- Maxwell (MXWL +15.3%) soared to new 52-week highs today on volume more than 5x its daily average.
- No news has hit the wires to explain the move, which comes two days after Tesla provided details for its planned lithium-ion battery gigafactory.
- Hopes that Tesla will use Maxwell's ultracapacitors in its EVs have been around for a while. Elon Musk has suggested ultracapacitors, which can recharge in a small fraction of the time needed by lithium-ion cells, could yield an energy storage breakthrough. But he also admits major improvements in energy density are needed before they can replace lithium-ion.