Marking the close
Marking the close is trading in the final minutes of a session specifically to influence the closing price, which is the price that sets portfolio marks, margin calls, index levels and derivative settlements.
Where does marking the close come up?
This term is used in the following manipulation techniques, each explained in full on its own page.
Enforcement actions involving these techniques
| Action | Agency | Filed | Technique | Penalty | Status |
|---|---|---|---|---|---|
| ASIC v. Delta Power & Energy (Vales Point) Pty Ltd (price manipulation, 2025) | ASIC | 2025-06-30 | Price Manipulation , Marking The Close | — | filed |
| AMF France v. EcoR1 Capital LLC and M. Oleg Nodelman (marking the close, 2024) | AMF (France) | 2024-12-13 | Marking The Close | — | judgment |
| ASIC v. COFCO International Australia Pty Ltd (marking the close, 2024) | ASIC | 2024-07-24 | Marking The Close , Price Manipulation | — | filed |
| ASIC v. Interactive Brokers (marking the close, 2023) | ASIC | 2023-09-20 | Marking The Close | — | settled |
| SEBI v. Aventis Biofeeds Private Limited and others (closing-session price ramp, Ruchi Soya, 2022) | SEBI (India) | 2022-04-29 | Marking The Close , Settlement Price Manipulation | — | judgment |