Comparable stake leader
BlackRock, Inc.
SEC ownership of StoneX Group Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000913760.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- SNEX on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000913760
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of StoneX Group Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 13%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 13%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
13%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.1%
PRICE T ROWE ASSOCIATES INC /MD/
4.4%
Gregory Kallinikos
0.01%
AMERICAN CENTURY COMPANIES INC
4.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
13%
from 13D/G
|
$888,154,160
11,012,451 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.1%
|
$504,289,130
4,075,393 shares
|
$0 | 30 Jun 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13D/G
13F
T. Rowe Price Associates, Inc. · Company
|
4.4%
|
$323,822,919
3,471,515 shares
|
+$57,836,585 | 31 Mar 2026 |
| Gregory Kallinikos |
3/4/5
APAC Operations CEO
|
0.01%
|
$908,280
9,000 shares
|
— | 31 Oct 2025 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
4.3%
|
$274,087,009
3,398,475 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
3.8%
|
$243,957,862
3,024,896 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
3.5%
|
$224,384,511
2,782,201 shares
|
— | 31 Mar 2026 |
| T. Rowe Price Investment Management, Inc. |
13F
Company
|
3.2%
|
$202,528,000
2,511,192 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$144,947,864.
Buys
$97,250
Insiders: 1
Sells
$145,045,114
Insiders: 12
Net
-$144,947,864
Shares: -1,352,817
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 1,000
Shares: 1,353,817
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 1,141,163 | $0 | $119,926,863 | -$119,926,863 |
| 3-6 | 0 | 49,550 | $0 | $5,135,641 | -$5,135,641 |
| 6-9 | 1,000 | 156,979 | $97,250 | $19,402,009 | -$19,304,759 |
| 9-12 | 0 | 6,125 | $0 | $580,600 | -$580,600 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 22 reporting-owner rows connected to StoneX Group Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
22
Largest Forms 3/4/5 holder
Sean Michael Oconnor
Net 12M change
-$144,947,866
Latest report
05 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Sean Michael Oconnor | Executive Vice-Chairman-Board, Director | $657,729,537 | -$71,417,989 | -9.8% | Mixed | 22 Jul 2026 |
| John Radziwill | Chairman of the Board, Director | $254,668,942 | +$97,250 | +0.04% | Median | 31 Jul 2026 |
| Philip Andrew Smith | Chief Executive Officer, Director | $115,410,926 | -$13,192,556 | -10% | Mixed | 22 Jul 2026 |
| Scott J. Branch | Retired Director | $73,060,642 | Mixed | 13 Mar 2024 | ||
| William J. Dunaway | Chief Financial Officer | $35,092,883 | -$22,546,547 | -39% | Filing P/S | 22 Jul 2026 |
| Charles M. Lyon | President | $28,568,680 | -$4,930,911 | -15% | Filing P/S | 12 Jun 2026 |
| John M. Fowler | Director | $20,049,861 | -$459,721 | -2.2% | Mixed | 05 Aug 2026 |
| Stuart Davison | Chief Operating Officer | $17,334,342 | Mixed | 15 Dec 2025 | ||
| Mark L. Maurer | Chief Risk Officer | $16,368,633 | -$20,459,843 | -56% | Filing P/S | 22 Jul 2026 |
| Dhamu R. Thamodaran | Director | $11,718,562 | Mixed | 31 Jul 2026 | ||
| Xuong Nguyen | Retired Officer | $10,216,530 | Mixed | 15 Jul 2024 | ||
| Glenn Henry Stevens | Retired Officer | $9,185,695 | Filing P/S | 18 Feb 2025 | ||
| Abigail H. Perkins | Chief Information Officer | $6,897,485 | -$2,152,902 | -24% | Mixed | 20 Jul 2026 |
| Steven A. Kass | Director | $6,565,535 | -$246,519 | -3.6% | Filing P/S | 31 Jul 2026 |
| Aaron M. Schroeder | Chief Accounting Officer | $6,314,093 | -$429,272 | -6.4% | Filing P/S | 11 May 2026 |
| Eric Parthemore | Director | $5,409,642 | -$308,249 | -5.4% | Filing P/S | 11 May 2026 |
| Diego Rotsztain | Chief Governance/Legal Officer | $2,594,352 | -$8,101,052 | -76% | Filing P/S | 24 Jul 2026 |
| Annabelle G. Bexiga | Director | $2,128,936 | -$799,555 | -27% | Filing P/S | 15 Jul 2026 |
| Gregory Kallinikos | APAC Operations CEO | $908,280 | Mixed | 31 Oct 2025 | ||
| Patricia M. Harrod | Retired Officer | $845,656 | Mixed | 26 Oct 2021 |
Recent insider transactions for StoneX Group Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John M. Fowler | SNEX | Common Stock | Sale | -0.61% | $118,771 | $75.41 | -1,575 | 255,271 | 05 Aug 2026 | Direct |
| John M. Fowler | SNEX | Common Stock | Tax liability | -0.08% | -197 | 256,846 | 31 Jul 2026 | Direct | ||
| John M. Fowler | SNEX | Restricted Shares of Common Stock | Award | 0.07% | 174 | 257,043 | 31 Jul 2026 | Direct | ||
| Diane L. Cooper | SNEX | Restricted Shares of Common Stock | Award | 0.21% | 116 | 56,102 | 31 Jul 2026 | Direct | ||
| John Radziwill | SNEX | Restricted Shares of Common Stock | Award | 0.09% | 219 | 231,850 | 31 Jul 2026 | Direct | ||
| Dhamu R. Thamodaran | SNEX | Restricted Shares of Common Stock | Award | 2.58% | 142 | 5,648 | 31 Jul 2026 | Direct | ||
| Steven A. Kass | SNEX | Restricted Shares of Common Stock | Award | 0.22% | 174 | 80,073 | 31 Jul 2026 | Direct | ||
| Diego Rotsztain | SNEX | Common Stock | Sale | -37.2% | $1,534,886 | $74.40 | -20,630 | 34,870 | 24 Jul 2026 | Direct |
| Diego Rotsztain | SNEX | Common Stock | Sale | -35.1% | $2,229,282 | $74.32 | -29,995 | 55,500 | 22 Jul 2026 | Direct |
| Diego Rotsztain | SNEX | Common Stock | Options Exercise | 145.2% | 50,625 | 85,495 | 22 Jul 2026 | Direct | ||
| Diego Rotsztain | SNEX | Stock Options | Options Exercise | -8.33% | -50,625 | 556,875 | 22 Jul 2026 | Direct | ||
| Sean Michael Oconnor | SNEX | Common Stock | Sale | -5.66% | $7,799,776 | $74.33 | -104,934 | 1,750,447 | 22 Jul 2026 | Direct |
| Sean Michael Oconnor | SNEX | Common Stock | Options Exercise | 13.8% | 225,000 | 1,855,381 | 22 Jul 2026 | Direct | ||
| Sean Michael Oconnor | SNEX | Stock Options | Options Exercise | -11.8% | -225,000 | 1,676,250 | 22 Jul 2026 | Direct | ||
| William J. Dunaway | SNEX | Common Stock | Sale | -16.9% | $7,133,325 | $74.33 | -95,970 | 472,131 | 22 Jul 2026 | Direct |
| William J. Dunaway | SNEX | Common Stock | Options Exercise | 28.7% | 126,563 | 568,101 | 22 Jul 2026 | Direct | ||
| William J. Dunaway | SNEX | Stock Options | Options Exercise | -16.7% | -126,563 | 632,812 | 22 Jul 2026 | Direct | ||
| Philip Andrew Smith | SNEX | Common Stock | Sale | -5.75% | $3,344,481 | $74.32 | -45,000 | 738,216 | 22 Jul 2026 | Direct |
| Philip Andrew Smith | SNEX | Common Stock | Options Exercise | 6.1% | 45,000 | 783,216 | 22 Jul 2026 | Direct | ||
| Philip Andrew Smith | SNEX | Stock Options | Options Exercise | -4.68% | -45,000 | 916,875 | 22 Jul 2026 | Direct | ||
| Mark L. Maurer | SNEX | Common Stock | Sale | -19.2% | $3,892,679 | $74.32 | -52,376 | 220,240 | 22 Jul 2026 | Direct |
| Mark L. Maurer | SNEX | Common Stock | Options Exercise | 34.1% | 69,372 | 272,616 | 22 Jul 2026 | Direct | ||
| Mark L. Maurer | SNEX | Stock Options | Options Exercise | -8.85% | -69,372 | 714,366 | 22 Jul 2026 | Direct | ||
| Abigail H. Perkins | SNEX | Common Stock | Sale | -8.45% | $628,147 | $70.43 | -8,919 | 96,663 | 20 Jul 2026 | Direct |
| Annabelle G. Bexiga | SNEX | Common Stock | Sale | -7.43% | $170,880 | $113.92 | -1,500 | 18,688 | 15 Jul 2026 | Direct |
| Philip Andrew Smith | SNEX | Common Stock | Options Exercise | 7.62% | 37,500 | 529,644 | 30 Jun 2026 | Direct | ||
| Philip Andrew Smith | SNEX | Common Stock | Sale | -9.48% | $6,119,075 | $118.72 | -51,540 | 492,144 | 30 Jun 2026 | Direct |
| Philip Andrew Smith | SNEX | Stock Options | Options Exercise | -5.52% | -37,500 | 641,250 | 30 Jun 2026 | Direct | ||
| Mark L. Maurer | SNEX | Common Stock | Sale | -7.85% | $1,542,332 | $133.63 | -11,542 | 135,496 | 16 Jun 2026 | Direct |
| Mark L. Maurer | SNEX | Common Stock | Sale | -19.1% | $4,696,090 | $135.31 | -34,706 | 147,038 | 15 Jun 2026 | Direct |
| Mark L. Maurer | SNEX | Common Stock | Options Exercise | 34.1% | 46,248 | 181,744 | 15 Jun 2026 | Direct | ||
| Mark L. Maurer | SNEX | Stock Options | Options Exercise | -8.13% | -46,248 | 522,492 | 15 Jun 2026 | Direct | ||
| Sean Michael Oconnor | SNEX | Common Stock | Sale | -6.45% | $10,156,770 | $135.42 | -75,000 | 1,086,921 | 15 Jun 2026 | Direct |
| Annabelle G. Bexiga | SNEX | Common Stock | Sale | -6.92% | $200,040 | $133.36 | -1,500 | 20,188 | 15 Jun 2026 | Direct |
| Abigail H. Perkins | SNEX | Common Stock | Gift | -2.76% | -2,000 | 70,388 | 15 Jun 2026 | Direct | ||
| Charles M. Lyon | SNEX | Common Stock | Sale | -3.99% | $1,187,640 | $131.96 | -9,000 | 216,495 | 12 Jun 2026 | Direct |
| Sean Michael Oconnor | SNEX | Common Stock | Sale | -6.06% | $9,836,280 | $131.15 | -75,000 | 1,161,921 | 12 Jun 2026 | Direct |
| William J. Dunaway | SNEX | Common Stock | Sale | -17.8% | $8,342,013 | $131.16 | -63,602 | 294,359 | 12 Jun 2026 | Direct |
| William J. Dunaway | SNEX | Common Stock | Options Exercise | 30.8% | 84,375 | 357,961 | 12 Jun 2026 | Direct | ||
| William J. Dunaway | SNEX | Stock Options | Options Exercise | -14.3% | -84,375 | 506,250 | 12 Jun 2026 | Direct | ||
| Abigail H. Perkins | SNEX | Common Stock | Sale | -5.62% | $511,025 | $118.51 | -4,312 | 72,388 | 08 Jun 2026 | Direct |
| Abigail H. Perkins | SNEX | Common Stock | Options Exercise | 5.96% | 4,312 | 76,700 | 08 Jun 2026 | Direct | ||
| Abigail H. Perkins | SNEX | Stock Options | Options Exercise | -1.23% | -4,312 | 346,500 | 08 Jun 2026 | Direct | ||
| Mark L. Maurer | SNEX | Common Stock | Sale | -7.76% | $1,279,374 | $112.25 | -11,398 | 135,496 | 22 May 2026 | Direct |
| Philip Andrew Smith | SNEX | Common Stock | Sale | -1.66% | $962,094 | $112.72 | -8,535 | 506,184 | 22 May 2026 | Direct |
| Diego Rotsztain | SNEX | Common Stock | Sale | -37.1% | $1,544,720 | $112.79 | -13,696 | 23,247 | 20 May 2026 | Direct |
| Sean Michael Oconnor | SNEX | Common Stock | Sale | -5.51% | $7,930,999 | $109.94 | -72,140 | 1,236,921 | 19 May 2026 | Direct |
| Sean Michael Oconnor | SNEX | Common Stock | Options Exercise | 5.83% | 72,140 | 1,309,061 | 19 May 2026 | Direct | ||
| Sean Michael Oconnor | SNEX | Stock Options | Options Exercise | -5.39% | -72,140 | 1,267,500 | 19 May 2026 | Direct | ||
| Diego Rotsztain | SNEX | Common Stock | Sale | -35.2% | $2,235,692 | $111.48 | -20,054 | 36,943 | 18 May 2026 | Direct |
* marks a reported price that did not pass the local price check.