StoneX Group Inc.
StoneX Group Inc. (SNEX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SNEX · as of Mar 31, 2025
Ownership Breakdown
320
Institutional Holders
▲ 28 vs Q4
$2.98B
Total Inst. Value
▲ $518.63M vs Q4
79.25M
Shares Outstanding
freeFloat 87.57%
38.97M
13F Shares Held
▲ 13.88M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SNEX largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. security & commodity brokers, dealers, exchanges & services | 6.58M | 14.07% | 14.07% | $502.83B | May 2, 2025 | ▲ 2.13M |
VANGUARD GROUP INC security & commodity brokers, dealers, exchanges & services | 2.88M | 6.16% | 6.16% | $220.07B | May 9, 2025 | ▲ 976.6K |
AMERICAN CENTURY COMPANIES INC security & commodity brokers, dealers, exchanges & services | 1.96M | 4.20% | 4.20% | $149.99B | May 13, 2025 | ▲ 949.5K |
DIMENSIONAL FUND ADVISORS LP security & commodity brokers, dealers, exchanges & services | 1.92M | 4.11% | 4.11% | $146.92B | May 13, 2025 | ▲ 567.2K |
STATE STREET CORP security & commodity brokers, dealers, exchanges & services | 1.75M | 3.73% | 3.73% | $133.43B | May 15, 2025 | ▲ 569.7K |
VAN BERKOM & ASSOCIATES INC. security & commodity brokers, dealers, exchanges & services | 1.41M | 3.01% | 3.01% | $107.59B | May 7, 2025 | ▲ 193.9K |
ALTRAVUE CAPITAL, LLC security & commodity brokers, dealers, exchanges & services | 1.31M | 2.81% | 2.81% | $100.31B | May 13, 2025 | ▲ 402.9K |
GEODE CAPITAL MANAGEMENT, LLC security & commodity brokers, dealers, exchanges & services | 1.09M | 2.33% | 2.33% | $83.15B | May 13, 2025 | ▲ 411.0K |
AMERIPRISE FINANCIAL INC security & commodity brokers, dealers, exchanges & services | 914.2K | 1.95% | 1.95% | $69.83B | May 14, 2025 | ▲ 414.2K |
ROCKEFELLER CAPITAL MANAGEMENT L.P. security & commodity brokers, dealers, exchanges & services | 889.2K | 1.90% | 1.90% | $67.92B | May 14, 2025 | ▲ 356.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
47
Increased
+10.93M shares3
New Positions
first time holders0
Decreased
−0 shares0
Sold Out
fully exitedNet shares change (top 50)
+10.93M
+10.93M / −0
Net new holders
+50
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SNEX insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Maurer Mark Lowry Chief Risk Officer | May 22, 2026 | Sale | 11,398 | $112.25 | $1.28M | 135.5K | Form 4 ↗ |
Smith Philip Andrew Chief Executive Officer | May 22, 2026 | Sale | 8,535 | $112.72 | $962.1K | 506.2K | Form 4 ↗ |
Rotsztain Diego Chief Governance/Legal Officer | May 18, 2026 | Sale | 20,054 | $111.48 | $2.24M | 36.9K | Form 4 ↗ |
Rotsztain Diego Chief Governance/Legal Officer | May 20, 2026 | Sale | 13,696 | $112.79 | $1.54M | 23.2K | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 15, 2026 | Sale | 140,070 | $110.31 | $15.45M | 1.24M | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 19, 2026 | Sale | 72,140 | $109.94 | $7.93M | 1.24M | Form 4 ↗ |
OCONNOR SEAN MICHAEL Executive Vice-Chairman-Board | May 18, 2026 | Sale | 87,790 | $111.46 | $9.79M | 1.24M | Form 4 ↗ |
Dunaway William J Chief Financial Officer | May 15, 2026 | Sale | 64,017 | $110.46 | $7.07M | 273.6K | Form 4 ↗ |
BEXIGA ANNABELLE G director | May 15, 2026 | Sale | 1,500 | $112.82 | $169.2K | 21.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
StoneX Group Inc. (SNEX) is primarily owned by institutional investors, who hold approximately 49.2% of total shares outstanding. Company insiders own approximately 12.43%, while retail and public investors account for the remaining 38.41%.
The largest institutional shareholder of StoneX Group Inc. is BLACKROCK, INC., holding approximately 6.58 million shares — equal to 14.07% of outstanding shares — as of March 31, 2025.
A total of 320 institutional investors currently hold SNEX stock, with a combined institutional value of approximately $2.98 billion as of the most recent 13F filing period.
Frequently asked questions
SNEX ownershipStoneX Group Inc. (SNEX) is primarily owned by institutional investors, who hold approximately 49.2% of shares. The largest shareholder is BLACKROCK, INC. with a 14.07% stake. Company insiders hold 12.43%. Data sourced from SEC Form 13F as of March 31, 2025.