Anthropic's top short seller on Hyperliquid increased holdings to a $70.5 million short position with $1.41 million in unrealized gains after the AI company set its IPO range at $70 to $78 per share, while pre-IPO contracts trade near $104.

Polymarket launches its first perps trading competition, paying $50K to the top 50 traders with 3× boosted scoring on Anthropic pre-IPO shares through November 16.