BUZZ — Australia's Amaero tumbles on postponing US IPO plans
* Shares of Amaero fall 21.8% to A$0.215, on track for worst day since late September 2022 if trends hold * Stock hits lowest level since September 16 * Alloy powder producer postpones plans for its US initial public offering, citing adverse market conditions * About 2.3 mln shares change hands, 1.4x the 30-day average