SEC DEFENSE

How the SEC Proves Insider Trading

April 1, 2026 2 minutes read By Todd Spodek, Esq.
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Most people who commit insider trading think they are being clever. They use a friend’s brokerage account, communicate through encrypted messaging apps, and wait a few days before trading. They think these precautions will protect them. They are wrong.

The SEC has spent the last decade building surveillance infrastructure with ARTEMIS (a 10 billion record database), MIDAS (processing one billion records per day), and the FINRA Alert Engine (generating 450 referrals annually).

The Legal Elements: The SEC’s Roadmap to a Conviction

Every insider trading prosecution must prove four elements beyond a reasonable doubt:

  1. Material Nonpublic Information: The defendant possessed information that was both material and nonpublic.
  2. Duty of Trust or Confidence: The defendant owed a duty of trust to the source of the information.
  3. Misuse of the Information: The defendant breached that duty by using the information for personal gain.
  4. Scienter (Intent): The defendant acted knowingly and willfully.

How the SEC Detects Insider Trading

ARTEMIS: The 10 Billion Record Database

ARTEMIS cross-references trades against news and filings to spot abnormal returns, event-driven trading, and serial outsized returns.

MIDAS: One Billion Records Per Day

MIDAS collects every order from every exchange and dark pool, tracking who traded, when, and how much, with microsecond-level timestamps.

FINRA: 450 Referrals Annually

FINRA routinely provides the SEC with about 450 referrals per year for potential insider trading and brokerage account monitoring.

The Smoking Guns: Electronic Communications

In modern insider trading cases, the smoking gun is almost always an electronic communication: suspiciously timed messages, code words, explicit trading instructions, attempts to conceal, admissions of relationships, evidence of personal benefit, and follow-up confirmations.

Why “Clever” Tactics Backfire

  • Using a Friend’s Account: The SEC simply subpoenas the friend’s account and matches trades to phone records.
  • Delayed Trading: Surveillance systems still connect the dots.
  • Encrypted Messaging Apps: These can be decrypted with proper warrants.

These tactics often strengthen the SEC’s case by showing consciousness of guilt.

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Insider Trading Allegation

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