Answer by taking a quote from the following article:

Sheldon Gary Adelson (pronounced ; born August 4, 1933) is an American business magnate, investor, and philanthropist. He is the founder, chairman and chief executive officer of Las Vegas Sands Corporation, which owns the Marina Bay Sands in Singapore, and is the parent company of Venetian Macao Limited, which operates The Venetian Resort Hotel Casino and the Sands Expo and Convention Center. He also owns the Israeli daily newspaper Israel Hayom and the American daily newspaper Las Vegas Review-Journal. Adelson, a lifelong donor and philanthropist to a variety of causes, also founded the Adelson Foundation in 2007, at the initiative of his wife, Miriam.

In 2007, Adelson made an unsuccessful bid to purchase the Israeli newspaper Maariv. When this failed, he proceeded with parallel plans to publish a free daily newspaper to compete with Israeli, a newspaper he had co-founded in 2006 but had left. The first edition of the new newspaper, Israel Hayom, was published on July 30, 2007. On March 31, 2014, Adelson received the go-ahead from a Jerusalem court to purchase Maariv and the conservative newspaper Makor Rishon. In 2016 Adelson's attorney announced that he does not own Israel Hayom, it is owned by a relative of his.  According to a Target Group Index (TGI) survey published in July 2011, Israel Hayom, which unlike all other Israeli newspapers is distributed for free, became the number-one daily newspaper (on weekdays) four years after its inception. This survey found that Israel Hayom had a 39.3% weekday readership exposure, Yedioth Ahronoth 37%, Maariv 12.1%, and Haaretz 5.8%. The Yedioth Ahronoth weekend edition was still leading with a 44.3% readership exposure, compared to 31% for the Israel Hayom weekend edition, 14.9% for Maariv, and 6.8% for Haaretz. This trend was already observed by a TGI survey in July 2010.  In 2011, the Israeli press said that Adelson was unhappy with coverage of him on Israeli Channel 10, which alleged that Adelson had acquired a casino license in Las Vegas inappropriately through political connections. The channel apologized after Adelson threatened a lawsuit. This led to the resignations of the news chief, Reudor Benziman; the news editor, Ruti Yuval; and the news anchor, Guy Zohar, who objected to the apology. After two months of deliberations, the Israeli Second Authority for Television and Radio ruled that although there were some flaws in the manner in which the apology had been conducted, the decision to apologize had been correct and appropriate.

Does Adelson still own the newspaper?
In 2016 Adelson's attorney announced that he does not own Israel Hayom, it is owned by a relative of his.