Luminus Management disclosed the purchase of 87,120 shares of Kirby Corporation (KEX -2.17%), with an estimated transaction value of $8.8 million in an Oct. 3 SEC filing.What happenedAccording to the Oct. 3 filing with the Securities and Exchange Commission, Luminus Management increased its stake in Kirby Corporation by over 87,000 shares during the third quarter of 2025. The estimated trade value is $8.75 million, based on the average closing price for the quarter. Following the transaction, the fund holds ...