Delek US Holdings (DK) Soars 34.10% in 10 Days, Mizuho Upgrade Drives Rally

Delek Us Holdings (DK) shares surged 0.75% today, marking the 10th consecutive day of gains, with a remarkable 34.10% increase over the past 10 days. The stock price reached its highest level since March 2025, with an intraday gain of 2.08%.

The strategy of buying DK shares after they reach a recent high and holding for one week resulted in a 3.24% return over the past five years, significantly underperforming the benchmark with an excess return of -83.90% and a Sharpe ratio of 0.01, indicating poor risk-adjusted returns and a high maximum drawdown of -66.27%..

Mizuho has upgraded Delek US Holdings (DK) from Neutral to Outperform, with a revised price target of $23, up from the previous $22. This upgrade occurred on May 13, 2025, and reflects an improved outlook for the company. The upgrade is likely to have contributed to the recent surge in the stock price, as investors respond positively to the revised outlook and higher price target.