NEW: Tether reported Q2 net operating profit of $1.5B as USDT supply climbed to $184.6B, extending its stablecoin market share to more than 60%, according to its latest BDO attestation. The issuer said reserves exceeded liabilities by $4.11B at quarter-end, while it cut secured lending exposure by $2.38B and remained one of the world's largest buyers of U.S. Treasuries.(The Block)