Golden Sun Tech jumps 8% in after-hours trading on volatilityUS Stock Market UpdateJul 1, 2026 at 04:31 PMGolden Sun Tech(GSUN.US) 盘后涨8.04%,现报0.399美元。该股近期波动频繁,此前曾在多个交易日出现显著涨跌幅,包括 5 月初盘中涨超 20%、4 月下旬涨超 13% 等。