Share this article

FINRA Fines Ex-Merrill Lynch Investment Adviser Over Crypto Mining Sideline

U.S. self-regulatory organization FINRA has fined and suspended an investment adviser over undeclared cryptocurrency mining activities.

Updated Sep 13, 2021, 9:18 a.m. Published Jun 13, 2019, 10:10 a.m.
btc mining

U.S. self-regulatory organization, the Financial Industry Regulatory Authority (FINRA), has fined and suspended an investment adviser over undeclared cryptocurrency mining activities.

According to a letter of acceptance, waiver and consent published by FINRA on June 10, Kyung Soo Kim had been working at Merrill Lynch and was registered with the watchdog as a general securities representative through the firm from March 2014.

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

However, in December 2017 – the month bitcoin reached its all-time high of $20,000 – Kim formed a company called S Corporation to engage in crypto mining activities.

He also struck a deal with another firm to build and operate computer hardware and software for the mining effort, and transferred funds to that firm to pay for its services.

However, Kim failed to provide written notice of the mining venture to his employer at the time, Merrill Lynch, thus breaking two of FINRA's rules, numbered 3270 and 2010.

These specify that business activities outside the FINRA-registered employment must be declared in writing, and that FINRA-associated individuals must "observe high standards of commercial honor and just and equitable principles of trade."

As a result, the agency has fined Kim $5,000 for the infraction and suspended him from association with any FINRA-registered firm for one month.

Bitcoin mining miniatures image via Shutterstock

More For You

Protocol Research: GoPlus Security

GP Basic Image

What to know:

  • As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
  • GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
  • Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.

More For You

Bitcoin Faces Japan Rate Hike: Debunking The Yen Carry Trade Unwind Alarms, Real Risk Elsewhere

japan, flag. (DavidRockDesign/Pixabay/Modified by CoinDesk)

Speculators maintain net bullish positions in the yen, limiting scope for sudden JPY strength and mass carry unwind.

What to know:

  • Impending BOJ rate hike largely priced in; Japanese bond yields near multi-decade highs.
  • Speculators maintain net bullish positions in the yen, limiting scope for sudden yen strength.
  • BOJ tightening may contribute to sustained upward pressure on global yields, impacting risk sentiment.