025-08-14 2025-06-30 13F STONEX GROUP COM 861896108 16,684 -95,979 -85.19 1,521 -82.34 0.0018
2025-05-14 2025-03-31 13F/A-1 STONEX GROUP COM 861896108 112,663 64,588 134.35 8,605 82.74 0.0111
2025-05-13 2025-03-31 13F STONEX GROUP COM 861896108 54,929 6,854 5,230 0.0057
2025-02-11 2024-12-31 13F STONEX GROUP COM 861896108 48,075 18,155 60.68 4,710 92.28 0.0060
2024-11-12 2024-09-30 13F STONEX GROUP COM 861896108 29,920 -1,692 -5.35 2,450 2.90 0.0032
2024-08-13 2024-06-30 13F STONEX GROUP COM 861896108 31,612 31,612 2,381 0.0034
2024-05-07 2024-03-31 13F STONEX GROUP COM 861896108 0 -3,844 -100.00 0 -100.00
2024-02-14 2023-12-31 13F STONEX GROUP COM 861896108 3,844 -6,584 -63.14 284 -71.98 0.0005
2023-11-14 2023-09-30 13F STONEX GROUP COM 861896108 10,428 -13,219 -55.90 1,011 -48.57 0.0018
2023-08-11 2023-06-30 13F STONEX GROUP COM 861896108 23,647 -3,145 -11.74 1,965 -29.17 0.0034
2023-05-12 2023-03-31 13F STONEX GROUP COM 861896108 26,792 -5,304 -16.53 2,774 -9.32 0.0052
2023-02-10 2022-12-31 13F STONEX GROUP COM 861896108 32,096 7,331 29.60 3,059 48.88 0.0068
2022-11-14 2022-09-30 13F STONEX GROUP COM 861896108 24,765 17,443 238.23 2,054 259.72 0.0046
2022-08-15 2022-06-30 13F STONEX GROUP COM 861896108 7,322 -2,109 -22.36 571 -16.40 0.0012
2022-05-13 2022-03-31 13F STONEX GROUP COM 861896108 9,431 9,431 683 0.0014
2021-05-12 2021-03-31 13F STONEX GROUP COM 861896108 0 -4,133 -100.00 0 -100.00
2021-02-08 2020-12-31 13F STONEX GROUP COM 861896108 4,133 -1,968 -32.26 239 -23.40 0.0006
2020-12-04 2020-09-30 13F/A-1 STONEX GROUP COM 861896108 6,101 6,101 312 0.0009
2020-11-06 2020-09-30 13F STONEX GROUP COM 861896108 6,101 6,101 312
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.