Is QSI Worth Buying in 2026?

Quantum-Si Incorporated Class A Common Stock

STOCK MEASURING & CONTROLLING DEVICES, NEC Updated 2026-06-14

Here’s whether Quantum-Si Incorporated Class A Common Stock (QSI) is worth buying in 2026 — based on weekly-updated price trend, RSI momentum, and return vs. the S&P 500. Our current read: Caution.

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Caution

Positives: 50-day MA is rising (+5.92% over 10 days); RSI 43 — healthy momentum range. Concerns: trading below the 200-day MA (long-term downtrend); below the 50-day MA (medium-term momentum negative); weak 1-year return of -47.1%. Currently 69.5% off its 52-week high. Score: -2/7.

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QSI is trading below its 200-day MA ($1.24) — a key warning sign the longer-term trend is under pressure. An RSI of 42.6 sits in the neutral zone — momentum is neither stretched nor exhausted. The 1-year return of -47.1% compares to +22.9% for SPY (trailed the market by 70.0%). The current 69.5% drawdown from the 52-week high reflects elevated risk for momentum-based strategies.

$10,000 invested 1 year ago → $5,289 today
vs. S&P 500 (SPY) — same period trailed market by 70.0%

1-Year Price Chart

Daily candles
MA-50 MA-200 Up Down

Signal Check

Above 200-day MA ($1.24)
Above 50-day MA ($0.97)
RSI(14) neutral zone (30–70) — currently 42.6
Positive return (-47.1%)
!Within 10% of period high (−69.5%)
Period Range $0.95
$0.69 $3.10
RSI (14) 42.6
0 · OversoldOverbought · 100

Key Metrics

Price$0.95
Period Return-47.1%
Period High$3.10
Period Low$0.69
Drawdown−69.5%
MA-50$0.97
MA-200$1.24
RSI (14)42.6
Avg Volume (30d)6.5M
vs. SPYtrailed by 70.0%
Return Rank#1060 of 1246

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