Which stock to buy today for tomorrow

Important Note

No screen can tell you which stock will definitely go up tomorrow—short‑term moves are inherently uncertain. What these filters do is narrow down to U.S. stocks that statistically have a higher probability of rising the next day, with good liquidity and quality, which is the closest practical answer to your question.

Screening Filters

1. monthly_average_dollar_volume ≥ $3,000,000

   • Purpose: Ensure you’re looking at liquid stocks that you can enter and exit easily, even on a 1‑day trade.
   • Rationale:
     • High average dollar volume means lots of money changing hands daily.
     • This reduces bid‑ask spreads and slippage, which matter a lot for very short holding periods like “today for tomorrow.”
     • It also reduces the risk of price manipulation often seen in illiquid, micro‑cap names.

2. market_cap_category ∈ {large, mega}

   • Purpose: Focus on bigger, more established companies.
   • Rationale:
     • Large and mega caps tend to have more stable business models, better disclosure, and heavier institutional coverage.
     • Short‑term moves are still uncertain, but larger caps are less likely to have wild, random swings from single trades or rumors.
     • For an overnight trade, this helps reduce some “lottery ticket” risk compared to small‑caps.

3. moving_average_relationship: PriceAboveMA20

   • Purpose: Only include stocks in a short‑term uptrend.
   • Rationale:
     • Price above the 20‑day moving average is a classic technical sign of recent strength.
     • For a 1‑day horizon, you generally want momentum on your side rather than trying to catch falling knives.
     • This filter tilts you toward stocks where buyers have recently been in control, which may increase the odds of a continued positive move into tomorrow.

4. is_index_component ∈ {GSPC (S&P 500), NDX (Nasdaq‑100)}

   • Purpose: Limit the universe to major index components.
   • Rationale:
     • S&P 500 and Nasdaq‑100 members are among the largest, most followed U.S. companies.
     • They benefit from high liquidity, tight spreads, and heavy analyst and institutional attention.
     • These stocks are less prone to extreme, unexplained moves and typically respond more “cleanly” to market‑wide factors, which is useful on a 1‑day time frame.

5. list_exchange ∈ {XNYS, XNAS, XASE}

   • Purpose: Restrict to primary, regulated U.S. exchanges (NYSE, Nasdaq, NYSE American).
   • Rationale:
     • Directly addresses your “US stock” requirement.
     • Excludes OTC and foreign exchanges where liquidity, transparency, and regulation can be weaker.
     • For a one‑day trade, you want reliable execution and market structure, which these exchanges provide.

6. one_day_rise_prob ≥ 70%

   • Purpose: Screen for stocks with a statistically high modeled probability of rising tomorrow.
   • Rationale:
     • This filter uses a predictive model (typically based on historical price behavior, volatility, technical indicators, and possibly other factors) to estimate the chance of a positive next‑day move.
     • Requiring at least 70% means you’re only seeing candidates where the model suggests the odds are meaningfully tilted in your favor for tomorrow’s session.
     • This is the most direct response to your “buy today for tomorrow” focus—but it’s still probabilistic, not a guarantee.

Why Results Match Your Request

• Time frame alignment:
  The key filter is one_day_rise_prob ≥ 70%, explicitly targeting a higher likelihood of a positive move tomorrow, matching your overnight horizon.

• US stocks only:
  The list_exchange filter ensures all names are listed on major U.S. exchanges, satisfying the “US stock” part of the request.

• Tradable in the short term:
  High dollar volume, large/mega cap, and index membership make sure the stocks are liquid, widely followed, and relatively stable, which is critical for a 1‑day trade.

• Momentum on your side:
  PriceAboveMA20 biases the list toward stocks already in short‑term uptrends, giving you a better chance that strength continues into the next trading day.

Together, these filters don’t promise a winner for tomorrow, but they concentrate your choices in a subset of high‑quality, liquid U.S. stocks with both positive recent momentum and a statistically higher estimated probability of rising in the next session.