(Bloomberg) -- Charles Schwab removed Pacific Investment Management from its target-date retirement funds after the departure of Pimco co-founder Bill Gross.

Schwab pulled the Pimco Total Return Fund, the world’s largest bond fund, from its target-date funds sold to retail investors, spokeswoman Alison Wertheim said in an e-mailed statement. The company also removed the Newport Beach, California-based Pimco as a separate account manager in theSchwab Institutional Core-Plus Fixed Income Trust Fund, in which the Schwab Managed Retirement Trust Funds invest.

“On the retail side, a search for a replacement strategy is underway and assets have been reallocated between the Schwab Total Bond Market Fund and Loomis Sayles Investment Grade Bond Fund,” Wertheim said.

The Pimco Total Return Fund, managed by Gross until his departure to Janus Capital Group last week, suffered an estimated $23.5 billion of withdrawals in September, its worst month ever for redemptions.

Schwab’s target-date mutual funds held about $2.85 billion in assets as of Aug. 31, according to Janet Yang, an analyst at Chicago-based researcher Morningstar Schwab didn’t say how much money its target-date funds had invested in Pimco funds.

Target-date funds are the most common default investment in 401(k) retirement accounts for workers who don’t pick their own mix of assets. The funds automatically shift toward more conservative securities such as bonds from more risky ones like stocks as employees near retirement.

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