The second-biggest U.S. lender had about $603 billion in held-to-maturity securities, it said in a filing on Tuesday, shrinking from $614 billion in the second quarter.
Unrealized losses have come under closer scrutiny by investors since March. At the time, Silicon Valley Bank sold a portfolio of its holdings at a sharp loss, precipitating its collapse and fueling the worst industry turmoil since the 2008 financial crisis.
Analysts say it is highly unlikely that Bank of America would sell the securities at a loss.
"All of these are unrealized losses are on government- guaranteed securities," Bank of America's chief financial officer, Alastair Borthwick, told reporters on conference call discussing third-quarter earnings. "Because we're holding them to maturity, we will anticipate that we'll have zero losses over time."
And yet the holdings of low-yielding assets have also constrained the second-largest U.S. lender's ability to make higher profit from deploying its cash in money markets or other assets with greater returns.
JPMorgan Chase (JPM.N) had unrealized losses of $40 billion in its HTM portfolio in the third quarter.
Banks park securities under either available-for-sale (AFS) or held-to-maturity securities.
AFS securities are carried at fair value and subject to mark-to-market losses. If banks have intention to hold debt securities until maturity they keep them in held to maturity portfolio.
