EL7.AI
StocksMediumUpdated×2•Originally published 17 August 2026•Updated 18 August 2026•
1 min read

Jane Street Posts $15B July Loss Amid Momentum Reversal and Bitcoin ETF Rebound

Key Facts

1Jane Street recorded a $15 billion loss in July, marking its first down month in a decade.
213F filings revealed the firm held massive positions in momentum stocks like Broadcom, Micron, and Dell prior to their decline.

In a move highlighting the risks of high-concentration momentum trades, Jane Street recorded a massive $15 billion loss during July 2026. According to reports, this marks the firm's first down month in a decade, ending a historic streak of monthly profitability. The loss was primarily driven by a sharp reversal in high-leverage momentum trades, particularly as the technology sector experienced significant volatility.

Latest 13F filings revealed that the firm maintained holdings in BlackRock and Fidelity Bitcoin ETFs, with these stakes rebounding after a significant 71% reduction reported in Q1 2026. Simultaneously, the firm held massive positions in leading momentum names including Broadcom, Micron, and Dell. Per market data, AVGO traded at $397.54 and MU traded at $1,028.89 (as of August 17, 2026), contributing to the broader monthly decline.

Traders are currently monitoring liquidity levels in affected tech names, with CRWV closing at $105.26 (as of August 14, 2026). Looking at the economic calendar, there are no direct upcoming catalysts for these instruments in the next seven days; however, the market is focused on how the interplay between digital asset exposure and tech volatility will influence institutional sentiment following spikes in Total Return Swap funding rates.