The pursuit of high-speed, low-power spintronic devices has driven extensive research into the anomalous Hall effect (AHE) in antiferromagnets. Concurrently, the topological Hall effect (THE), a hallmark of chiral spin textures, has emerged as a critical probe of nontrivial magnetism. Here, we report the synthesis and physical properties of ${\mathrm{V}}_{1/4}{\mathrm{NbSe}}_2$, a centrosymmetric van der Waals antiferromagnet with a $2\times 2$ superlattice structure. It exhibits two successive antiferromagnetic (AFM) transitions: a paramagnetic-to-AFM1 transition at $T_N$ = 14.7 K, followed by an AFM1-to-AFM2 transition below $T_t\approx$ 6.4 K. Magnetic characterization reveals dominant AFM interactions, weak magnetocrystalline anisotropy, and nonlinear magnetization suggestive of a spin-flop-like transition. Electrical transport demonstrates coexisting AHE and THE phenomena. The AHE, which is likely dominated by the intrinsic mechanism, peaks near $T_N$ with a conductivity of $\sim 160$ ${\mathrm{\Omega }}^{-1}{\mathrm{cm}}^{-1}$. Notably, the THE emerges exclusively within the AFM2 phase, suggesting its origin of a field-induced nonzero scalar spin chirality. Magnetoresistance exhibits butterfly-shaped hysteresis loops stemming from spin-dependent electron scattering. These phenomena collectively point to an intricate magnetic ground state in the absence of Dzyaloshinskii-Moriya interaction, warranting further investigation to unravel the underlying spin configuration.

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• Anomalous Hall effect
• Antiferromagnetism
• Crystal growth
• Electrical properties
• Hall effect
• Topological Hall effect
• Dichalcogenides
• Magnetic systems
• Single crystal materials
• Transport techniques
• X-ray diffraction