NASDAQ:ACGLN

Arch Capital Group Stock Insider Trading

Financial Services > Insurance - Diversified

Buy ACGLN

*Your capital is at risk

$15.80

-0.1000 (-0.629%)

At Close: Jun 23, 2026

Arch Capital Group Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -73.66. In total, the insiders bought 2.15M and sold 1.76M ACGLN shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-73.66
● Buy	2.15M shares
● Sell	1.76M shares
62% Buy Activity Weak Negative Correlation
Sell Signal Medium Confidence Dec 12, 2025 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -73.66. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 10, 2026 Sell	Common Shares, $.0011 par value per share S-Sale	Papadopoulo Nicolas CEO	CEO / President	21 930 Value: $2.11M
Mar 10, 2026 Buy	Stock Option (Right to Buy) M-Exempt	Papadopoulo Nicolas CEO	CEO / President	21 930 Value: $414.5K
Mar 10, 2026 Buy	Common Shares, $.0011 par value per share M-Exempt	Gansberg David President, Arch Capital Group	CEO / President	10 770 Value: $203.6K
Mar 04, 2026 Sell	Common Shares, $.0011 par value per share G-Gift	Rajeh Maamoun President, Arch Capital Group	CEO / President	40 600 Value: $0
Mar 04, 2026 Buy	Common Shares, $.0011 par value per share G-Gift	Rajeh Maamoun President, Arch Capital Group	CEO / President	40 600 Value: $710.9K
Mar 04, 2026 Sell	Common Shares, $.0011 par value per share F-InKind	Gansberg David President, Arch Capital Group	CEO / President	12 519 Value: $1.23M
Mar 04, 2026 Sell	Common Shares, $.0011 par value per share F-InKind	Petrillo Louis T Officer Of Subsidiary	Officer	8 030 Value: $790.3K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Papadopoulo Nicolas CEO	CEO / President	76 243 Value: $7.66M
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Papadopoulo Nicolas CEO	CEO / President	21 318 Value: $374.1K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Gansberg David President, Arch Capital Group	CEO / President	24 475 Value: $2.46M
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Rajeh Maamoun President, Arch Capital Group	CEO / President	6 843 Value: $120.1K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Rajeh Maamoun President, Arch Capital Group	CEO / President	24 475 Value: $2.46M
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Todd Christine Chief Investment Officer	Officer	3 981 Value: $69.9K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Todd Christine Chief Investment Officer	Officer	14 238 Value: $1.43M
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Todd Christine Chief Investment Officer	Officer	6 305 Value: $633.5K
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Petrillo Louis T Officer Of Subsidiary	Officer	2 889 Value: $50.7K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Petrillo Louis T Officer Of Subsidiary	Officer	10 331 Value: $1.04M
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Morin Francois CFO And Treasurer	C-Suite Officer	5 329 Value: $93.5K
Mar 03, 2026 Buy	Stock Option (Right to Buy) A-Award	Morin Francois CFO And Treasurer	C-Suite Officer	19 061 Value: $1.92M
Mar 03, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Gansberg David President, Arch Capital Group	CEO / President	6 843 Value: $120.1K
Feb 27, 2026 Sell	Common Shares, $.0011 par value per share F-InKind	Petrillo Louis T Officer Of Subsidiary	Officer	312 Value: $31.2K
Feb 27, 2026 Sell	Common Shares, $.0011 par value per share F-InKind	Gansberg David President, Arch Capital Group	CEO / President	553 Value: $55.4K
Feb 24, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Papadopoulo Nicolas CEO	CEO / President	46 674 Value: $822.9K
Feb 24, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Rajeh Maamoun President, Arch Capital Group	CEO / President	28 546 Value: $503.3K
Feb 24, 2026 Buy	Common Shares, $.0011 par value per share A-Award	Todd Christine Chief Investment Officer	Officer	25 046 Value: $441.6K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks