New York, Jan 5, 2026, 11:36 (EST) — Regular session
- Eos Energy shares were up about 2% in midday trading, extending a volatile start to 2026.
- Options activity surged in the last session, a sign traders are still chasing big upside swings.
- Investors are watching Friday’s U.S. jobs report and Eos’ next earnings update expected in early March.
Shares of Eos Energy Enterprises Inc rose 1.9% to $13.22 on Monday, building on a sharp move from the prior session as traders leaned into long-duration energy storage names. The stock, which trades on the Nasdaq under the symbol EOSE, touched $13.55 at the highs and traded as low as $13.01.
The move matters because Eos has become a high-volatility proxy for the storage buildout theme, and that attracts fast money when risk appetite returns. It also sits in a part of the market where positioning can matter as much as fundamentals, especially when investors are hunting for short-covering rallies.
Macro is also back in the driver’s seat early in the year, with traders bracing for Friday’s U.S. nonfarm payrolls report (Jan. 9) as they reassess the path for Federal Reserve policy. Markets are pricing in about 60 basis points of rate cuts this year, LSEG data cited by Reuters showed.
In the storage complex, moves were mixed on Monday, after big swings late last week. Fluence Energy fell 2.3% while Stem gained 1.3%, with Energy Vault down 3.4% and ESS Tech up about 0.5%.
Options activity in Eos has been elevated, adding to the sense of a momentum-driven tape. On Friday, 92,958 Eos options contracts had traded by mid-afternoon, according to a Nasdaq options-flow report.
Short interest remains a focal point for traders who see the stock as prone to abrupt moves. As of Dec. 15, about 82.8 million shares were sold short, or roughly 29.7% of the public float, MarketBeat data showed — a high level that can amplify rallies when shorts rush to cover.
Broader energy-storage demand is also feeding the narrative, even as different technologies compete for share. “Energy storage is likely to become a game changer for lithium,” Jinyi Su, an analyst at consultancy Fubao, told Reuters in a report on storage-driven demand. Reuters
Eos designs and manufactures zinc-based battery energy storage systems, a chemistry the company pitches as a long-duration alternative to lithium-ion for grid and industrial use. Reuters company information describes its focus on zinc-based storage and related battery-management software.
But the setup cuts both ways. Momentum trades can unwind quickly if bond yields jump, risk appetite fades, or the company’s execution fails to match expectations — and high short interest can magnify downside just as easily as it can fuel a squeeze.
