Louis T. Petrillo is Officer of Subsidiary at ARCH CAPITAL GROUP LTD. (ACGL). They have made 24 open-market trades across 1 company since 2006, most recently 2026-03-04.
CIK 0001227095
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 24 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ACGL | 159,520 | $16.2M |
Shares reported on the most recent Form 4, priced at the 2026-03-05 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ACGL | SELL | 2025-05-09 | 2025-05-12 | $94.53 | $3.1M | -2.6% | -5.3% | -4.8% |
| ACGL | SELL | 2025-03-04 | 2025-03-06 | $91.77 | $1.9M | +2.6% | -6.5% | +4.2% |
| ACGL | SELL | 2023-05-10 | 2023-05-10 | $76.79 | $2.4M | -4.5% | -7.2% | -0.8% |
| ACGL | SELL | 2022-08-11 | 2022-08-15 | $46.10 | $2.2M | +0.8% | +0.3% | +20.2% |
| ACGL | SELL | 2021-11-18 | 2021-11-18 | $42.00 | $528K | -2.4% | +1.7% | +14.2% |
| ACGL | SELL | 2021-05-20 | 2021-05-20 | $40.21 | $2.4M | -2.6% | -6.4% | +2.9% |
| ACGL | SELL | 2019-11-19 | 2019-11-20 | $41.63 | $1.1M | -1.5% | +3.5% | +16.2% |
| ACGL | SELL | 2019-05-15 | 2019-05-17 | $34.39 | $1.4M | +1.7% | +5.4% | +15.5% |
| ACGL | SELL | 2018-09-14 | 2018-09-17 | $30.43 | $583K | -2.2% | -7.3% | -12.8% |
| ACGL | SELL | 2017-12-13 | 2017-12-14 | $91.07 | $539K | +0.9% | +1.9% | -5.9% |
| ACGL | SELL | 2017-05-24 | 2017-05-25 | $94.98 | $568K | +0.0% | -2.2% | +2.1% |
| ACGL | SELL | 2016-08-23 | 2016-08-24 | $79.29 | $338K | +4.7% | +1.5% | +2.4% |
| ACGL | SELL | 2016-08-22 | 2016-08-24 | $79.42 | $1.4M | +4.7% | +1.5% | +2.4% |
| ACGL | SELL | 2016-08-22 | 2016-08-24 | $79.55 | $348K | +4.7% | +1.5% | +2.4% |
| ACGL | SELL | 2015-11-23 | 2015-11-24 | $73.86 | $336K | -2.8% | +0.0% | -0.1% |
| ACGL | SELL | 2015-08-06 | 2015-08-07 | $71.90 | $334K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2015-07-31 | 2015-08-04 | $71.65 | $365K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2014-11-10 | 2014-11-12 | $57.18 | $2.4M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2014-03-03 | 2014-03-04 | $55.55 | $4.0M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2011-11-11 | 2011-11-14 | $36.45 | $510K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2010-11-05 | 2010-11-09 | $89.51 | $448K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2009-11-12 | 2009-11-16 | $70.03 | $4.2M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2006-03-13 | 2006-03-15 | $55.68 | $1.4M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2006-03-08 | 2006-03-10 | $55.67 | $100K | -2.8% | +0.0% | +0.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.