Legal challenges are continuing to pile up against casino mogul Steve Wynn, who has been hit with a new proposed class action suit in New York filed by investors who say his company's failure to reveal Wynn's alleged pattern of sexual misconduct has hurt them financially.

The proposed securities class action, filed on Tuesday in the U.S. District Court for the Southern District of New York, comes on the heels of two shareholder derivative suits filed against Wynn Resorts Ltd. in Nevada state court.

The Wall Street Journal revealed Wynn's alleged misconduct, which included the sexual assault of a manicurist to whom Wynn reportedly paid a $7.5 million settlement, in a report published on Jan. 26.

The Journal also spoke with former and current employees of Wynn's who described incidents in which Wynn inappropriately touched female employees or exposed himself to them.

In a statement to the Journal, Wynn said that the idea that he would “assault any woman is preposterous.”

In the proposed class action filed in New York, two investors allege that, after the release of the Journal's report, the Massachusetts Gaming Commission said it would launch a probe into the allegations of sexual misconduct against Wynn.

At this news, the plaintiffs say, Wynn's stock price fell more than $20 per share to $180.

On Feb. 6, Wynn stepped down as CEO of Wynn Resorts earlier this month, citing an “avalanche of negative publicity.”

One week later, media outlets reported that two women filed complaints with Las Vegas police accusing Wynn of sexually assaulting them in the 1970s. Following the reports, on Feb. 14 the company's stock price fell to $164 per share, or $36 less than the value of a share on Jan. 25.

The investors allege that, from February 2014 to the day before the Journal's report was published, they and members of the proposed class purchased Wynn Resorts securities at inflated prices.

Jeremy Lieberman and J. Alexander Hood of Pomerantz represent the investors. Wynn executives Craig Scott Billings, Stephen Cootey and Matthew Maddox are also named as defendants in the suit. Maddox, president of the company, has been named its CEO.

Earlier this month, the Norfolk County Retirement System, a employee retirement plan in Massachusetts; and the Pennsylvania-based Operating Engineers Construction Industry and Miscellaneous Pension Fund filed separate shareholder derivative suits in Clark County District Court in Nevada alleging breaches of fiduciary duty by Wynn, Wynn Resorts general counsel Kimmarie Sinatra and by the company's board of directors.

Wynn Resorts declined to comment on the shareholder derivative suits.