IMO, Byrd's purchase of LTV shares in Nov' '63 is potential evidence of his foreknowledge of the assassination.
In trying to find the actual proof of this insider trading I came across this extraordinary article by Jeremy Kuzmarov, "LBJ Insiders D.H. Byrd and James Ling Bought 132,000 Shares of Stock in Defense Contractor LTV in November 1963 Around Time of the JFK Assassination" -
https://covertactionmagazine.com/2024/11/21/lbj-insiders-d-h-byrd-and-james-ling-bought-132000-shares-of-stock-in-defense-contractor-ltv-in-november-1963-around-time-of-the-jfk-assassination/"In November 1963, the month of JFK’s assassination, two of Lyndon B. Johnson’s closest friends, David H. Byrd and James Ling, bought 132,000 shares of Ling-Temco-Vought (LTV) stock at approximately $16 per share through the Alpha Omega Corporation investment vehicle.
Byrd already owned 19,948 shares of LTV stock at this time, and his wife Mattie owned another 15,796 shares, which were collectively worth about $571,904. As a founder of one of the companies that merged to become LTV, Ling also (like Byrd) owned thousands of shares before the November 1963 purchase.
...
By 1967, in the middle of the Vietnam War, LTV stock rose to a whopping $169 per share and had a total value of $22,308,000 (which in 2024 dollars would be equal to approximately $207.3 million)"Although there are certain aspects of Kuzmarov's article I may not necessarily agree with, it is a source of invaluable information linking Byrd to the assassination.
As a motive for killing JFK, Byrd knew that LBJ would reward him with defense contracts and the maintenance of the oil depletion allowance.
But it wasn't just the countless millions he stood to make. Byrd was ultra far-right, he personally met Hitler and was impressed by his "sincerity"!!
He also "developed a close friendship with one of Heinrich Himmler’s former assassins, Werner von Alvensleben, a double agent in World War II who owned and operated the big game hunting company that Byrd allegedly traveled to Mozambique with at the time of the JFK assassination."
There is no surprise that Byrd was out of the country at the time of the assassination,
"In the late 1930s, Byrd co-founded the Civil Air Patrol (CAP), an Air Force auxiliary used for covert operations. As a CAP recruit, Lee Harvey Oswald was sent to the Army Counterintelligence School in Maryland to “be taught the Russian language, Russian military tactics, Russian politics and all characteristics of the Russian people.”Another connection between Byrd and Oswald is Georges De Morenschildt, the flamboyant socilaite who, for some truly inexplicable reason, took the poverty-stricken, anti-social, wife-beating, delusional loser, Oswald, under his wing.
Go figure.