sympathetic rise; coattail rally
Finance term for a stock price rising because other stocks in the same sector or market are rising, not necessarily due to its own fundamentals.
Today's sympathetic rise was triggered by strong earnings from other companies in the same industry.
This stock's rise is not based on its own strength but is merely a coattail rally.
Compound of 連れ (tsure, 'accompanying') and 高 (daka, 'high price'). The reading つれだか follows standard rendaku voicing.