According to a report released by BitMex Research, 3,392 BCH (over $1.35 million) was double spent after the coin’s hard fork
Source: https://cointelegraph.com/news/bch-may-have-sustained-13-million-double-spend-bitmex-research
BCH May Have Sustained $1.3 Million+ Double Spend: BitMex Research
May 26, 2019
CoinTelegraph