June 4 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.

- Meta META.O has repeatedly pushed back plans to release its new Muse Spark AI model API to developers, and as of Tuesday, had no scheduled launch date.

- New World screwworm, a parasitic fly that eats warm-blooded animals alive, has been found in a calf in Texas, the U.S. Department of Agriculture said, exposing the nation's cattle herd to a serious new threat.

- Artificial intelligence market-research platform AlphaSense is being valued at $7.5 billion in a fresh round of funding, raising money from a slate of investors ahead of a possible initial public offering.

- Top artificial-intelligence executives are joining security experts in calling for Congress to protect against biological threats posed by AI, adding to growing pressure on lawmakers to address the technology’s risks.

- Bill Ackman’s Pershing Square PSHP.L is selling its remaining stake in Universal Music Group UMG.AS after the company rejected its $65 billion takeover bid.

- Real-estate brokerage Compass COMP.N is under investigation by the antitrust bureau of the New York attorney general’s office, acquiring rival Anywhere Real Estate earlier this year.