2 papers
econ.GN2025
Wealth or Stealth? The Camouflage Effect in Insider Trading
Jin Ma, Weixuan Xia, Jianfeng Zhang
We consider a Kyle-type model where insider trading takes place among a potentially large population of liquidity traders and is subject to legal penalties. Insiders exploit the li…
math.OC2025
Characterizing nonconvex boundaries via scalarization
Jin Ma, Weixuan Xia, Jianfeng Zhang
We present a unified approach for characterizing the boundary of a possibly nonconvex domain. Motivated by the well-known Pascoletti--Serafini method of scalarization, we recast th…