ACGL Congressional Stock Trades & Insider Buying (2026)

ACGL insider buying and selling over the past year

Insiders at ARCH CAPITAL GROUP LTD. only sold stock in the open market over the past year: 6 Form 4 sales totaling $28.02M, against no open-market purchases.

None of the 6 sales were flagged as Rule 10b5-1 plan trades, meaning each one was a discretionary decision at the time of filing. Activity clustered in 2026-03 (3 trades) and 2025-11 (1 trades); the latest filing in this window is dated 2026-03-11. The average open-market sale price was $93.73; the last close of $101.27 is 8.0% above that level, so sellers left upside on the table. The single largest trade was a sale of 212,666 shares worth $19.97M on 2025-12-15. Since the most recent filing the stock has moved +6.8%, from $94.81.

Where ACGL trades relative to its one-year range

ARCH CAPITAL GROUP LTD. closed at $101.27 on 2026-10-16, inside a one-year range of $84.72 to $106.48. That puts the stock in the middle of its range, at 76.1% of the distance from low to high. Over one year the share price moved +17.4%, and over roughly three months -0.1%. Average daily volume over the last month was about 3,585,595 shares.

Across 57 companies in the same SEC industry group (SIC 63) with a full year of prices in Gemral Edge, the median one-year return was +10.0%. ACGL is ahead of that median and beat 68% of that peer group on this measure.

Members of Congress who traded ACGL

STOCK Act disclosures show 21 trades in ACGL by 4 members of Congress over five years (10 purchases, 11 sales), most recently on 2026-09-04. The most active traders were Ro Khanna (D-CA), 17 trades; Jefferson Shreve (R-IN), 2 trades; Alan Armstrong (R-OK), 1 trade; Robert P. Bresnahan, Jr. (R-PA), 1 trade.

By party the trades split 17 by Democrats, 4 by Republicans; by chamber, 20 from the House, 1 from the Senate.

Compare ACGL with indexed peers from the same industry group

These peers have full Gemral Edge dossiers and the closest one-year price move to ACGL:

• PRU one-year return +16.1%
• UNH one-year return +12.5%
• ELV one-year return +23.0%
• MOH one-year return +10.0%
• BRK-B one-year return +8.8%

Sources and method

Every figure above is computed from public filings stored in Gemral Edge, not estimated. Insider figures count only open-market purchases and sales reported on SEC Form 4; option exercises, grants and gifts are excluded because they do not reflect a decision to buy or sell at market prices.

• SEC EDGAR Form 4 (edge_insider_trades, codes P/S open-market only) — as of 2026-03-11
• edge_prices_eod (end-of-day close) — as of 2026-10-16
• House PTR / Senate eFD disclosures (edge_congress_trades) — as of 2026-09-04

ACGL data questions

Are ACGL insiders buying or selling stock?

Insiders at ARCH CAPITAL GROUP LTD. only sold stock in the open market over the past year: 6 Form 4 sales totaling $28.02M, against no open-market purchases.

What is the one-year price range for ACGL?

Based on end-of-day closes through 2026-10-16, ACGL traded between $84.72 and $106.48, last closing at $101.27.

Has any member of Congress traded ACGL stock?

Yes. 4 members disclosed 21 trades in ACGL over five years; the most recent disclosed trade date is 2026-09-04.