Cosan S.A.
Cosan S.A. (CSAN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CSAN · as of Mar 31, 2025
Ownership Breakdown
88
Institutional Holders
▲ 2 vs Q4
$78.00M
Total Inst. Value
▼ $12.09M vs Q4
979.74M
Shares Outstanding
freeFloat 50.05%
14.94M
13F Shares Held
▼ 1.66M 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
CSAN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
RENAISSANCE TECHNOLOGIES LLC retail-auto dealers & gasoline stations | 4.44M | 24.55% | 24.55% | $23.19B | May 14, 2025 | ▲ 160.5K |
MARTIN CURRIE LTD retail-auto dealers & gasoline stations | 1.44M | 7.95% | 7.95% | $7.51B | May 13, 2025 | ▲ 240.6K |
UBS GROUP AG retail-auto dealers & gasoline stations | 1.18M | 6.50% | 6.50% | $6.14B | May 13, 2025 | ▼ 133.0K |
MOON CAPITAL MANAGEMENT LP retail-auto dealers & gasoline stations | 1.10M | 6.07% | 6.07% | $5.75B | May 15, 2025 | ▼ 115.7K |
BLACKROCK, INC. retail-auto dealers & gasoline stations | 696.4K | 3.85% | 3.85% | $3.64B | May 2, 2025 | ▼ 138.4K |
MILLENNIUM MANAGEMENT LLC retail-auto dealers & gasoline stations | 697.4K | 3.84% | 3.84% | $3.64B | May 15, 2025 | ▲ 332.6K |
MORGAN STANLEY retail-auto dealers & gasoline stations | 520.4K | 2.88% | 2.88% | $2.72B | May 15, 2025 | ▼ 530.9K |
BANK OF AMERICA CORP /DE/ retail-auto dealers & gasoline stations | 438.8K | 2.42% | 2.42% | $2.29B | May 15, 2025 | ▲ 34.3K |
LAZARD ASSET MANAGEMENT LLC retail-auto dealers & gasoline stations | 416.0K | 2.30% | 2.30% | $2.17B | May 15, 2025 | ▼ 83.7K |
POINT72 ASSET MANAGEMENT, L.P. retail-auto dealers & gasoline stations | 361.3K | 2.00% | 2.00% | $1.89B | Jul 21, 2025 | ▲ 167.6K |
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
22
Increased
+1.96M shares9
New Positions
first time holders16
Decreased
−2.94M shares0
Sold Out
fully exitedNet shares change (top 50)
983.0K
+1.96M / −2.94M
Net new holders
+15
9 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
CSAN 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.
1
Buy transactions
4
Sell transactions
0.25
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 |
|---|---|---|---|---|---|---|---|
Mello Rubens Ometto Silveira director | May 22, 2026 | Sale | 77,640 | $3.44 | $267.1K | 0 | Form 4 ↗ |
Drummond Maria Rita de Carvalho Chief Legal Officer | May 19, 2026 | J-Other | 280,954 | $5.14 | $1.44M | 2.33M | Form 4 ↗ |
Drummond Maria Rita de Carvalho Chief Legal Officer | Apr 15, 2026 | Sale | 35,800 | $5.57 | $199.4K | 2.20M | Form 4 ↗ |
Drummond Maria Rita de Carvalho Chief Legal Officer | Apr 16, 2026 | Sale | 36,200 | $5.48 | $198.5K | 2.17M | Form 4 ↗ |
Drummond Maria Rita de Carvalho Chief Legal Officer | Apr 17, 2026 | Sale | 37,400 | $5.48 | $204.9K | 2.13M | Form 4 ↗ |
Drummond Maria Rita de Carvalho Chief Legal Officer | May 19, 2026 | J-Other | 280,954 | $5.14 | $1.44M | 409.1K | 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
Cosan S.A. (CSAN) is primarily owned by institutional investors, who hold approximately 1.5% of total shares outstanding. Company insiders own approximately 49.95%, while retail and public investors account for the remaining 48.53%.
The largest institutional shareholder of Cosan S.A. is RENAISSANCE TECHNOLOGIES LLC, holding approximately 4.44 million shares — equal to 24.55% of outstanding shares — as of March 31, 2025.
A total of 88 institutional investors currently hold CSAN stock, with a combined institutional value of approximately $77,999,198 as of the most recent 13F filing period.
Frequently asked questions
CSAN ownershipCosan S.A. (CSAN) is primarily owned by institutional investors, who hold approximately 1.5% of shares. The largest shareholder is RENAISSANCE TECHNOLOGIES LLC with a 24.55% stake. Company insiders hold 49.95%. Data sourced from SEC Form 13F as of March 31, 2025.