Closing auction
A closing auction gathers orders into a single batch to set the official closing price. Concentrating the close into an auction improves price formation but also creates one identifiable moment worth attacking.
Where does closing auction 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 |