Evidence from Business Insider (Source 9) reports that short-sellers lost $1.6 billion during the GameStop short squeeze in January 2021. Such significant losses in a short squeeze event are typically the result of forced liquidations of short positions over a short period. While other sources mention the $1.6 billion figure in unrelated contexts (e.g., corporate finance, drug revenue) or as a future possibility, Source 9 provides strong, direct evidence of a past event that aligns with the statement's claim.