DAILY FACT · JUNE 1, 2026

$9.59 Billion Overnight. 19 Symbols Above $100 Million.

By Sapinover Intelligence · June 1, 2026 · 3 min read

The overnight ATS tape printed $9.59 billion across BlueOcean ($8.05B), Bruce Markets ($1.29B), and Moon ATS ($251M) on Sunday night into Monday morning. It is the second-largest combined session we have recorded, behind only the February 2 metals blowout ($10.5B on BlueOcean alone). All three venues ranked the same top names in the same order: MU, NVDA, MSFT, INTC, SOXL.

// 01Institutional Depth by Tier

The raw session size is one number. What matters more for institutional readers is how many names printed at institutional thresholds. We filtered the tape at four levels and compared to trailing averages.

Tier	Jun 1	5d avg	30d avg	90d avg	vs 90d
$50K+	1,229	1,047	909	887	+39%
$1M+	374	315	266	246	+52%
$10M+	89	79	65	58	+52%
$100M+	19	11	9	8	+127%

The $100M+ tier is the standout: 19 symbols cleared $100 million overnight, more than double the 90-day average of 8. At the $10M+ level, 89 names cleared institutional size versus a 90-day average of 58 (+52%). The depth increase is consistent across every tier, which means the whole distribution shifted right, not just the mega-cap tail.

Bar charts showing daily symbol counts at $50K+, $1M+, $10M+, and $100M+ thresholds over the last 30 sessions, with 30-day and 90-day trailing average lines. June 1 (green-highlighted rightmost bar) exceeds both averages at every tier. — Symbol counts at four institutional thresholds, last 30 sessions. Green bar = June 1. Red dashed = 90-day avg. Green dashed = 30-day avg.

// 02Flow Clusters

Running k-means (k=5) on the session's log-notional and log-volume dimensions separates the tape into its natural structure.

Cluster	Symbols	Notional	Top names
Mega-flow core	90	$6.94B	MU, NVDA, SOXL, MSFT, INTC
Mid-cap active	181	$517M	GLW, ZS, BIL
Growth/tech ring	248	$462M	CRWD, ASML, GEV
Long tail (low vol)	397	$58M	MELI, FIX, MA
Long tail (wide)	313	$70M	SERV, S, DJT

90 names in the mega-flow core drove $6.94B, or 86% of the session's notional. The growth/tech ring (248 names, $462M) is where the new entrants from last week sit: CRM, ADBE, CRWD, and ASML all crossed into this cluster. The long tail of 710 names collectively contributed $128M. The structure is consistent with prior sessions but the mid-cap active layer (181 symbols, $517M) is thicker than usual, which supports the breadth narrative.

Scatter plot of overnight ATS symbols on log-notional (x-axis) vs log-volume (y-axis), colored by k-means cluster. The red mega-flow cluster sits in the upper-right, with progressive rings of mid-cap, growth, and long-tail names. — k-means (k=5) on log-notional x log-volume. Each dot is one symbol. Labels show the top 3 names per cluster.

// 03The Five-Session Trend

The post-Memorial-Day overnight tape is now five sessions deep. The pattern is not a spike. It is a re-leveling.

Date	3-Venue Total	$10M+ symbols	$100M+ symbols
May 26 (Tue)	$6.10B	90	12
May 27 (Wed)	$6.61B	68	10
May 28 (Thu)	$6.59B	80	10
May 29 (Fri)	$3.87B	66	7
Jun 1 (Mon)	$9.59B	89	19

Friday dipped to $3.87B (typical Friday compression). Monday came back at $9.59B with the deepest $100M+ count of the five sessions. The overnight tape doubled out of Memorial Day week and has not reverted.

Three venues. Same top names. Same order. BlueOcean, Bruce Markets, and Moon ATS independently ranked MU, NVDA, MSFT, and INTC in the same positions. When three separate tapes corroborate the same institutional flow on the same night, the signal is not venue-specific. It is market-wide.

Source: Sapinover 3-venue overnight ATS pipeline (BlueOcean, Bruce Markets, Moon ATS). Institutional filter: $50K minimum notional. Data as of June 1, 2026 pre-enrichment. Full methodology at /support.