In this Letter, we report on a large magnetic field-induced stress of 14.4 MPa/T and low hysteresis 50 MPa in polycrystalline Ni44.1Co5.0Mn36.1In13.4Cu1.4 alloy, rendering it as promising candidate for high-energy output high-efficient actuators. The magnetostress mainly originates from the transformation entropy change 15.4 J/(kg K) high sensitivity phase temperature to field −9.2 K/T. Further...