Editor's Note: the "Trending Saudi Stocks" column tracks the day's top bullish stocks in the KSA market, aiding investors in promptly identifying opportunities for potential gains.

At the close of 13/05/2026, the Tadawul All Shares Index dropped by 0.17%, closing at 11020.07 points; the Parallel Market Capped Index dropped by 0.13%, closing at 22764.02 points. Sahm has compiled the Top 10 Daily Stock Price Gainers in the KSA market.

The Top 10 Daily Gainers in the KSA market are listed as follows:

Sustained Infrastructure Holding Co.: The daily gain is 8.7%, Q1 2026: 25% revenue growth, 0.80 SAR dividend declared, strong quarterly performance reported.

Sustained Infrastructure Holding Co. (SISCO HOLDING) operates as a publicly traded entity on the Saudi Stock Exchange (Tadawul) since August 1998. The company functions within the Capital Goods sector, specializing in construction and engineering services. Headquartered in Jeddah, Saudi Arabia, the organization was incorporated in November 1988 and maintains its primary business operations in infrastructure development and related engineering solutions.

In a noteworthy development, the possible reason for the stock price increase of 2190.SA (Sustained Infrastructure Holding Co.) may be attributed to robust Q1 2026 financial performance and attractive dividend policy. The company reported strong quarterly results with net profit reaching 26.1 million Saudi Riyals, up 5.668% year-over-year, while revenue surged 25.007% to 439.4 million Saudi Riyals, primarily driven by 30% growth in multipurpose terminal operations and improved international port services. The board's recommendation to distribute 0.80 Saudi Riyals per share in cash dividends, representing 8% of par value with total distribution of 65.28 million Saudi Riyals, demonstrates commitment to shareholder returns. Enhanced profitability metrics, including 22.075% growth in gross profit and 9.553% increase in operating profit, alongside improved earnings per share from 0.3 to 0.32 Saudi Riyals, reinforced investor confidence. The unqualified audit opinion further validated financial transparency, contributing to today's 8.7% surge.

Rabigh Refining and Petrochemical Co.: The daily gain is 4.6%, posts 14.7B riyal profit turnaround; analysts boost price targets by 32% amid strong performance.

Rabigh Refining and Petrochemical Company operates as a publicly traded entity on the Saudi Stock Exchange under the ticker TDWL, having commenced trading in January 2008. The corporation functions within the energy sector, specializing in oil and gas refining and marketing operations. Headquartered in Mecca, Saudi Arabia, the company was incorporated in September 2005 and conducts business under the commercial name Petro Rabigh.

In a noteworthy development, the possible reason for the stock price increase of 2380.SA (Rabigh Refining and Petrochemical Co.) may be attributed to a remarkable financial turnaround and upgraded analyst expectations. The company successfully transformed from a 6.908 billion Saudi Riyal loss in Q1 2025 to a 14.662 billion Saudi Riyal profit in Q1 2026, securing its position among the top 10 most profitable companies on the Saudi exchange. Analysts have substantially revised their outlook, raising revenue forecasts by 11% and projecting 2026 revenues at 530 billion Saudi Riyals, representing a potential 36% growth compared to the past 12 months. This growth rate significantly outperforms the industry average of 1.1% annual revenue growth. The consensus target price surged 32% to 14.65 Saudi Riyals, reflecting enhanced confidence in the company's prospects. The stock's technical performance has been exceptional, with an RPS score of 99.38, outperforming over 99% of market peers, and recently hitting a 52-week high of 15.35 Saudi Riyals while being newly included in recommended stock radar lists.

Al Sagr Cooperative Insurance Co.: The daily gain is 4.3%, Major shareholder increases stake following strong market performance, demonstrating confidence in company's growth prospects and financial stability.

Al Sagr Cooperative Insurance Company operates as a publicly traded entity on the Saudi Stock Exchange under the ticker TDWL, having commenced trading in February 2008. The organization specializes in multi-line insurance services within the broader insurance sector. Headquartered in Khobar, Saudi Arabia, the company was incorporated in February 2008 and maintains its primary business focus on comprehensive insurance solutions across multiple product lines.

In a noteworthy development, the possible reason for the stock price increase of 8180.SA (Al Sagr Cooperative Insurance Co.) may be attributed to strong insider confidence signals and positive market dynamics. The significant accumulation by major shareholder Abdul Rahman Hassan Abbas Sharbatly, who systematically increased his stake from 7.69% to 8.05% through multiple transactions between April 29 and May 5, demonstrates substantial insider confidence in the company's prospects. This strategic buying pattern, including incremental purchases of 0.06%, 0.14%, and 0.16% respectively, suggests the shareholder views the stock as undervalued. The 4.3% daily gain, combined with a robust 13.6% year-to-date performance, reflects sustained positive momentum in the Saudi insurance sector. With a current market capitalization of 3.3 billion Saudi Riyals, Al Sagr appears well-positioned to benefit from Saudi Arabia's expanding insurance market, driven by economic diversification initiatives and increasing insurance penetration rates across the kingdom.