Shares of TG Therapeutics (TGTX) tumbled 5.04% in pre-market trading on Tuesday, following a reiterated Sell rating from Bank of America Securities analyst Alec Stranahan. The negative sentiment expressed by the analyst appears to have sparked a sell-off among investors, leading to the significant drop in the company's stock price.

The analyst's decision to maintain a Sell rating on TG Therapeutics suggests ongoing concerns about the company's growth prospects and potential competitive challenges in the pharmaceutical sector. While the specific details of the analyst's report were not fully disclosed, such ratings typically reflect pessimism about a company's future performance and often lead to downward pressure on stock prices.

Investors will be closely watching TG Therapeutics' performance throughout the trading day to see if the stock can recover from this pre-market slump or if the negative sentiment will persist. The company may need to address these concerns and provide a strong outlook to regain investor confidence in the near term.