Insider Cluster (2 insiders) ·Filed Jul 21, 2026

ARX

Accelerant Holdings
NEUTRAL
Impact 4/10
Horizondays Processed2mo ago
Insider cluster: 2 insiders, $1.3M total
Actionable Insight • Neutral

The insider sales are small relative to market cap and involve co-founders who may be diversifying. The historical calibration on ARX suggests prior reports have been over-scored, so this cluster should not be read as a strong bearish signal. Monitor for any subsequent Form 4 filings or earnings pre-announcements that could provide context for the sales.

DirectionNeutral
Confidencemedium
Horizondays
Latest settled — T+20d
ARX ▲ +44.67% at T+20d
NEUTRAL call ✓ call won +44.67% · α vs SPY +42.11% · entry $13.52 → $19.56
Next anchor: T+60d in 11d
Latest observation: T+50 +59.30% FF3 residual α
Entry anchored
Jul 20, 03:59 PM ET
via exchange tick
T+1d
-0.44%
call -0.44% · α -0.33%
$13.46
settled 2mo ago
T+5d
+8.06%
call +8.06% · α +9.29%
$14.61
settled 2mo ago
T+20d
+44.67%
call +44.67% · α +42.11%
$19.56
settled 7w ago
T+60d
—
call — · α —
—
in 11d

Price Chart

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Executive Summary

Two co-founders (CEO and Chief Underwriting Officer) sold a combined ~$1.26M in open-market shares over a 3-day window. The CEO's sale at $14.30 and the CUO's larger sale at $12.71 represent the first insider sales in the cluster period. While the dollar amount is modest relative to the $3.0B market cap (~0.04%), the involvement of both co-founders selling in close succession is notable, though insider sales are generally weaker signals than buys per academic literature. The historical calibration on ARX shows poor T+20 performance for prior reports, suggesting caution against over-interpreting this cluster as bearish.

Key Financial Metrics

Direction
selling
Total Value
$1.3M
Insiders
2

Key Facts

  • CEO Jeffrey Radke sold 14,777 shares at $14.30 for $211K on 2026-07-17
  • Co-Founder/CUO Francis O'Neill sold 82,767 shares at $12.71 for $1.05M on 2026-07-15
  • Total cluster value of ~$1.26M represents ~0.04% of $3.0B market cap
  • Both sellers are co-founders (C-suite), but insider sales are weak directional signals per literature
  • Prior ARX reports have a 40% win rate at T+20 with avg -4.43% return, indicating the model has historically over-scored on this ticker

Financial Impact

~$1.26M in insider sales, ~0.04% of market cap — below the 0.1% materiality threshold for routine sales

insider ownershipfloat

Risk Factors

  • Insider sales by co-founders could signal reduced conviction ahead of earnings or operational headwinds
  • The CEO's second sale on 2026-07-20 (80K shares at $13.51) extends the selling pattern beyond this cluster window
  • Low confidence due to small sample size and weak historical signal from insider sales

Market Snapshot

Exchange
NYSE
Sector
Insurance Agents, Brokers & Service
Analyst Consensus
86% bullish (14 analysts)

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-ARX-1784595160269
21 reports for ARX
Performance horizon
80% Hit rate 8 of 10 directional calls best @ T+60▲ +43.47%Feb 27, 2026
Filters
Rows
Reports for ARX — sortable, filterable
TypeNow
Aug 14, 2026
7w ago
DEFA14A / 8-K
BULLISH ★ 7/10
$19.58 $19.83▲ +1.28%▲ +3.27%$19.73 (+0.77%)
Aug 14, 2026
7w ago
Insider Cluster
BEARISH ★ 6/10
$19.58 $19.83▼ −1.28%▼ −3.27%$19.73 (−0.77%)
Aug 13, 2026
7w ago
DEFA14A
BULLISH ★ 8/10
$19.51 $19.84▲ +1.69%▲ +3.44%$19.73 (+1.13%)
Aug 13, 2026
7w ago
8-K
BULLISH ★ 9/10
$19.51 $19.84▲ +1.69%▲ +3.44%$19.73 (+1.13%)
Aug 12, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$13.61 $19.84▲ +45.78%▲ +47.67%$19.73 (+44.97%)
Aug 5, 2026
8w ago
Insider Cluster
BEARISH ★ 5/10
$12.26 $19.70▼ −60.69%▼ −61.29%$19.73 (−60.93%)
Jul 29, 2026
9w ago
Insider Cluster
NEUTRAL ★ 4/10
$11.20 $19.69▲ +75.80%▲ +71.84%$19.73 (+76.16%)
Jul 29, 2026
9w ago
Insider Cluster
NEUTRAL ★ 2/10
$12.40 $19.67▲ +58.63%▲ +53.61%$19.73 (+59.11%)
Jul 28, 2026
9w ago
Insider Cluster
BEARISH ★ 4/10
$14.72 $19.67▼ −33.63%▼ −30.25%$19.73 (−34.04%)
Jul 24, 2026
10w ago
144
BEARISH ★ 5/10
$14.23 $19.59▼ −37.67%▼ −34.04%$19.73 (−38.65%)
Showing 10 of 21

US Market Status

Market Closed — Opens Mon (38h 39m)

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Report published Jul 21, 2026