excessive trading (sometimes also known as churning)

an intermediary excessively trades securities of an investor for the purpose of increasing his or her commissions, rather than to further the investor's investment objective (IW)

In other languages:

• negozju eċċessiv [MT] - intermedarju jinnegozja b'mod esaġerat titoli ta' sigurtà ta' investitur biex ikabbar il-kummissjoni tiegħu aktar milli biex imexxi 'l quddiem l-objettivi ta' investiment ta' l-investitur (IW)
• commercio eccessivo [IT]