Published Sep 24, 2026, 4:30 PM ET
Today's move, what drove it, and what the available information cannot explain.
Capitalisation weighted, so a move in the largest companies moves it more than a move in the smallest.
Every Nasdaq listing, weighted by capitalisation and heavy in technology.
Thirty names weighted by price rather than by capitalisation, so it can disagree with the S&P for arithmetic reasons alone.
Small capitalisation names. Read against the S&P, it is the size half of how broad a day was.
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.
The cap-weighted index outran the equal-weighted one, so the largest companies carried more of the session than their number.
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.
CNN's own index, stored at the close. Context for whether sentiment confirms the tape or contradicts it.
Expected thirty day volatility from S&P 500 options. Rising with the index is the contradiction worth seeing.
Reported Eli Lilly AI drug discovery partnership announced two days before the 16% rally.
News event dated 2026-09-22, Yahoo Finance: Twist Bioscience expands AI drug discovery with Eli Lilly partnership
Moved 16.1%, at or above the 3% floor for this strip
The evidence read for this company over the 7 days before the session was its own SEC filings, its stored corporate actions, the headline feed collected for its ticker and the clustered news events this system collects every two hours across every category. Rows naming this company were read inside that window and none of them was resolved to this session's move.
Moved 15.1%, at or above the 3% floor for this strip
Same-day report that Barry Diller's People Inc. rescinded its takeover offer, shares fell same session.
News event dated 2026-09-24, CNBC Top News: Barry Diller's People Inc. rescinds MGM Resorts takeover offer, shares drop 9%
Moved 11.0%, at or above the 3% floor for this strip
The evidence read for this company over the 7 days before the session was its own SEC filings, its stored corporate actions, the headline feed collected for its ticker and the clustered news events this system collects every two hours across every category. Rows naming this company were read inside that window and none of them was resolved to this session's move.
Moved 7.0%, at or above the 3% floor for this strip
The evidence read for this company over the 7 days before the session was its own SEC filings, its stored corporate actions, the headline feed collected for its ticker and the clustered news events this system collects every two hours across every category. None of them holds a row for this company inside that window.
Moved 6.8%, at or above the 3% floor for this strip
Report of a quantum computing breakthrough rally the day before the 5.7% gain.
News event dated 2026-09-23, CNBC Top News: IonQ Shares Rally on Quantum Computing Breakthrough
Moved 5.7%, at or above the 3% floor for this strip
Reported gains tied to Muse app momentum and a price target boost ahead of the 4.5% move.
News event dated 2026-09-23, Yahoo Finance: Meta Stock Gains on Muse App Momentum and Price Target Boost
Moved 4.5%, at or above the 3% floor for this strip
Built in code from the movers whose evidence did not resolve, so no written summary can shorten this list.
The S&P 500 was essentially flat at -0.02% while the Dow fell 0.31% and the Russell 2000 fell 0.11%, showing the headline index masked divergence among comparison indices.
Participation held at 3 of 8 tracked indices above their 50-day average, the same narrow reading as the prior session, even though comparison indices were mixed rather than uniformly down.
Sector performance spread widely, with Communication Services up 1.27% against Materials down 1.19% and Utilities down 0.98%, showing a split tone rather than a uniform move.
VIX rose 3.10% while Fear and Greed also rose 2.86%, two sentiment readings moving in directions that do not typically pair together on the same session.
One session, from the stored closes of the eleven sector ETFs. Each bar is scaled against the widest move of the day, so the shape is the spread and not an absolute size.