Why quantum stocks are down today

Screening Filters

1. Market Cap ≥ $500M ('market_cap': {'min': '500000000'})

   • Purpose: Focus on established, more liquid quantum/tech names rather than tiny micro‑caps.
   • Rationale: When asking “Why are quantum stocks down today?”, you typically care about the reasonably well-known companies driving the sector, not very small, thinly traded stocks whose moves can be random or idiosyncratic. A $500M+ cutoff helps isolate stocks where price moves are more likely tied to sector- or macro-level factors and news that would explain “why” they’re down.

2. Relative Volume ≥ 1.2 ('relative_vol': {'min': '1.2'})

   • Purpose: Capture stocks trading with at least 20% higher volume than usual.
   • Rationale: To understand why something is moving today, you want names where there is unusual activity. Elevated volume suggests that the price decline is being actively driven by new information (e.g., news, sentiment shift, analyst actions) rather than normal day-to-day noise. It helps highlight stocks where today’s drop is meaningful.

3. Price Change ≤ -2% ('price_change_pct': {'max': '-2'})

   • Purpose: Restrict the list to stocks that are clearly down on the day.
   • Rationale: Your question is explicitly about stocks that are “down today.” A threshold of -2% ensures the screener doesn’t pick up names that are flat or only slightly negative; it targets those experiencing a noticeable decline that’s worth explaining.

4. Theme: Technology ('themes': ['Technology'] )

   • Purpose: Narrow the universe to technology-sector stocks, which is where listed quantum computing and quantum-related plays usually reside.
   • Rationale: “Quantum stocks” are generally categorized under Technology (often subthemes like Semiconductors, Computing, AI, or specialized Quantum Computing). This filter aligns the search universe with the sector where quantum-related companies most commonly trade, increasing the chance that the results are truly “quantum” or closely adjacent.

5. News Driver: Negative ('news_driver': ['Negative'] )

   • Purpose: Surface stocks whose current downward moves are linked to negative news or sentiment.
   • Rationale: You’re asking “why” they’re down. A news‑driver filter that flags negative news events (e.g., downgrades, weak earnings, regulatory issues, sector‑wide concerns, or bearish research on quantum technology) isolates stocks whose drop is being explained by identifiable negative catalysts rather than random price fluctuations.

Why Results Match Your Question

• The Technology theme aligns with where most investable “quantum” plays live, so the list is relevant to “quantum stocks.”
• The price change ≤ -2% ensures we’re only looking at stocks meaningfully “down today,” matching the time frame and direction of your question.
• The relative volume ≥ 1.2 and negative news driver filters help answer the “why” by focusing on stocks whose declines are tied to fresh, heavier-than-normal trading and identifiable negative news or sentiment—exactly the kind of context needed to explain today’s drop.
• The market cap ≥ $500M filter concentrates on more established, liquid companies where sector‑level or macro drivers matter and are easier to interpret, giving you more reliable insight into why “quantum stocks” as a group might be weak today.