The 2026 PGA Championship is here, and Kalshi's prediction markets are already moving. The end-of-round-one leaderboard market has pulled in over $3.3 million in volume before a single shot has been hit at Aronimink Golf Club in Newtown Square, Pennsylvania. In a 156-man field, first-round leader markets are always going to be distributed. What matters is where the money is concentrating and where it's quietly walking away. PGA Championship End of Round 1 Leader | Kalshi Market Kalshi Scottie Scheffler | 5.3% Scheffler is the favorite, as he almost always is. His 5.3% price has slipped 1.1% in recent trading, but he still sits at the top of the board. He has been in contention every week, he's the most consistent ball-striker on tour, and Aronimink's classic Donald Ross design rewards precision and patience. Both of those describe Scheffler's game pretty well. That said, 5.3% is not a lock.…