StoneX Group Inc. (SNEX) Insider Trading

Over the last 3 months, SNEX insiders made 1 open-market buy and 21 sales, a net sale of -$69.3M (SEC Form 4). Over the last 6 months, 455 institutions increased and 180 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
1
Sells (3m)
21
Net (3m)
-$69.3M
Insiders buyingFirst buy in 3 quarters
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price -11.7%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 17, 2026Dunaway William Jofficer: Chief Financial OfficerOption126,562$8.90
Aug 17, 2026Dunaway William Jofficer: Chief Financial OfficerSell96,490$66.35
Aug 11, 2026Thamodaran Dhamu R.directorBuy2,500$64.48
Aug 11, 2026Maurer Mark Lowryother: Chief Risk OfficerSell52,648$66.25
Aug 11, 2026Maurer Mark Lowryother: Chief Risk OfficerOption69,372$8.90
Aug 11, 2026Perkins Abigail Hofficer: Chief Information OfficerSell4,500$64.81
Aug 11, 2026Perkins Abigail Hofficer: Chief Information OfficerOption4,500$12.26
Aug 6, 2026FOWLER JOHN MOOREdirectorSell1,575$75.41
Aug 5, 2026Cooper Diane L.directorGrant116—
Aug 5, 2026RADZIWILL JOHNdirector, officer: Chairman of the BoardGrant219—
Aug 5, 2026FOWLER JOHN MOOREdirectorTax197$77.62
Aug 3, 2026Thamodaran Dhamu R.directorGrant142—
Aug 3, 2026FOWLER JOHN MOOREdirectorGrant174—
Aug 3, 2026FOWLER JOHN MOOREdirectorTax230$77.62
Aug 3, 2026KASS STEVEN AdirectorGrant174—
Jul 27, 2026Rotsztain Diegoofficer: Chief Governance/Legal OfficerSell20,630$74.40
Jul 23, 2026Rotsztain Diegoofficer: Chief Governance/Legal OfficerOption50,625$12.26
Jul 23, 2026Rotsztain Diegoofficer: Chief Governance/Legal OfficerSell29,995$74.32
Jul 23, 2026Dunaway William Jofficer: Chief Financial OfficerOption126,563$8.90
Jul 23, 2026Smith Philip Andrewdirector, officer: Chief Executive OfficerOption45,000$8.90
Jul 23, 2026Maurer Mark Lowryother: Chief Risk OfficerSell52,376$74.32
Jul 23, 2026Smith Philip Andrewdirector, officer: Chief Executive OfficerSell45,000$74.32
Jul 23, 2026OCONNOR SEAN MICHAELdirector, officer: Executive Vice-Chairman-BoardOption225,000$8.90
Jul 23, 2026Dunaway William Jofficer: Chief Financial OfficerSell95,970$74.33
Jul 23, 2026OCONNOR SEAN MICHAELdirector, officer: Executive Vice-Chairman-BoardSell104,934$74.33
Jul 23, 2026Maurer Mark Lowryother: Chief Risk OfficerOption69,372$8.90
Jul 21, 2026Perkins Abigail Hofficer: Chief Information OfficerSell8,919$70.43
Jul 16, 2026BEXIGA ANNABELLE GdirectorSell1,500$113.92
Jul 1, 2026Smith Philip Andrewdirector, officer: Chief Executive OfficerSell14,040$118.67
Jul 1, 2026Smith Philip Andrewdirector, officer: Chief Executive OfficerOption37,500$13.34

Source: SNEX SEC Form 4 filings, latest Aug 17, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their SNEX positions over the last 6 months (SEC Form 13F).

Increased
455
New positions
180
Reduced
180
Sold out
33
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased11.3MAug 7, 2026
BLACKROCK, INC.Increased11.0MMay 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased4.0MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position3.7MMay 8, 2026
PRICE T ROWE ASSOCIATES INC /MD/Increased3.5MMay 15, 2026
AMERICAN CENTURY COMPANIES INCIncreased3.4MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased3.2MAug 13, 2026
PRICE T ROWE ASSOCIATES INC /MD/Reduced3.1MAug 14, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position3.0MMay 15, 2026
AMERICAN CENTURY COMPANIES INCReduced3.0MAug 12, 2026
STATE STREET CORPIncreased2.9MAug 7, 2026
STATE STREET CORPIncreased2.8MMay 15, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.Increased2.5MMay 15, 2026
T. Rowe Price Investment Management, Inc.Reduced2.3MAug 14, 2026
DIMENSIONAL FUND ADVISORS LPIncreased2.1MMay 7, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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