Larry Ellison Pledges $40 Billion to Bolster Warner Bros. Bid

Larry Ellison is throwing his personal fortune behind Paramount Skydance Corp.’s bid for Warner Bros. Discovery Inc., aiming to give his son’s company an advantage in a fiercely contested takeover battle with Netflix Inc.

Both suitors moved on Monday to strengthen the financial backing for their offers, though they stopped short of increasing their bids. Netflix refinanced a portion of its planned $59 billion of debt as a way to ensure a lasting investment-grade rating — a key advantage it holds over the lower-rated Paramount.

But it’s the personal guarantee of Ellison, the world’s fifth-richest person with a ...