Yes, Nancy Pelosi's disclosure records indicate that she purchased units of AllianceBernstein Holding L.P. on December 22, 2020. The transaction was valued in the range of $500,001 to $1,000,000. These disclosures are part of the standard transparency requirements for members of Congress, which mandate that they report significant financial trades. The purchase of these units, which are publicly traded on the market, is documented in public filings available through various congressional trading trackers that monitor and report on the investment activities of elected officials.