Five prominent whale traders have collectively placed a $150,000 bet on the decentralized exchange Lighter's airdrop occurring before December 31. The traders, identified as jami116, jeetventures, munji, iamweetarded, and another, have taken a 'Yes' position on Polymarket, a prediction market platform. With three weeks remaining until the target date, the market indicates a 77% probability of the airdrop happening, as Lighter approaches its token generation event (TGE).