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Latest Market Anatomy

Market Anatomy, Tuesday, October 27, 2026

Published Oct 27, 2026, 4:19 PM ET

Market Anatomy, Tuesday, October 27, 2026

On October 27, 2 of the 8 tracked indices were above their 50-day average. Jetblue Airways rose 19.0%, the biggest move with a cause on record.

Market Anatomy as drawn for the share card of Tuesday, October 27, 2026. The same picture is on its share card.

Today's standout, the names around it and how it sits against the market. Tap a name, a sector or an index to move.

Today's relationship

Jetblue Airways

Jetblue Airways made the largest move with a cause on record.

Jetblue Airways

JBLU · close 2.82

+18.99%1d
Jetblue Airways, stored closes
  • Jetblue Airways-48.1%

Stored daily closes.

Nearest connections

Stored cause

2026-10-26: JetBlue Posts Bigger Loss on Fuel Costs as CEO Says Margins Improving

Against the market

Jetblue Airways moved +18.99% on the session, 17.82 points ahead of the Russell 2000.

Outside the S&P 500 holdings file dated 2026-10-26.

Indices

Weights, ranks and sectors come from the stored holdings files: S&P 500 (dated 2026-10-26).

The day's board

Market participation

25%

2 of 8 tracked indices above their 50-day average

Counted over ^GSPC, ^IXIC, ^DJI, ^RUT, ^FTSE, ^N225, ^GDAXI, 000001.SS. This is a reading across whole market indices, not a count of the companies inside any one of them.

Today's movers

Sectors, one session

Each bar is scaled against the widest move of the day. Tap a sector to see its largest names.

Key takeaways

  1. 1

    The S&P 500 rose 0.60% while the equal weight fund rose 0.11%, a gap of 0.49 points. The index outpaced the average constituent, a wider gap than the 0.35 points last time.

  2. 2

    Only 2 of 8 tracked indices sit above their 50-day average, while the Nasdaq rose 1.18% and the Russell 2000 rose 1.16%. Participation stays thin against those gains, and the Dow's 0.03% lags both.

  3. 3

    Technology rose 1.70% while Energy fell 2.05%, a spread of 3.75 points. Staples, Real Estate, Communication Services and Financials also fell, so the gains were concentrated in fewer sectors.

  4. 4

    Boeing fell 10.69% with only items on a trial and an upcoming report, CoreWeave rose 7.94% and Accenture fell 4.88% with no stored evidence. None of the three moves is explained by stored evidence.

The full day: index block, sentiment, every mover and the open questions
7,722.60 +0.60%1d

Capitalisation weighted, so a move in the largest companies moves it more than a move in the smallest.

the last 40 stored closes, scaled to their own range
26,477.81 +1.18%1d

Every Nasdaq listing, weighted by capitalisation and heavy in technology.

52,377.57 +0.03%1d

Thirty names weighted by price rather than by capitalisation, so it can disagree with the S&P for arithmetic reasons alone.

2,818.87 +1.16%1d

Small capitalisation names. Read against the S&P, it is the size half of how broad a day was.

217.52 +0.11%1d

The same five hundred companies weighted equally, so the largest names count no more than the smallest. Read against the cap-weighted index, the gap is how much of the day belonged to the biggest companies.

Cap weight against equal weight+0.49pp

The cap-weighted index outran the equal-weighted one, so the largest companies carried more of the session than their number.

Sentiment

Sentiment composite
34 +8.79%1d

This system's own composite of up to seven stored inputs, 0 (extreme fear) to 100 (extreme greed), computed after each close; not CNN's index (work item #699). Context for whether sentiment confirms the tape or contradicts it.

17.52 -4.73%1d

Expected thirty day volatility from S&P 500 options. Rising with the index is the contradiction worth seeing.

Open questions

  • What is driving Twist Bioscience?+10.05%
    Read for this move: the stored stories naming Twist Bioscience, its filings and corporate actions, over the 7 days to 2026-10-27.
  • What is driving Vicor?+8.85%
    Read for this move: the stored stories naming Vicor, its filings and corporate actions, over the 7 days to 2026-10-27.
  • What is driving Coreweave?+7.94%
    Read for this move: the stored stories naming Coreweave, its filings and corporate actions, over the 7 days to 2026-10-27.
  • What is driving Iren?+7.90%
    Read for this move: the stored stories naming Iren, its filings and corporate actions, over the 7 days to 2026-10-27.
  • What is driving Dell Technologies?+7.47%
    Read for this move: the stored stories naming Dell Technologies, its filings and corporate actions, over the 7 days to 2026-10-27.

Built in code from the movers whose evidence did not resolve, so no written summary can shorten this list.

Today's key movers

+10.05%
TWST 159.85
3rd of 7 on the strip

Read for this move: the stored stories naming Twist Bioscience, its filings and corporate actions, over the 7 days to 2026-10-27.

Moved 10.1%, at or above the 3% floor for this strip

+8.85%
VICR 212
4th of 7 on the strip

Read for this move: the stored stories naming Vicor, its filings and corporate actions, over the 7 days to 2026-10-27.

Moved 8.8%, at or above the 3% floor for this strip

+7.94%
CRWV 59.57
5th of 7 on the strip

Read for this move: the stored stories naming Coreweave, its filings and corporate actions, over the 7 days to 2026-10-27.

Moved 7.9%, at or above the 3% floor for this strip

+7.90%
IREN 27.44
6th of 7 on the strip

Read for this move: the stored stories naming Iren, its filings and corporate actions, over the 7 days to 2026-10-27.

Moved 7.9%, at or above the 3% floor for this strip

+7.47%
DELL 501.96
5.8 pts ahead of XLK

Read for this move: the stored stories naming Dell Technologies, its filings and corporate actions, over the 7 days to 2026-10-27.

Moved 7.5%, at or above the 3% floor for this strip