https://www.afr.com/companies/finan...e-pay-rivalled-solomon-s-110m-20230307-p5cpx8 Index-rebalancing business....you gotta love his job with several hundred billion $ in stock inventory at GS.... BTW: clever guy - quits now that QE has ended and QT not to end for foreseeable future ;=)
He was able to buy the stocks to be added to the index at cheaper price and unload the stocks from the index at higher price thus making +ve profit. That would be my guess.