Aquamarine Financial (Cayman) Ltd: COSAN S A (CSAN): Quarterly 13F Position History
As of Q1 2026, Aquamarine Financial (Cayman) Ltd reported 2,096,904 shares of COSAN S A (CSAN), worth $8.6M and representing 0.6% of its 13F equity book. The position first appeared in Q3 2025 and has been disclosed across 3 13F-HR filings in Pactolio's tracked window.
- 2,096,904Shares Held (Latest Filing)
- $8.6MReported Market Value (Latest Filing)
- 0.6%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- +$356.5KQuarter-over-Quarter Value Change
- 2,241,053Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 3 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,096,904 | 0 | — | $8.6M | 0.6% | $4.1 |
| Q4 2025 | 2,096,904 | 144,149 | -6.4% | $8.3M | 0.7% | $4.0 |
| Q3 2025 | 2,241,053 | — | — | $10.3M | 1.1% | $4.6 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Aquamarine Financial (Cayman) Ltd first disclose a CSAN position in 13F-HR filings?
Aquamarine Financial (Cayman) Ltd first reported COSAN S A (CSAN) on its 13F-HR filing for the period ending 2025-09-30 (Q3 2025). The position has appeared on 3 reported quarters within Pactolio's tracked window.
What was Aquamarine Financial (Cayman) Ltd's most recent quarter-over-quarter share-count change in CSAN?
Aquamarine Financial (Cayman) Ltd held the same 2,096,904 shares of CSAN between Q4 2025 and Q1 2026 — the reported share count was unchanged quarter-over-quarter.
Does the implied price-per-share represent Aquamarine Financial (Cayman) Ltd's cost basis in CSAN?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.