Is QSI Worth Buying in 2026?

Quantum-Si Incorporated Class A Common Stock

STOCK MEASURING & CONTROLLING DEVICES, NEC Updated 2026-08-23

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: Bearish.

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Bearish

Positives: RSI 62 — healthy momentum range. Concerns: trading below the 200-day MA (long-term downtrend); below the 50-day MA (medium-term momentum negative); 50-day MA is falling (-7.67% over 10 days); weak 1-year return of -24.8%; 3-month momentum negative (-21.2%); rising volume on a downtrend (distribution, 1.21x avg). Currently 73.1% off its 52-week high. Score: -5/7.

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QSI is trading below its 200-day MA ($1.03) — a key warning sign the longer-term trend is under pressure. An RSI of 61.5 sits in the neutral zone — momentum is neither stretched nor exhausted. The 1-year return of -24.8% compares to +20.5% for SPY (trailed the market by 45.3%). The current 73.1% drawdown from the 52-week high reflects elevated risk for momentum-based strategies.

$10,000 invested 1 year ago → $7,523 today
vs. S&P 500 (SPY) — same period trailed market by 45.3%

1-Year Price Chart

Daily candles
MA-50 MA-200 Up Down

Signal Check

Above 200-day MA ($1.03)
Above 50-day MA ($0.84)
RSI(14) neutral zone (30–70) — currently 61.5
Positive return (-24.8%)
!Within 10% of period high (−73.1%)
Period Range $0.84
$0.69 $3.10
RSI (14) 61.5
0 · OversoldOverbought · 100

Key Metrics

Price$0.84
Period Return-24.8%
Period High$3.10
Period Low$0.69
Drawdown−73.1%
MA-50$0.84
MA-200$1.03
RSI (14)61.5
Avg Volume (30d)2.9M
vs. SPYtrailed by 45.3%
Return Rank#770 of 999

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