Alstom S.A.
Alstom S.A. (ALSMY) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ALSMY · as of Sep 30, 2025
Ownership Breakdown
8
Institutional Holders
▼ 2 vs Q2
$2.29M
Total Inst. Value
▼ $512,815 vs Q2
4.63B
Shares Outstanding
freeFloat 7.28%
882,800
13F Shares Held
▼ 325,104 vs Q2
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
ALSMY largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 9 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
STERLING CAPITAL MANAGEMENT LLC motors & generators | 591.6K | 1.32% | 1.32% | $1.54B | Nov 12, 2025 | ▼ 196.4K |
FULTON BANK, N.A. motors & generators | 106.6K | 0.24% | 0.24% | $276.96M | Oct 21, 2025 | ▼ 24.8K |
OLD NATIONAL BANCORP /IN/ motors & generators | 89.5K | 0.20% | 0.20% | $232.63M | Oct 14, 2025 | ▼ 9.7K |
RHUMBLINE ADVISERS motors & generators | 46.7K | 0.10% | 0.10% | $119.54M | Nov 6, 2025 | ▼ 4.2K |
CANOPY PARTNERS, LLC motors & generators | 25.9K | 0.06% | 0.06% | $66.31M | Oct 30, 2025 | ▼ 4.6K |
GAMMA INVESTING LLC motors & generators | 16.7K | 0.04% | 0.04% | $42.76M | Oct 2, 2025 | ▲ 2.3K |
PNC FINANCIAL SERVICES GROUP, INC. motors & generators | 4.3K | 0.01% | 0.01% | $10.95M | Nov 7, 2025 | ▼ 1.5K |
SALOMON & LUDWIN, LLC motors & generators | 1.6K | 0.00% | 0.00% | $4.05M | Oct 21, 2025 | ▲ 1.5K |
CORIENT IA LLC motors & generators | 0 | 0.00% | 0.00% | $0 | Nov 12, 2025 | EXIT |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
2
Increased
+3.8K shares0
New Positions
first time holders6
Decreased
−241.2K shares1
Sold Out
fully exitedNet shares change (top 50)
237.4K
+3.8K / −241.2K
Net new holders
-5
0 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ALSMY insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
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
Alstom S.A. (ALSMY) is primarily owned by institutional investors, who hold approximately 0.0% of total shares outstanding. Company insiders own approximately 92.72%, while retail and public investors account for the remaining 7.26%.
The largest institutional shareholder of Alstom S.A. is STERLING CAPITAL MANAGEMENT LLC, holding approximately 591,589 shares — equal to 1.32% of outstanding shares — as of September 30, 2025.
A total of 8 institutional investors currently hold ALSMY stock, with a combined institutional value of approximately $2,290,788 as of the most recent 13F filing period.
Frequently asked questions
ALSMY ownershipAlstom S.A. (ALSMY) is primarily owned by institutional investors, who hold approximately 0.0% of shares. The largest shareholder is STERLING CAPITAL MANAGEMENT LLC with a 1.32% stake. Company insiders hold 92.72%. Data sourced from SEC Form 13F as of September 30, 2025.