---
title: "Kalshi Terminates Donald Trump Jr. Advisory Post Over Polymarket Stake"
description: "The prediction exchange separated from Trump Jr. after 1789 Capital backed rival Polymarket's $1 billion funding round."
url: https://basisdesk.news/news/kalshi-ends-donald-trump-jr-advisory-role-polymarket
published: 2026-11-12T22:26:49.752Z
modified: 2026-11-12T22:26:49.752Z
section: Institutions & ETFs
author: Basis Desk Newsroom (AI-generated, source-verified)
sentiment: neutral
tickers: []
tags: [kalshi, polymarket, donald-trump-jr, prediction-markets, venture-capital]
license: Quote with attribution to Basis Desk (basisdesk.news). Not financial advice.
---

# Kalshi Terminates Donald Trump Jr. Advisory Post Over Polymarket Stake

The prediction exchange separated from Trump Jr. after 1789 Capital backed rival Polymarket's $1 billion funding round.

## At a glance

- **What happened:** Kalshi mutually ended its advisory relationship with Donald Trump Jr. on Nov. 12, 2026, after his fund backed rival Polymarket.
- **Why it matters:** The departure resolves a direct conflict of interest after Trump Jr.'s venture fund led a $1 billion funding round for Polymarket.
- **Who is affected:** Kalshi, Donald Trump Jr., 1789 Capital, and Polymarket.
- **What's next:** No next step announced.
- **Status:** announced
- **Primary source:** [Kalshi ends Donald Trump Jr. advisory role over Polymarket investment: Reuters](https://cointelegraph.com/news/kalshi-ends-donald-trump-jr-advisory-role-polymarket-investment?utm_source=rss_feed&utm_medium=rss&utm_campaign=rss_partner_inbound) — cointelegraph.com

## Key points

- Kalshi and Donald Trump Jr. mutually ended his advisory post following 1789 Capital's investment in Polymarket [1].
- Trump Jr.'s venture fund led a $1 billion round for Polymarket at a $21 billion valuation, pledging around $300 million [1].
- Kalshi denied political motivations, though internal sources cited concerns over Democrats winning both chambers of Congress [1].

## Editorial remark

- **Context:** Trump Jr. joined Kalshi as an adviser in January 2025, receiving equity valued at $300,000, prior to his fund backing its primary rival.
- **Impact:** Kalshi severs ties with a high-profile political figure as prediction market platforms navigate federal oversight and competitive rivalries.
- **Watch:** Market share shifts between Kalshi and Polymarket following the close of Polymarket's $1 billion funding round.

Event contracts platform Kalshi concluded its formal advisory ties with Donald Trump Jr. following his venture firm's decision to back direct competitor Polymarket, according to a Kalshi spokesperson cited by Reuters on Nov. 12, 2026 [1].

Discussions to part ways started in August after 1789 Capital, Trump Jr.'s investment vehicle, led a $1 billion capital raise for Polymarket that priced the competing firm at $21 billion [1]. The transaction included an anticipated $300 million injection from 1789 Capital [1]. A representative for Kalshi stated that both parties came to a mutual decision to discontinue the relationship because of the substantial capital committed to a competing venue, emphasizing that political factors were not involved in the split [1].

Trump Jr. originally took an advisory position at Kalshi in January 2025, receiving company shares valued at approximately $300,000 at that time, according to earlier reporting by the Financial Times cited in the report [1]. Despite Kalshi's statement dismissing political motivations, two individuals familiar with the discussions told Reuters that internal figures had expressed unease regarding the regulatory climate following a Democratic sweep of both congressional chambers in the midterm elections [1].

## Sources

1. [Kalshi ends Donald Trump Jr. advisory role over Polymarket investment: Reuters](https://cointelegraph.com/news/kalshi-ends-donald-trump-jr-advisory-role-polymarket-investment?utm_source=rss_feed&utm_medium=rss&utm_campaign=rss_partner_inbound) — cointelegraph.com, 2026-11-12

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Basis Desk Newsroom · AI-generated, source-verified · https://basisdesk.news/about/how-we-use-ai