Marvell Technology shares rose 4.16% to $254.40 after the chipmaker unveiled new 2-nanometer optical technologies aimed at increasing bandwidth and reducing power consumption in AI data centers. The announcement advances Marvell’s connectivity portfolio as large computing clusters require faster links between processors, accelerators, memory and networking equipment. Marvell will demonstrate 400G-per-lane optical PAM4 technology for 3.2T connectivity, an 800G ZR and ZR+ pluggable system powered by its Libra 2nm coherent DSP with MACsec security, and 1.6T ZR and coherent-lite O-band technologies. The company will present the technologies at ECOC 2026 in Málaga from Sept. 20 through Sept. 24, alongside 224G SerDes, coherent interconnects and optical memory fabric products. Marvell is also developing co-packaged optics for AI accelerators, switches and large computing fabrics, including a platform demonstrated at 102.4 Tbps using 200G-per-lane silicon photonics. The shares had earlier been reported up 2.89% at $251.30 in premarket trading, while technical indicators, analyst sentiment and ETF exposure continued to point to strong momentum alongside a premium valuation.