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// SESSION RECAP

Last Night's Overnight Session

An auto-updating snapshot of overnight ATS activity across three major venues, notional, top names, leading themes, and the 30-session trend.

SAPINOVEROvernight ATS Intelligence01 / 07
Three-Venue Session Notional
$5.21B
September 21, 2026
119
Symbols
69
Names >$10M
1.22x
30-Sess Avg
3
Venues
Three major overnight ATS venues, consolidatedsapinover.com
SAPINOVER30-Session Trend02 / 07
Session Volume Trajectory
3-Venue ATS Notional (30 Sessions)Avg: $4.27B
+22%
vs 30-Sess Avg
Prior High
$15.66B: Jun 23
Memory & Semiconductors
48% of session notional
All three venues aggregated · trading-day sessionssapinover.com
SAPINOVERTop Names by Notional03 / 07
Session Leaderboard
Top 12 of 119
01SOXL
$482M3x
02SNDK
$419MSTK
03MU
$368MSTK
04INTC
$250MSTK
05QQQ
$171METF
06MSTR
$162MSTK
07NVDA
$133MSTK
08SOXS
$131METF
09AMD
$126MSTK
10SOXX
$107METF
11TQQQ
$105M3x
12SPCX
$83MSTK
Notional aggregated across all three venuessapinover.com
SAPINOVERTheme Spotlight04 / 07
Memory & Semiconductors
Dominant ecosystem of the session
$2.49B
48% OF SESSION
Anchor Position
SOXL
$482M
Largest single name · 3-venue total
Related Instruments
SNDK
$419M
SanDisk
MU
$368M
 
INTC
$250M
 
NVDA
$133M
 
SOXS
$131M
3x Semi Bear
AMD
$126M
 
Sister ETFs and single-stock instruments grouped by themesapinover.com
SAPINOVERK-Means Cluster Analysis05 / 07
Behavioral Segmentation
k=4 · 62 Names
Notional vs. Timing Differential (bps)
Memory Megaplay
SOXL, TQQQ, KORU
Large-Cap Core
SNDK, MU, INTC, QQQ, MSTR
Inverse / Hedge
CRCL, SNXX, ETHU, MUU, MSTU
Broad Tail
QLD
Features: log(notional), timing differential, leverage factorsapinover.com
SAPINOVERSector Breakdown06 / 07
Notional by Theme
$3.36B Represented
Sector concentration (names >$10M)
Technology
$1.57B
Leveraged Equity
$655M
Large-Cap Growth
$164M
Inverse / Hedge
$152M
Communication Svcs
$147M
Other
$666M
Asset Mix
42%
ETFs
58%
Stocks
Concentration
79%
Memory & Semiconductors in top-12 notional
Composition from consolidated tape · names >$10Msapinover.com
SAPINOVERSession Summary07 / 07
September 21, 2026
The overnight session printed $5.21B across three major ATS venues. The memory & semiconductors complex commanded 48% of total notional, anchored by SOXL at $482M.
Session Scorecard
$5.21B
Total Notional
119
Active Symbols
69
Names >$10M
$482M
Top Name (SOXL)
48%
Lead Theme
1.22x
30-Sess Avg
Overnight Intelligence Platform
sapinover.com
For informational purposes only. Not investment advice.Sapinover LLC

Auto-generated from the consolidated overnight tape after each session. Notional reflects three major overnight ATS venues in aggregate. Use the arrows or swipe to step through; tap Download PDF to save a carousel for sharing. For informational purposes only, not investment advice.