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 the top 10 S&P 500 stock gainers for the week ended Apr. 18:

Eli Lilly Rockets After Solidifying Its Lead For A Weight-Loss Pill

Eli Lilly stock jetted higher Thursday after the company said its diabetes and weight-loss pill helped patients lose up to 16 pounds over the course of 40 weeks.

The news solidifies Lilly's lead in developing an oral treatment for obesity. It also comes less than a week after Pfizer (PFE) scrapped development of its own late-stage obesity pill after one patient experienced a potential drug-induced liver injury. Pfizer is still testing a daily pill called PF-07976016.

Dollar Tree CFO Stewart Glendinning Buys $1.24 Million in Stock

Stewart Glendinning, Chief Financial Officer of Dollar Tree, recently acquired a significant amount of the company’s common stock, according to a recent SEC filing. On April 14 and April 15, Glendinning purchased a total of 17,000 shares, with a combined value of approximately $1.24 million. The shares were acquired at prices ranging from $72.50 to $72.8269 per share. Following these transactions, Glendinning now directly owns 49,353 shares of Dollar Tree stock.

Oil Prices Rise as U.S. Sanctions Chinese Importers of Iranian Crude

Crude oil futures defied a tech-led slide in equities and posted solid gains Wednesday, as the Trump administration issued new sanctions targeting Iran's oil exports, including against a China-based "teapot refinery," the latest U.S. policy move that has threatened to drive Iran's oil exports down to zero.

The move comes as the U.S. re-launched negotiations with Iran over its nuclear program this month, while Iran Foreign Minister Abbas Araqchi said the country's right to enrich uranium is not negotiable, ahead of the next round of talks in Rome.

Energy stocks easily topped the day's sector leaderboard on the S&P 500, comprising four of the day's top six gainers on the index: apache +3.2%, Targa Resources (TRGP) +2.7%, Devon +2.7%.

HPE Stock Gains as Elliott Builds Over $1.5 Billion Stake in HP Enterprise

Elliott Investment Management has built a large position worth more than $1.5 billion in Hewlett Packard Enterprise, according to people familiar with the matter.

Elliott plans to engage with the software and networking company to help it boost value, said the people, who asked to not be identified because the details aren’t public. The investment makes Elliott one of the company’s top five shareholders, according to data compiled by Bloomberg. Elliott’s exact intentions at HPE couldn’t be immediately learned.

Shares in HPE jumped as much as 5% on Tuesday.