Quantumsphere Acquisition Corp. Units (QUMSU) Stock Price History
Historical prices from 2025 to 2026
- 1M
- -4.4%
- 3M
- +1.8%
- YTD
- +1.5%
- 1Y
- +3.1%
- 3Y
- +1.0%
- 5Y
- +0.6%
Loading 10-year price history...
QUMSU Historical Performance
QUMSU Annual Returns
Year-by-year price performance · 2025–2026
- 2025 annual price return
- +1.6%
- 2026 annual price return
- +0.6%
QUMSU Stock Price Trajectory (2025–2026)
As of June 30, 2026, Quantumsphere Acquisition Corp. Units (QUMSU) trades at $10.33, representing a +3.1% return over the past year. The stock has delivered a +4.8% total return over five years (+0.6% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $11.39 on April 16, 2026. From this peak, QUMSU has corrected -9.3%.
When compared to Financial Services sector peers ACHR (-56.9% 1Y), NHIC (+7.5% 1Y), and GS (+44.1% 1Y), QUMSU has underperformed the peer group average. Compare QUMSU vs ACHR →
QUMSU Historical Price Data · from 2025
Rows 1–50 of 186| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-29 | 10.33 | 10.33 | 10.33 | 10.33 | 303 | -1.62% |
| 2026-06-23 | 10.50 | 10.50 | 10.50 | 10.50 | 200 | +1.55% |
| 2026-06-22 | 10.33 | 10.34 | 10.33 | 10.34 | 100 | +0.10% |
| 2026-06-17 | 10.33 | 10.33 | 10.33 | 10.33 | 6 | -0.10% |
| 2026-06-12 | 10.34 | 10.34 | 10.34 | 10.34 | 100 | 0.00% |
| 2026-06-11 | 10.50 | 10.50 | 10.34 | 10.34 | 3K | +0.10% |
| 2026-06-10 | 10.99 | 10.99 | 10.33 | 10.33 | 200 | 0.00% |
| 2026-06-08 | 10.33 | 10.33 | 10.33 | 10.33 | 103 | -6.01% |
| 2026-06-05 | 10.99 | 10.99 | 10.99 | 10.99 | 2 | +6.08% |
| 2026-06-04 | 10.36 | 10.36 | 10.36 | 10.36 | 1 | -3.47% |
| 2026-06-03 | 10.73 | 10.73 | 10.73 | 10.73 | 15 | +0.31% |
| 2026-06-02 | 10.37 | 10.70 | 10.33 | 10.70 | 1 | +3.57% |
| 2026-06-01 | 10.33 | 10.33 | 10.33 | 10.33 | 20 | -4.35% |
| 2026-05-29 | 10.33 | 10.80 | 10.33 | 10.80 | 2 | +4.45% |
| 2026-05-22 | 10.34 | 10.34 | 10.34 | 10.34 | 2K | -0.10% |
| 2026-05-15 | 10.35 | 10.35 | 10.35 | 10.35 | 1K | 0.00% |
| 2026-05-11 | 10.34 | 10.35 | 10.34 | 10.35 | 1K | -4.17% |
| 2026-05-08 | 10.10 | 10.80 | 10.10 | 10.80 | 1 | +6.82% |
| 2026-04-21 | 10.11 | 10.11 | 10.11 | 10.11 | 4 | +0.10% |
| 2026-04-20 | 10.10 | 10.10 | 10.10 | 10.10 | 1 | -2.42% |
| 2026-04-17 | 10.35 | 10.35 | 10.35 | 10.35 | 200 | -3.72% |
| 2026-04-16 | 11.39 | 11.39 | 10.36 | 10.75 | 4 | +3.86% |
| 2026-04-13 | 10.35 | 10.35 | 10.35 | 10.35 | 220 | +1.27% |
| 2026-04-09 | 10.22 | 10.22 | 10.22 | 10.22 | 22 | +0.49% |
| 2026-04-08 | 10.17 | 10.17 | 10.17 | 10.17 | 22 | -0.25% |
| 2026-04-07 | 10.20 | 10.20 | 10.20 | 10.20 | 22 | -9.05% |
| 2026-04-06 | 11.21 | 11.21 | 11.21 | 11.21 | 22 | +8.62% |
| 2026-04-02 | 10.32 | 10.32 | 10.32 | 10.32 | 2 | +1.38% |
| 2026-04-01 | 10.18 | 10.18 | 10.18 | 10.18 | 2 | +0.69% |
| 2026-03-31 | 10.11 | 10.11 | 10.11 | 10.11 | 2 | -0.39% |
| 2026-03-30 | 10.15 | 10.15 | 10.15 | 10.15 | 2 | +0.10% |
| 2026-03-27 | 10.14 | 10.14 | 10.14 | 10.14 | 2 | -1.07% |
| 2026-03-26 | 10.25 | 10.25 | 10.25 | 10.25 | 2 | +0.69% |
| 2026-03-25 | 10.18 | 10.18 | 10.18 | 10.18 | 2 | 0.00% |
| 2026-03-24 | 10.18 | 10.18 | 10.18 | 10.18 | 2 | 0.00% |
| 2026-03-23 | 10.18 | 10.18 | 10.18 | 10.18 | 2 | -7.79% |
| 2026-03-20 | 11.04 | 11.04 | 11.04 | 11.04 | 2 | +8.55% |
| 2026-03-19 | 10.17 | 10.17 | 10.17 | 10.17 | 2 | -1.45% |
| 2026-03-16 | 10.32 | 10.32 | 10.32 | 10.32 | 101 | -2.92% |
| 2026-03-13 | 10.63 | 10.63 | 10.63 | 10.63 | 101 | +5.25% |
| 2026-03-12 | 10.62 | 10.62 | 10.10 | 10.10 | 101 | -0.10% |
| 2026-03-11 | 10.11 | 10.11 | 10.11 | 10.11 | 101 | -0.20% |
| 2026-03-10 | 10.13 | 10.13 | 10.13 | 10.13 | 101 | +0.30% |
| 2026-03-09 | 10.10 | 10.10 | 10.10 | 10.10 | 101 | -1.37% |
| 2026-03-02 | 10.24 | 10.24 | 10.24 | 10.24 | 2K | 0.00% |
| 2026-02-27 | 10.24 | 10.24 | 10.24 | 10.24 | 0 | 0.00% |
| 2026-02-26 | 10.24 | 10.24 | 10.24 | 10.24 | 0 | 0.00% |
| 2026-02-25 | 10.24 | 10.24 | 10.24 | 10.24 | 0 | 0.00% |
| 2026-02-24 | 10.24 | 10.24 | 10.24 | 10.24 | 0 | 0.00% |
| 2026-02-23 | 10.24 | 10.24 | 10.24 | 10.24 | 2K | 0.00% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
QUMSU — Frequently Asked Questions
Quick answers to the most common questions about buying QUMSU stock.
How has QUMSU stock performed recently?
QUMSU returned +3.1% over the past year, beating its 5-year annualized CAGR of +0.6%. The stock trades near its 200-day moving average, confirming the uptrend.
What is QUMSU's all-time high price?
Quantumsphere Acquisition Corp. Units reached $11.39 on 2026-04-16. The 52-week high is $11.39. Current 1-year return of +3.1% places the stock closer to historical peaks.
Where can I download QUMSU historical price data?
This page provides QUMSU daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2025-2026, downloadable in CSV format.