Founded in 2011, SoFi “was once the leader of a booming private student loan refinancing industry,” according to to the Student Borrower Protection Center (SBPC), a nonprofit advocacy group. SoFi’s stock price has plummeted by more than 70% since its peak.

“SoFi CEO Anthony Noto is a financial vulture gorging himself on our bloated and broken student loan system,” SBPC executive director Mike Pierce said in a statement. “Noto’s failing company thinks it is entitled to engorge itself by skimming the cream off of the federal student loan portfolio and—after a failed back-room lobbying blitz—is running into court because the government doesn’t agree.”