Shares of Raj Rayon Industries hit upper circuit of 5 per cent today amid a crash in equity market today. Raj Rayon Industries stock rose 5 per cent to Rs 8.88 (a fresh 52 week high) against the previous close of Rs 8.46 on BSE. In fact, the micro-cap stock has gained 172.39 per cent in the last 21 days even as the broader equity market has corrected due to weak global and domestic cues during the period. Sensex crashed 1,000 points to 53,115 and Nifty tanked 312 points to 15,854 in early trade today.