Key Highlights

  • T-REX 2X Long EOSE Daily Target ETF (CBOE:EOSU) fell 43.11 percent over the week and is down 99.13 percent since its January 14, 2026 launch, changing hands at USD 4.79 after a 6.21 percent rebound on the day.
  • Eos Energy Enterprises (NASDAQ:EOSE) touched a 52-week low of USD 3.01 on September 28, after a 21.92 percent slide on September 25 to USD 3.17 on heavy volume.
  • Legal investigation notices and a registration covering up to 56.5 million resale shares, with no cash to Eos, sharpened dilution worries.
  • Sister fund Corgi EOSE 2x Daily ETF (CBOE:EO) lost 48.22 percent in the week and sits 77.04 percent below its all-time high.

What EOSU is and how its daily reset works

T-REX 2X Long EOSE Daily Target ETF (CBOE:EOSU) is issued by Tuttle Capital Management under the T-REX banner and trades on Cboe BZX. It launched January 14, 2026, carries a 1.50 percent expense ratio and held about USD 9.1 million in assets. Swaps deliver 200 percent of the daily move in Eos Energy Enterprises (NASDAQ:EOSE), reset every session. A 1-for-25 reverse split took effect April 15, 2026. Corgi's EOSE fund (CBOE:EO), launched June 30, 2026 with a 0.45 percent expense ratio and about USD 88,000 in assets, follows the same 2x daily idea.

Why Eos Energy Enterprises fell

Eos Energy Enterprises (NASDAQ:EOSE) makes zinc-based battery storage systems for utilities and commercial customers. Its latest Quarterly Report showed a loss of USD 1.20 per share against a consensus loss of USD 0.19, though Revenue of USD 68.78 million edged past estimates. B. Riley cut its target from USD 8 to USD 5. This week added legal and Supply pressure: securities law firms announced investigations on September 24, and the company registered up to 56.5 million shares for resale, with the stock down about 9 percent that day. On September 25 it dropped 21.92 percent from USD 4.06 to USD 3.17, with no confirmed trigger reported, and closed at USD 3.085 on September 28. A USD 87 million Department of Energy advance and a Google-linked grid project offer some support.

Why a 2x fund can lose more than twice the stock

A daily 2x fund doubles each day's return, not the multi-week return. Volatility decay explains the gap. If a stock falls 10 percent then rises 10 percent, it ends 1 percent lower, while a 2x fund falls 20 percent then gains 20 percent, ending 4 percent lower. Eos Energy Enterprises (NASDAQ:EOSE) is down roughly 73 percent this year by one measure, yet simple doubling would imply a loss above 100 percent, which is impossible. The fund's 99.13 percent slide shows path dependence at work, since daily Rebalancing makes swings costly even when the stock later recovers.

Where Things Stand

It depends, and the evidence leans cautious. A 6.21 percent bounce in T-REX 2X Long EOSE Daily Target ETF (CBOE:EOSU) sits against a 43.11 percent weekly loss, a 78.16 percent three-month decline and a reverse split already on the record. For Eos Energy Enterprises (NASDAQ:EOSE), the bull case rests on DOE funding and grid partnerships, while the bear case rests on losses, insider sales of 776,543 shares last quarter and the resale overhang. Institutions tend to treat such funds as tactical tools because the daily reset makes outcomes path dependent. This article is not a recommendation.