Polymarket accuses Kalshi of commercial espionage, claiming that the release of multiple products is "too coincidental."

The prediction market platform Polymarket believes that its competitor Kalshi may be engaging in corporate espionage against its New York office and employees. Polymarket's marketing director confirmed that the company is conducting an internal investigation and stated that "there are too many coincidences," suspecting that Kalshi has malicious intentions.

Reports indicate that Polymarket has compiled an internal dossier titled "Imitators," documenting about a dozen suspicious incidents. These include Polymarket's original plan to launch a free grocery flash event on February 12, while Kalshi launched a similar event about 9 days earlier; additionally, Polymarket was set to announce its perpetual contract product plan on April 21, but about 1 hour before the announcement, the tech media The Information reported that Kalshi was also preparing to launch a similar product.

Polymarket employees are also concerned that the venture capital firm Paradigm, which supports Kalshi, has an office directly across from theirs, posing a risk of employees' computer screens being spied on. It is reported that Polymarket installed privacy film on some office windows this spring.

In response, a Kalshi spokesperson denied all allegations, stating that Polymarket's suspicions are "sad and almost delusional."