---
title: "Weekly Recap | QUMSR.US -52.04%, a one-way slide"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/298101421.md"
description: "QuantumSphere Acquisition Corp (QUMSR.US) fell 52.04% this week to close at $0.0789, while the S&P 500 edged up 0.09%, leaving the stock about 52.13 percentage points behind the benchmark. The move was one-way from the start: Monday (31 Aug) opened flat at $0.1645 with no volume, Tuesday (1 Sep) slipped to $0.1490, Wednesday (2 Sep) dropped to $0.0704 on heavy volume, Thursday (3 Sep) bounced to $0.0900, and Friday (4 Sep) touched $0."
datetime: "2026-09-05T07:49:58.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/298101421.md)
  - [en](https://longbridge.com/en/news/298101421.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/298101421.md)
generator: "portal-rs"
---

# Weekly Recap | QUMSR.US -52.04%, a one-way slide

## The Week

QuantumSphere Acquisition Corp (QUMSR.US) fell 52.04% this week to close at $0.0789, while the S&P 500 edged up 0.09%, leaving the stock about 52.13 percentage points behind the benchmark. The move was one-way from the start: Monday (31 Aug) opened flat at $0.1645 with no volume, Tuesday (1 Sep) slipped to $0.1490, Wednesday (2 Sep) dropped to $0.0704 on heavy volume, Thursday (3 Sep) bounced to $0.0900, and Friday (4 Sep) touched $0.0502, the low end of the 60-day range, before settling at $0.0789. Weekly amplitude was 69.48%, and the Friday close sits below both the 20-day average of $0.145 and the 60-day average of $0.164.

## Key Events

The only material filing this week was an 8-K submitted on 3 September by QuantumSphere Acquisition Corp, disclosing a significant corporate matter. Earlier in the week, on 2 September, industry coverage ran a piece on consolidation among unclassified mergers, framing the 2026 market’s quiet absorption of fringe assets. The 8-K and the industry note form the week’s information thread, though the report itself does not single out QUMSR.US as the subject of a specific transaction.

## The Week Ahead

No company-specific earnings or events are scheduled for QUMSR.US next week. Macro data runs from 8 to 10 September: NFIB small business optimism on Tuesday, then a batch of labour and inflation prints on Thursday, including initial jobless claims, final demand PPI and its core reading, alongside the 10-year Treasury auction and existing home sales. These releases will set the risk appetite for small-cap, low-liquidity names, and any upside surprise in rates or inflation could amplify volatility in thinly traded tickers like this one.

## In Short

The week’s price action clashes with its volume profile. The stock halved in five sessions and printed a 60-day low, yet average daily volume of 111,489 shares stands far above the historical median of 64, and the latest session showed a turnover rate of 2.19% with retail money as the only net buyer among the latest capital-flow snapshot. What comes next depends on how the 8-K disclosure develops and whether next week’s macro data triggers a second wave of pressure on low-liquidity names.

*This article is generated by LongbridgeAI from market data, for information only and not investment advice.*

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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**