He declines the offer. Then he writes a book: "Uang Tidak Pernah Tidur – Tapi Kejujuran Bisa Bangun Pasar." (Money Never Sleeps – But Honesty Can Wake the Market.) "Di Wall Street, uang tidak pernah tidur. Tapi di Jakarta, seorang anak lupa bahwa ibunya selalu berdoa sebelum pasar buka." (On Wall Street, money never sleeps. But in Jakarta, a son forgot that his mother always prayed before the market opened.)

"Arya, makan dulu, Nak."

But Arya had one thing Derek underestimated: a photographic memory of every trade he’d ever seen. Fast-forward 16 years. Arya is 40, now working as a quiet night-shift supervisor at a data center in Queens. But every night, he studies the market patterns, the dark pools, the flash crashes.