The firm added $6.5B in assets in the fourth quarter, mostly from big brokerages.
The deal increases Merriman's assets to about $2 billion based on SEC documents filed last month.
The broker lobbying group also remains concerned about cost and limited investment choices for investors.
The investment advisory firm is the third RIA to join the wealth management group this year.
They joined the firm in three separate moves from UBS Group AG and Morgan Stanley
With $2.5M in production, Jeremy Newton and Stephen Lamb have joined an office in Houston.
Investors claim brokers put too much of their nest eggs into oil and gas companies.
Insurance-owned firms and small broker-dealers most likely to throw in the towel.
In his new role, Mr. Robbins will be working with his long-time financial adviser Ajay Gupta.
Firm said it moved quickly to retain brokers after acquisition was announced.
