signals / MFI cross 20

MFI cross 20 is a long-side study. Fires when the Money Flow Index crosses above 20.

Quiet day for this theme

Today is quiet for MFI cross 20 — no study-grade (n≥10) firings among 30 mega-cap names in the last 5 daily bars. That is today's scan result, not a forecast, and not a LONG/SHORT call. Historical context and other themes that did fire are below — not invented firings for this theme.

Historical context on tracked names

Same rank engine as /t/spy. These are HIST hit rates on the tracked sample, not today's firings. Study-grade rows (n≥10) first; n<10 anecdotes are folded below.

No study-grade (n≥10) HIST rows on the tracked sample. Thin samples (n<10) are folded below — they are not headline hit rates.

Anecdotes (n<10) — not headline hit rates

These rows have fewer than 10 measurable 1-month firings. A 100% win on n=1 is not a claim.

SymbolRuleLast dateWin / n
TSLAMFI cross 20LONGSTUDY2026-10-122026-10-12Win 100.0% · n=2
SPXMFI cross 20LONGSTUDY2026-10-122026-10-12Win 100.0% · n=1
QQQMFI cross 20LONGSTUDY2026-10-122026-10-12Win 66.7% · n=3
SPYMFI cross 20LONGSTUDY2026-10-122026-10-12Win 50.0% · n=2
NVDAMFI cross 20LONGSTUDY2026-10-122026-10-12Win 100.0% · n=3
IWMMFI cross 20LONGSTUDY2026-10-122026-10-12Win 60.0% · n=5
MSFTMFI cross 20LONGSTUDY2026-10-122026-10-12Win 80.0% · n=5
AAPLMFI cross 20LONGSTUDY2026-10-122026-10-12Win 100.0% · n=2

Themes firing today — Golden cross · MACD bullish · RSI overbought · Death cross.

Rules firing today — EMA 9/21 golden cross · Williams %R cross -80 · CCI cross 100 · CCI cross -100.

Also study — SPY technicals · Most mega-caps closed above SMA200 as of 2026-10-12. · full firing scan.

FAQ

What is MFI cross 20?

MFI cross 20 is a long-side study. Fires when the Money Flow Index crosses above 20.

Which names are firing it?

No study-grade (n≥10) mega-cap firings in the last 5 daily bars. Thin samples (n<10): JPM, HD, HD, NFLX, PEP.

What is the sample?

Hit rates use the same rank engine as /t/spy on a fixed sample (SPY, SPX, QQQ, IWM, AAPL, MSFT, NVDA, TSLA). 8 of those names have a measurable history for this rule. Windows are 5 days, 1 month and 3 months on daily bars. Last bar in sample: 2026-10-12. Method: /methodology. Caveats: /help.

Why is today quiet for this study?

No study-grade (n≥10) mega-cap firings for MFI cross 20 in the last 5 daily bars. Historical context on tracked names and other rules that did fire are in the quiet-day study pack — not invented firings. See SPY technicals, /breadth, and /firing.

What does MFI cross 20 measure?

Fires when the 14-period Money Flow Index crosses above 20. Underlying math: see How it works on this page. Catalog line: Fires when the Money Flow Index crosses above 20.

What does a firing mean?

A firing is the daily bar where this rule’s condition becomes true (a cross or a flip). It is a study event, not a recommendation to buy or sell. Forward windows on this site are close-to-close with no costs. Study side is long-side (LONG). A positive forward return is a rise in the close after the print — a scoring convention, not a recommendation to buy. Method: /methodology.

Why can the sample be small?

Hit rates need enough dated prints with a completed forward window. A row with fewer than 10 firings is anecdote, not evidence — the same caveat as /help. Slow rules (especially 50/200 SMA crosses) often have single-digit counts on a two-year tape. We do not invent a hit rate when the count is missing. Names in this sample with a measurable history include SPX · AAPL · NVDA · TSLA.

How it works

Money Flow Index, period 14 — a volume-weighted RSI. Typical price is (high + low + close) / 3; raw money flow is typical price × volume. Positive and negative money-flow sums over 14 bars give the money-flow ratio. MFI = 100 − 100 / (1 + ratio).

Fires when the 14-period Money Flow Index crosses above 20.

Definition comes from the rank-rule catalog and the indicator defaults in this repo. Slug mfi-cross-20 is listed on /api/meta.

How to read it

Study side is long-side (labeled LONG on firing chips). A positive forward return on this page is a rise in the close after the print. That is how the event is scored — not a recommendation to buy. MFI adds volume to an RSI-like ratio. A cross of 20 or 80 is still just a threshold event; a volume spike can shove MFI through the line without a change in trend. If a name has thin volume in the tape, treat the print as noisier, not more informative.

Scoring on this site is shared across every rule (5-day / 1-month / 3-month close-to-close windows, side-adjusted). See How it is scored here below. Names in the tracked sample with a measurable history include SPX · AAPL · NVDA · TSLA. Those figures are the same rows as the hit-rate table below — not a second ranking. Historical hit rates, not a prediction / not trade advice.

When it fails

  • Needs a usable volume column; a one-bar volume spike can force a cross.
  • MFI can stay extreme in a persistent flow, same as RSI.
  • 20 / 80 are conventions shared with the screener zones, not an edge.
  • Past ≠ future. A historical hit rate is not a prediction and not investment advice.
  • No costs modeled. Forward returns are close-to-close with no commissions, slippage or borrow.
  • Small samples. A row with fewer than 10 firings is anecdote, not evidence.
  • Overlap bias. Clustered prints can credit the same later move more than once.

Same caveats as the rest of the site: /methodology · /help.

How it is scored here

On this site every rule is scored the same way: run it over about two years of daily bars, record each firing, and measure what the name did 5 days, 1 month and 3 months later. Sell signals are measured as shorts, so a positive return is a profitable short (side-adjusted). The composite score is 0.6 × average return + 0.4 × (win rate − 50), with longer horizons weighted more. Nothing here is a forecast.

Full catalog: /signals. Method: /methodology. Slug mfi-cross-20 is stable and listed on /api/meta.

Same family: MFI cross 80

Firing now (mega-caps, last 5 bars)

SymbolLast date Win 1moCount
JPM2026-10-06Win 100.0% · n=4STUDY100.0%n=44
HD2026-10-08Win 80.0% · n=5STUDY80.0%n=55
HD2026-10-06Win 80.0% · n=5STUDY80.0%n=55
NFLX2026-10-06Win 50.0% · n=6STUDY50.0%n=66
PEP2026-10-08Win 33.3% · n=6STUDY33.3%n=66

Hit rates on tracked names

Same rank engine as /t/spy, /t/nvda, and /t/spx, restricted to this rule.

Symbol Win 5d Win 1mo Win 3mo Count Last bar
TSLA100.0%100.0%n=2100.0%22026-10-12
SPX100.0%100.0%n=1100.0%12026-10-12
QQQ66.7%66.7%n=3100.0%32026-10-12
SPY100.0%50.0%n=2100.0%22026-10-12
NVDA66.7%100.0%n=366.7%32026-10-12
IWM60.0%60.0%n=5100.0%52026-10-12
MSFT80.0%80.0%n=560.0%52026-10-12
AAPL100.0%100.0%n=250.0%22026-10-12

Honest caveats

  • Past ≠ future. Everything here is a historical measurement on daily bars, not a prediction and not investment advice.
  • No costs modeled. Forward returns are close-to-close with no commissions, slippage or borrow.
  • Overlap bias. Signals that fire in clusters get credit for the same move more than once.
  • Small samples. A row with fewer than 10 firings is anecdote, not evidence.

Full method: help manual. Interactive chart: terminal.