Glaukos Tumbles 8.46% Amid 79% Volume Spike Ranks 343rd in Trading Activity

On July 31, 2025, Glaukos (GKOS) closed at $86.09, down 8.46% from the previous day. The stock traded with a volume of $415.81 million, a 79.22% surge compared to the prior day, ranking it 343rd in trading activity. The session saw intraday volatility of 12.50%, with prices fluctuating between $83.47 and $93.90.

UBS upgraded its price target for Glaukos to $134 from $125, maintaining a "Buy" rating, while Stifel Nicolaus reduced its target to $115 from $140. Institutional activity highlighted divergent investor sentiment: Envestnet Asset Management cut its stake by 27.8%, while Whipplewood Advisors LLC increased holdings by 3,957.1%. Technical indicators signaled bearish momentum, with sell signals from short- and long-term moving averages and a MACD divergence. Resistance levels were identified at $93.36 and $99.19, with no immediate support below current levels.

Analysts remain divided, with ten "Buy" ratings, two "Hold" ratings, and one "Sell" rating. The stock’s 52-week range remains wide, between $77.10 and $163.71, reflecting ongoing uncertainty. Institutional ownership stands at 99.04%, with recent trades including Norges Bank’s $84.5 million stake and Commonwealth Equity Services LLC’s 12.9% position increase. The company reported Q2 earnings of -$0.24 per share, outperforming estimates but underscoring persistent operational challenges.

A backtesting strategy of buying the top 500 high-volume stocks and holding for one day generated a 166.71% return from 2022 to July 30, 2025, significantly outperforming the benchmark’s 29.18%. The approach’s success was attributed to momentum capture and risk management, with excess returns of 137.53% despite varying market conditions.