ARX — Accelerant Holdings
Price · 2025-07-24 → 2026-08-21
272 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2025-07-24.
Performance
Technicals
Measured signals that fired on ARX
| date | signal | measured base rate |
|---|---|---|
| 2026-08-14 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
| 2026-08-13 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-30 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-28 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
| 2026-07-27 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-05-18 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-13 | Hasley Nancy Director | Open-market sale 10b5-1 plan | 20.5K | 19.56 | 400.8K |
| 2026-08-11 | ONeill Francis James Co-Founder, Chief U/W Officer | Open-market sale 10b5-1 plan | 89.2K | 12.41 | 1.1M |
| 2026-08-10 | RADKE JEFFREY L Co-Founder, CEO | Open-market sale 10b5-1 plan | 80.0K | 12.09 | 967.1K |
| 2026-08-10 | ONeill Francis James Co-Founder, Chief U/W Officer | Open-market sale 10b5-1 plan | 63.6K | 12.07 | 767.7K |
| 2026-08-03 | RADKE JEFFREY L Co-Founder, CEO | Open-market sale 10b5-1 plan | 80.0K | 12.06 | 964.5K |
| 2026-07-28 | ONeill Francis James Co-Founder, Chief U/W Officer | Open-market sale 10b5-1 plan | 104.6K | 14.56 | 1.5M |
| 2026-07-27 | ONeill Francis James Co-Founder, Chief U/W Officer | Open-market sale 10b5-1 plan | 110.5K | 14.63 | 1.6M |
| 2026-07-27 | RADKE JEFFREY L Co-Founder, CEO | Open-market sale 10b5-1 plan | 80.0K | 14.63 | 1.2M |
| 2026-07-27 | Sternberg Matthew David COO, Risk Exchange | Open-market sale 10b5-1 plan | 17.6K | 14.64 | 257.2K |
| 2026-07-27 | RADKE JEFFREY L Co-Founder, CEO | Open-market sale 10b5-1 plan | 15.2K | 14.45 | 220.0K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| SECURITY BENEFIT LIFE INSURANCE CO /KS/ | 78.4M | 5.9M |
| Capital World Investors | 68.8M | 5.2M |
| Keenan Capital, LLC | 53.3M | 4.0M |
| GILDER GAGNON HOWE & CO LLC | 50.0M | 3.7M |
| BARINGS LLC | 46.1M | 3.1M |
| ALLIANCEBERNSTEIN L.P. | 45.8M | 2.8M |
| AMERICAN CENTURY COMPANIES INC | 42.6M | 3.2M |
| MARSHALL WACE, LLP | 30.4M | 2.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 28.2M | 2.1M |
| JPMORGAN CHASE & CO | 26.9M | 2.0M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-14 | 2026-08-13 | on EDGAR ↗ |
| DEFA14A | 2026-08-14 | — | on EDGAR ↗ |
| 8-K | 2026-08-14 | 2026-08-13 | on EDGAR ↗ |
| DEFA14A | 2026-08-14 | — | on EDGAR ↗ |
| DEFA14A | 2026-08-13 | — | on EDGAR ↗ |
| 144 | 2026-08-13 | — | on EDGAR ↗ |
| 10-Q | 2026-08-13 | 2026-06-30 | on EDGAR ↗ |
| DEFA14A | 2026-08-13 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- This Cisco Analyst Is No Longer Bullish; Here Are Top 5 Downgrades For Friday · 2026-08-14 · benzinga
- Accelerant Holdings (ARX) filed form 8-K · 2026-08-14 · SEC EDGAR
- Stock Market Today, Aug. 13: Accelerant Holdings Surges 43% on All-Cash Buyout Offer · 2026-08-13
- Accelerant Holdings Non-GAAP EPS of $0.32, revenue of $356.9M · 2026-08-13
- Why is Accelerant Holdings stock surging today? · 2026-08-13
- Gold Down 2%; Cisco Shares Tumble After Q4 Results · 2026-08-13 · benzinga
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