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Mark to market

Marking to market is valuing a position at current market prices. Because it converts a price into reported profit, collateral and margin, anyone whose compensation depends on the mark has a motive to influence the price used.

instruments and markets · updated 2026-09-09

Where does mark to market 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
SEC v. Canaccord Genuity LLC (marking the close, 2026) SEC 2026-03-06 Marking The Close , Marking The Open +2 settled
ASIC v. COFCO International Australia Pty Ltd (marking the close, 2024) ASIC 2024-07-24 Marking The Close , Price Manipulation unknown
ASIC v. Interactive Brokers (marking the close, 2023) ASIC 2023-09-20 Marking The Close unknown
SEC v. Ahmad Haris Tajyar and Eric Leo Marsoubian (marking the close, 2021) SEC 2021-08-13 Marking The Close , Matched Orders +1 $220k settled
SEC v. Andrew J. Kandelapas (marking the close, 2019) SEC 2019-06-21 Marking The Close judgment

See also

Terms that refer here

Margin · Marking-to-model · Net asset value

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