Ten members of the Business Journal’s annual OC’s Wealthiest list made the recent Forbes 400 list, which ranks the wealthiest Americans by estimated net worth.

The Business Journal list, which was published in August, had 41 entries, with a minimum net worth of $250 million. The Forbes list starts at “a record $1.7 billion.”

Irvine Company Chairman Donald Bren was No. 1 on the Business Journal list, with an estimated net worth of $16.2 billion. Forbes ranked him at No. 30, with an estimated $15.2 billion. He was the top representative of the real estate sector on the Forbes list.

Olen Properties founder and owner Igor Olenicoff ranked No. 2 on the Business Journal list with $3.5 billion. He was ranked No. 164 on the Forbes list, with $3.6 billion.

The Business Journal also ranked David Sun and John Tu—cofounders of Fountain Valley-based Kingston Technology Inc.—at No. 2 with the same estimates. Forbes assigned $4.2 billion to each of the duo, good for sharing the No. 133 spot.

We ranked Henry Samueli No. 5 with $3 billion. Forbes estimated that the cofounder of Irvine-based chipmaker Broadcom Corp. had about $2.6 billion, ranking him at No. 256.

No. 6 on the Business Journal list was Oakley Inc. founder Jim Jannard, with an estimate of $2.9 billion. Forbes ranked him No. 138, at $4 billion. Our estimate for Jannard has generally trailed those of other publications since 2012, when he said he had given away a significant portion of his personal wealth.

We ranked Bill Gross No. 7 with an estimated $2.5 billion in net worth. The cofounder and former chief investment officer of Pacific Investment Management Co. in Newport Beach, who now is with Janus Capital Group, made the Forbes list at No. 342, with an estimated $2 billion.

We ranked real estate developer and investor George Argyros the eighth wealthiest person in Orange County, with $2.25 billion in personal fortune. He was ranked No. 342 by Forbes, at $2 billion.

We ranked Broadcom cofounder Henry Nicholas III No. 9 with $2.2 billion in estimated wealth. Nicholas, who was a newcomer to the Forbes list last year, returned at No. 358, with $1.9 billion.

We had Los Angeles Angels of Anaheim owner Arturo Moreno at No. 10, with $1.7 billion. Moreno came back to the Forbes list after skipping a couple of years, at No. 375, with $1.8 billion.