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Institutional Cluster

AVBP

ArriVent BioPharma, Inc.
NEUTRAL
Impact 3/10
Horizonweeks Processed4mo ago
Institutional cluster: 4 buyers, 0 sellers (bullish)
Actionable Insight • Neutral

The cluster is entirely passive/index-driven with zero active manager participation, indicating no fundamental catalyst or conviction thesis. The buying likely reflects AVBP's inclusion in or weighting adjustment within broad market indices. Monitor for any active manager 13F filings or insider transactions that could signal a genuine catalyst. The 95% analyst bullish consensus suggests the stock already has strong Street support — this passive accumulation adds no new information.

DirectionNeutral
Confidencemedium
Horizonweeks
Final — all horizons settled through T+60d ⚠ clustered
AVBP ▲ +2.48% at T+60d
NEUTRAL call +2.48% · α vs SPY -1.91% · entry $30.20 → $30.95
Entry = T+0 close
Jun 11, 2026
via day close
T+1d
+1.13%
call +1.13% · α +0.58%
$30.54
settled 5mo ago
T+5d
+3.84%
call +3.84% · α +3.41%
$31.36
settled 4mo ago
T+20d
+11.49%
call +11.49% · α +9.60%
$33.67
settled 4mo ago
T+60d
+2.48%
call +2.48% · α -1.91%
$30.95
settled 7w ago

Executive Summary

Four mega-passive institutional investors (Vanguard, State Street, Fidelity, Morgan Stanley) collectively added $31.1M to their AVBP positions during Q3 2025, with Fidelity alone increasing by $18.1M (+65.6%). No institutional sellers were detected in this cluster. The buying is entirely passive/index-driven, reflecting index rebalancing or market-cap weighting adjustments rather than an active fundamental thesis.

Key Financial Metrics

Direction
accumulating
Buy Value
$126.5M
Net Flow
$31.1M

Institutional Positions

Net institutional flow: $31.1M

▲ Buyers (4)

InstitutionActionChangePosition ValueValue Δ
VanguardADD+36.8%$37.4M$5.1M
State StreetADD+38.7%$19.0M$2.8M
FidelityADD+65.6%$62.9M$18.1M
Morgan StanleyDOUBLED+157.9%$7.2M$5.0M

Key Facts

  • 4 mega-passive institutions added $31.1M net to AVBP in Q3 2025
  • Fidelity led with a $18.1M increase (+65.6% shares to 3.41M)
  • Morgan Stanley doubled its position (+157.9% shares to 392.0K)
  • No institutional sellers were detected in this cluster
  • All buyers are mega-passive/index funds — no active managers or hedge funds participated

Financial Impact

4 passive institutions accumulated $31.1M in new AVBP positions during Q3 2025, with total holdings reaching $126.5M

institutional ownershipfloat

Risk Factors

  • 13F data is 45+ days stale; positions may have been unwound since quarter-end
  • Passive buying provides no fundamental signal — the cluster does not indicate a shared investment thesis
  • No active manager participation suggests the stock lacks a differentiated catalyst beyond index inclusion

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
95% bullish (19 analysts)

Investment Themes

Biotech & Drug Discovery

Documents Analyzed

This report is based on 1 institutional 13F filing from SEC EDGAR.

DocumentAccession Number
INST-CLUSTER Data (Synthetic)inst-cluster-AVBP-2025-Q3
15 reports for AVBP
Performance horizon
80% Hit rate @ T+5 4 of 5 directional calls Went positive at some point 5 of 6 best @ T+20▲ +10.31%Jun 11, 2026
Filters
Rows
Reports for AVBP — sortable, filterable
TypeNow
Oct 26, 2026
today
8-K
BULLISH ★ 6/10
$23.64awaiting T+5——
Oct 25, 2026
1d ago
Press Release
BULLISH ★ 5/10
$21.00awaiting T+5——
Oct 23, 2026
2d ago
Press Release
BULLISH ★ 7/10
$21.00awaiting T+5——
Oct 19, 2026
7d ago
8-K
BULLISH ★ 6/10
$17.94awaiting T+5——
Oct 13, 2026
12d ago
SC 13G
NEUTRAL ★ 3/10
$16.20 $19.12▲ +18.02%▲ +17.57%—
Oct 13, 2026
13d ago
8-K
NEUTRAL ★ 4/10
$16.09 $18.85▲ +17.15%▲ +18.31%—
Oct 8, 2026
17d ago
SC 13D/A
BEARISH ★ 5/10
$16.73 $16.66▲ +0.42%▼ −1.55%—
Oct 6, 2026
20d ago
8-K
BEARISH ★ 7/10
$15.09 $16.09▼ −6.63%▼ −6.77%—
Aug 12, 2026
10w ago
Press Release
BEARISH ★ 6/10
$30.00 $29.18▲ +2.73%▲ +0.77%—
Jun 11, 2026
19w ago
Institutional Cluster
BULLISH ★ 4/10
$30.54 $31.74▲ +3.93%▲ +3.26%—
Showing 10 of 15

US Market Status

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Report published Jun 11, 2026