This week, which stocks lagged or dragged? Weekly Winners column keeps up with market trends, helping Tigers sort out the week's hottest sectors, stock winners and important news.

Below are top 10 S&P 500 stock gainers for the week ended Mar. 7:

Moderna Shares Surge 15% After CEO Stephane Bancel Purchases $5 Million In Company Stock

Moderna recently reported that its CEO, Stephane Bancel, made significant stock purchases totaling approximately $5 million, a notable move considering the stock’s 68% decline over the past year. According to InvestingPro analysis, the stock is currently trading near its 52-week low of $29.25 and appears undervalued based on Fair Value estimates. The transactions were conducted on March 3, 2025, through Boston Biotech Ventures, LLC, where Bancel is the majority equity unit holder and the sole managing member.

Bancel acquired a total of 160,314 shares of Moderna’s common stock, with purchase prices ranging from $31.04 to $31.53 per share. These open market purchases reflect Bancel’s continued investment in the biotechnology company, known for its mRNA-based therapeutics and vaccines. InvestingPro data shows the company maintains strong liquidity with a current ratio of 3.67, though it faces challenges with negative earnings and cash burn.

Moderna shares surged 15% this week.

Director Makes Bold Move with Major FMC Stock Purchase!

Director Carol Anthony Davidson has made a significant investment by purchasing 6,000 shares of FMC stock, with the transaction valued at $223,980.

Why Huntington Ingalls (HII) Stock Is Trading Up This week

Shares of aerospace and defense company Huntington Ingalls (NYSE:HII) jumped 12% this week after President Trump announced plans to help the shipping industry, including funding via tax incentives, during a session with Congress. He added, "We are also going to resurrect the American shipbuilding industry, including commercial shipbuilding and military shipbuilding." This is good news for companies like Huntington Ingalls, as the comments suggest the shipping industry might enjoy favorable policies and regulations under the Trump administration if the plans take shape.

International Expansion Will Fuel Brown-Forman's Return to Growth

Brown-Forman expects a return to organic net sales growth in its fiscal 2025, driven largely by gains in international markets. Turkey and Brazil both notched double-digit growth in F3Q, offsetting flat sales in Mexico, where a challenging economic environment dampened discretionary spending and caused consumers to trade down. "The operating environment continues to be incredibly dynamic and many uncertainties remain, particularly on the topic of tariffs," CEO Lawson Whiting says on a call with analysts. Even so, the company backs its guidance for 2% to 4% organic sales growth this fiscal year. Shares rise 9.5%.