United States
S&P 500 · 336 advancers / 165 decliners / 2 unchanged · sector moves via SPDR ETFs
Global closebook
Levels retain their actual observation or session date; mixed-date data are not presented as one synchronized snapshot.
THU OCT 8 / FRI OCT 9
Overnight / pre-market watch · Fri Oct 9 · not part of Thu rankings
Friday indications
- Humana (HUM) +14.18% pre-market (~$442) on CMS 2027 star ratings; Thu regular session $387.12, −2.37%.
- T / TMUS / VZ −6.6% to −7% after-hours on SpaceX's 800 MHz spectrum deal and Starlink Mobile carrier push.
- Tower REITs SBAC / CCI / AMT spiked pre-market on the same news.
- Coherent (COHR) +3.19% pre-market Fri after Lumentum's CEO said optical parts were “completely sold out” through early 2029.
Ten developments that matter
Ordered by market importance, with dates and source trails preserved.
FRI OCT 9 · ~5:20AM ET
True top ten most-moved
Regular-session rankings for Thu Oct 8. Five-session sparklines use closes from Oct 2, 5, 6, 7 and 8.
THU OCT 8 CLOSE
United States · top ten
S&P 500 + NASDAQ 100 · ≥$10M 50D AVG $ VOLUMECompanyPrice1 day5 day + pathVol / 50dCatalyst
Thu Oct 8 regular session · 503 S&P 500 + 101 Nasdaq-100 constituents, deduplicated and ranked by absolute one-day move. All ten passed the liquidity filter.
Canada · top ten
S&P/TSX COMPOSITE · ≥C$2M 50D AVG $ VOLUMECompanyPrice1 day5 day + pathVol / 50dCatalyst
Thu Oct 8 regular session · S&P/TSX Composite constituents; 214 names with data after the C$2M liquidity filter.
Sector breadth
Direction beneath the headline indices, frozen at the Thu Oct 8 regular-session close.
THU OCT 8 CLOSE
Canada
134 advancers / 77 decliners / 3 unchanged · 214 filtered TSX Composite constituents with data · equal-weight sector averages
Top-movers heat maps
Top 50 by absolute one-day move at Thu Oct 8 close. Tile area follows market cap; color intensity follows Oct. 8 volume versus the 50-day average.
THU OCT 8 CLOSE · 50 + 50
Volume / 50-day average<1.0× muted1.0–1.5× moderate>1.5× strongunavailable / neutral
United States · top 50
S&P 500 + Nasdaq 100. Volume ratios are available for ranks 1–10; ranks 11–50 are neutral. Sector fields were not supplied for ranks 11–50 and are grouped transparently below.
Canada · top 50
S&P/TSX Composite filtered universe. Every tile uses the supplied market cap, volume ratio and sector.
What the data says
Read-throughs anchored only to the dated figures above.
THU CLOSE / FRI INDICATIONS
The selloff was narrow, not indiscriminate
The S&P 500 fell 0.47% even as 336 members advanced against 165 decliners. Technology lost 1.79% while Energy gained 2.97% and Consumer Staples rose 2.11%, confirming a forceful rotation beneath a modest index decline.
The U.S. mover table concentrates the damage in optical, semiconductor and AI-infrastructure names. Friday's +3.19% pre-market indication for COHR is context after Thursday's −9.63% regular-session loss, not a revision to the ranking.
Source & session notes
Coverage limits and calculation details for this fixed morning edition.
PUBLIC SOURCES · FIXED SNAPSHOT
Reporting access
- Public sources only; no subscriber sign-in attempted in the worker context.
- WSJ, Barron's and Bloomberg homepages were not fetchable from this context. Developments use Reuters wires, Bloomberg-via-Moneyweb, FT-via-syndication, CNBC and calendar sources; no paywalled text was used. economist.com was untouched.
United States
- Movers and breadth: stockanalysis.com public data.
- 503 S&P 500 + 101 Nasdaq-100 constituents ranked by regular-session absolute one-day percentage move. The $10M 50-day average daily dollar-volume filter was verified; smallest passer was CSGP at $196M.
Canada & rates
- Yahoo Finance daily OHLCV via the workspace's tsx100 environment; 220 Wikipedia S&P/TSX Composite constituents (snapshot 2026-04-20, ~6 months stale), 214 with data after the C$2M filter. No Yahoo data for ARX (delisted), BLX, SES, OLA and IIP.UN.
- Yields are late-session quotes, not official par closes; 5Y is unavailable. Gold levels are derived from currency-page conversions and labeled derived.